Cisco Systems: 
						
						=======================================
						: %PM-4-LIMITS: -  
						=======================================
						alexander () [29 Dec 2004 15:52:10]
						
						  . 

 sh logging      

Dec 29 11:01:52: %PM-4-LIMITS: Virtual port count for module 0 exceeded the recommended limit of 1200 

       ,    duplicate  retransmit packet.   ,   (  ).      -     .      . 

            down... 

sh ver 
Cisco Internetwork Operating System Software 
IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(11)EA1a, RELEASE SOFTWARE (fc1) 
Copyright (c) 1986-2002 by cisco Systems, Inc. 
Compiled Thu 17-Oct-02 23:49 by antonino 
Image text-base: 0x80010000, data-base: 0x80528000 

ROM: Bootstrap program is CALHOUN boot loader 

c2950 uptime is 6 weeks, 6 days, 23 hours, 35 minutes 
System returned to ROM by power-on 
System restarted at 16:16:52 Msc Wed Nov 10 2004 
System image file is "flash:/c2950-i6q4l2-mz.121-11.EA1a.bin" 

cisco WS-C2950T-24 (RC32300) processor (revision G0) with 20401K bytes of memory. 
Processor board ID FHK0645X1D0 
Last reset from system-reset 
Running Enhanced Image 
24 FastEthernet/IEEE 802.3 interface(s) 
2 Gigabit Ethernet/IEEE 802.3 interface(s) 

32K bytes of flash-simulated non-volatile configuration memory. 
Base ethernet MAC Address: 00:0B:5F:30:F9:40 
Motherboard assembly number: 73-6114-08 
Power supply part number: 34-0965-01 
Motherboard serial number: FOC064500M6 
Power supply serial number: PHI06380F14 
Model revision number: G0 
Motherboard revision number: A0 
Model number: WS-C2950T-24 
System serial number: FHK0645X1D0 
Configuration register is 0xF 



						
						=======================================
						: native vlan
						=======================================
						DmVash (dmvash@rdu.penza.ru) [28 Dec 2004 17:33:31]
						
						 
  3750  3COM 4400   dot1q
   vlan 10, 40. vlan 10 - .
3Com      default vlan 1  .

   :
interface GigabitEthernet1/0/4
 description Trunk 3Com
 switchport trunk encapsulation dot1q
 switchport trunk native vlan 10
 switchport mode trunk
 switchport nonegotiate
 no ip address
 no mdix auto

   3com   10, 40   1

   3com   vlan 10;    10-    -   (     10) -     ,  ?     ?
								---------------------------------------
								Re: native vlan
								Vasil () [28 Dec 2004 17:49:58]
								
								 
 switchport trunk native vlan 10
								---------------------------------------
								Re: native vlan
								DmVash (dmvash@rdu.penza.ru) [28 Dec 2004 20:44:03]
								
								       3Com  vlan 10,      default vlan 1,   vlan   
								---------------------------------------
								Re: native vlan
								Egres () [29 Dec 2004 14:45:36]
								
								>  
>   3750  3COM 4400   dot1q
>    vlan 10, 40. vlan 10 - .
> 3Com      default vlan 1  .
> 
>    :
> interface GigabitEthernet1/0/4
>  description Trunk 3Com
>  switchport trunk encapsulation dot1q
>  switchport trunk native vlan 10
>  switchport mode trunk
>  switchport nonegotiate
>  no ip address
>  no mdix auto
> 
>    3com   10, 40   1
> 
>    3com   vlan 10;    10-    -   (
>     10) -     ,  ?     ?


no swi tru native vlan 10
 3Com 10- Vlan    .
								---------------------------------------
								Re: native vlan
								DmVash (dmvash@rdu.penza.ru) [29 Dec 2004 15:15:15]
								
								     vlan        -    vlan      
     3Com    vlan1,       
								---------------------------------------
								Re: native vlan
								Helper () [29 Dec 2004 15:43:21]
								
								>     3Com    vlan1,       

.   ?
     3 1-  ,        Catalyst native vlan  1-  ,     1- vlan.

   .
								---------------------------------------
								Re: native vlan
								DmVash (dmvash@rdu.penza.ru) [29 Dec 2004 15:57:47]
								
								         10      3Com?
								---------------------------------------
								Re: native vlan
								Helper () [29 Dec 2004 16:25:49]
								
								>         10      3Com? 
  ,  .    .
 .

   vlan1, vlan10   3750(L3),     .
 3750    L2 ,     ,    ,     3,  2Vlan - 1  10        3750.

  . (   -  ())
								---------------------------------------
								Re: native vlan
								DmVash (dmvash@rdu.penza.ru) [29 Dec 2004 16:31:48]
								
								
 
						
						=======================================
						: RSPAN  3550
						=======================================
						fs () [28 Dec 2004 16:15:45]
						
						!

,   RSPAN.

 3550   ( faste0/24).
      .
       , 
    ?
								---------------------------------------
								Re: RSPAN  3550
								 (zva@entel.kiev.ua) [28 Dec 2004 17:59:21]
								
								 .
IOS1(config)# vlan 10
IOS1(config-vlan)# remote-span
IOS1(config-vlan)#name RSPAN_10
IOS1(config)# interface Vlan10
IOS1(config-if)# description RSPAN
IOS1(config-if)# no ip address
IOS1(config-if)# shutdown
IOS1(config)#monitor session 1 source remote vlan 10
IOS1(config)#monitor session 1 destination interface Fa0/8

IOS2(config)# monitor session 1 source interface Fa0/8
IOS2(config)# monitor session 1 source interface Fa0/4 tx
IOS2(config)# monitor session 1 destination remote vlan 10 reflector-port Fa0/23
								---------------------------------------
								Re: RSPAN  3550
								fs () [28 Dec 2004 18:05:28]
								
								, ,    Fa0/8  
destination interface    .
        ?
-   :(
								---------------------------------------
								Re: RSPAN  3550
								fs () [28 Dec 2004 18:08:59]
								
								,  ...

,   
								---------------------------------------
								Re: RSPAN  3550
								 (zva@entel.kiev.ua) [28 Dec 2004 18:12:05]
								
								Fa0/8        IDS.
    RSPAN?
								---------------------------------------
								Re: RSPAN  3550
								fs () [28 Dec 2004 18:19:44]
								
								    IOS2 ?
								---------------------------------------
								Re: RSPAN  3550
								 (zva@entel.kiev.ua) [28 Dec 2004 18:21:52]
								
								
								---------------------------------------
								Re: RSPAN  3550
								 (zva@entel.kiev.ua) [28 Dec 2004 18:24:26]
								
								 ,   Fa0/23     .    .
								---------------------------------------
								Re: RSPAN  3550
								fs () [28 Dec 2004 18:29:54]
								
								vlan10 remote-span      ,
   ,   ?
								---------------------------------------
								Re: RSPAN  3550
								 (zva@entel.kiev.ua) [28 Dec 2004 18:33:26]
								
								 .    VTP .
						
						=======================================
						:   sh int
						=======================================
						smo (s_lyubov@list.ru) [28 Dec 2004 04:07:27]
						
						 Catalyst 2950T-24,  22 .     sh interface      input (CRC),    ,    output.      , deferred,             2-3 .,    10 .        ?
								---------------------------------------
								Re:   sh int
								 (zva@entel.kiev.ua) [28 Dec 2004 15:35:35]
								
								   .       ?
  .
								---------------------------------------
								Re:   sh int
								smo (s_lyubov@list.ru) [29 Dec 2004 02:01:12]
								
								>        ?   .
      ,   .
 :
FastEthernet0/4 is up, line protocol is up (connected)
  Hardware is Fast Ethernet, address is 000b.fdbb.1c84 (bia 000b.fdbb.1c84)
  Description: 
  MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Half-duplex, 10Mb/s
  input flow-control is off, output flow-control is off
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output 00:00:00, output hang never
  Last clearing of "show interface" counters 3w5d
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 1000 bits/sec, 2 packets/sec
     2768131 packets input, 368629432 bytes, 0 no buffer
     Received 32158 broadcasts (0 multicast)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 0 multicast, 0 pause input
     0 input packets with dribble condition detected
     4813977 packets output, 1780497119 bytes, 0 underruns
     291158 output errors, 7764 collisions, 0 interface resets
     0 babbles, 291158 late collision, 50377 deferred
     0 lost carrier, 0 no carrier, 0 PAUSE output
     0 output buffer failures, 0 output buffers swapped out
:
interface FastEthernet0/4
 description 
 switchport access vlan 2
 switchport mode access
 switchport protected
 no ip address
  debug ip error detail  :
Dec 29 08:59:58.578:     UDP src=138, dst=138
Dec 29 08:59:59.822: datagramsize=243, IP 15771: s=172.28.72.155 (Vlan1), d=172.28.72.255, totlen 229, fragment 0, fo 0, dispose ip.notgateway
Dec 29 08:59:59.822:     UDP src=138, dst=138
Dec 29 09:00:00.250: datagramsize=243, IP 2311: s=172.28.72.107 (Vlan1), d=172.28.72.255, totlen 229, fragment 0, fo 0, dispose ip.notgateway
Dec 29 09:00:00.250:     UDP src=138, dst=138
Dec 29 09:00:02.278: datagramsize=243, IP 24494: s=172.28.72.237 (Vlan1), d=172.28.72.255, totlen 229, fragment 0, fo 0, dispose ip.notgateway
Dec 29 09:00:02.278:     UDP src=138, dst=138
Dec 29 09:00:04.186: datagramsize=342, IP 2118: s=172.28.72.116 (Vlan1), d=255.255.255.255, totlen 328, fragment 0, fo 0, dispose udp.noport
Dec 29 09:00:04.186:     UDP src=68, dst=67
Dec 29 09:00:06.774: datagramsize=243, IP 790: s=172.28.72.192 (Vlan1), d=172.28.72.255, totlen 229, fragment 0, fo 0, dispose ip.notgateway
Dec 29 09:00:06.778:     UDP src=138, dst=138

  .   ?
								---------------------------------------
								Re:   sh int
								smo (s_lyubov@list.ru) [11 Jan 2005 03:53:25]
								
								   ?
								---------------------------------------
								Re:   sh int
								 (zva@entel.kiev.ua) [11 Jan 2005 12:15:26]
								
								      .   ?      .        ,      .
								---------------------------------------
								Re:   sh int
								Mikhail (stepanov@uao.mos.ru) [12 Jan 2005 10:18:34]
								
								  debug ip error   .

      ,  half-duplex.
Deferred -         ,           .   ,       (    ).
						
						=======================================
						: Catalyst WS-C2950-24   
						=======================================
						 (vicus@artem-catv.ru) [28 Jun 2004 22:07:46]
						
						:
#sh ver
IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(13)EA1, RELEASE SOFTWARE
(fc1)
Copyright (c) 1986-2003 by cisco Systems, Inc.
Compiled Tue 04-Mar-03 02:14 by yenanh
Image text-base: 0x80010000, data-base: 0x805A8000

ROM: Bootstrap program is CALHOUN boot loader

switch uptime is 9 weeks, 6 days, 12 hours, 24 minutes
System returned to ROM by power-on
System image file is "flash:/c2950-i6q4l2-mz.121-13.EA1.bin"

cisco WS-C2950-24 (RC32300) processor (revision J0) with 20839K bytes of memory.

Processor board ID FOC0719Y1LY
Last reset from system-reset
Running Standard Image
24 FastEthernet/IEEE 802.3 interface(s)

32K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address: 00:0D:28:36:D8:80
Motherboard assembly number: 73-5781-11
Power supply part number: 34-0965-01
Model revision number: J0
Motherboard revision number: A0
Model number: WS-C2950-24
System serial number: FOC0719Y1LY
Configuration register is 0xF
---

       c  vlan    ( -       ).  ,    ...  , etc :)
								---------------------------------------
								Re: Catalyst WS-C2950-24   
								 (BOJIKA@pisem.net) [28 Jun 2004 23:39:36]
								
								conf t
monitor session ?
						
						=======================================
						: Catalyst 2950 igmp snooping
						=======================================
						edis (edis2000@mail.ru) [22 Jun 2004 20:25:32]
						
						, -   2950 igmp snooping?
   --  ,   .       , . 2950      .   ,    ,   .   2950    ?
.
								---------------------------------------
								Re: Catalyst 2950 igmp snooping
								Pavel Rodionov (pavel.rodionov@snt.ua) [23 Jun 2004 10:02:37]
								
								 ?     .
								---------------------------------------
								Re: Catalyst 2950 igmp snooping
								edis (edis2000@mail.ru) [23 Jun 2004 15:27:23]
								
								2 ,   
, : 
C2950SX 12.1(13)EA1, C2950 12.1(6)EA2

  ,  igmp snooping   

ip igmp snooping
ip igmp snooping vlan 1 mrouter interface Fa0/23

     ,    .

sh mac-address-table multicast  
Vlan    Mac Address       Type       Ports
----    -----------       ----       -----
   1    0100.5e02.0c2b    IGMP       Fa0/22, Fa0/23

        .
    -?
								---------------------------------------
								Re: Catalyst 2950 igmp snooping
								Pavel Rodionov (pavel.rodionov@snt.ua) [24 Jun 2004 13:15:59]
								
								 show ip igmp snooping group
								---------------------------------------
								Re: Catalyst 2950 igmp snooping
								edis (edis2000@mail.ru) [25 Jun 2004 08:16:23]
								
								     
								---------------------------------------
								Re: Catalyst 2950 igmp snooping
								Pavel Rodionov (pavel.rodionov@snt.ua) [25 Jun 2004 09:51:05]
								
								  ? 
  12.1(20), .     12.1.19
								---------------------------------------
								Re: Catalyst 2950 igmp snooping
								edis (edis2000@mail.ru) [25 Jun 2004 12:56:10]
								
								 12.1(20)     .
   ,    
								---------------------------------------
								Re: Catalyst 2950 igmp snooping
								Pavel Rodionov (pavel.rodionov@snt.ua) [25 Jun 2004 14:43:11]
								
								 ?  ?
								---------------------------------------
								Re: Catalyst 2950 igmp snooping
								edis (edis2000@mail.ru) [25 Jun 2004 19:36:28]
								
								c2950-i6k2l2q4-mz.121-20.EA2
								---------------------------------------
								Re: Catalyst 2950 igmp snooping
								Pavel Rodionov (pavel.rodionov@snt.ua) [25 Jun 2004 19:54:20]
								
								   SI,    image,     EI.
 c2950-i6q4l2-tar.121-20.EA2.tar
								---------------------------------------
								Re: Catalyst 2950 igmp snooping
								edis (edis2000@mail.ru) [26 Jun 2004 08:45:50]
								
								.  .
    --      2924?
								---------------------------------------
								Re: Catalyst 2950 igmp snooping
								Pavel Rodionov (pavel.rodionov@snt.ua) [26 Jun 2004 10:05:46]
								
								   2924XL,  ,   cisco-   CGMP.      CGMP.
								---------------------------------------
								Re: Catalyst 2950 igmp snooping
								Pavel Rodionov (pavel.rodionov@snt.ua) [26 Jun 2004 10:07:49]
								
								 ...
http://www.cisco.com/univercd/cc/td/doc/product/lan/c2900xl/29_35wc5/scg/swsyst.htm#xtocid31
								---------------------------------------
								Re: Catalyst 2950 igmp snooping
								edis (edis2000@mail.ru) [28 Jun 2004 21:28:29]
								
								,  
						
						=======================================
						:       ?
						=======================================
						denis () [20 Jun 2004 12:08:39]
						
						      
1760 -> 802.1q -> 2950 -> 802.1q -> alliedtelesyn8348

     1760,  ,    2950 ( 1-    1760,  24-     ),   ,      2950?   2950:

version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname c2950-tp1-mps
!
aaa new-model
aaa authentication banner ^C ^C
aaa authentication password-prompt :
aaa authentication username-prompt :
aaa authentication login default local
aaa authentication ppp default local none
aaa authorization exec default local
enable secret 5 SKIP
!
username SKIP password 7 SKIP
clock timezone MSK 3
clock summer-time MSK recurring last Sun Mar 2:00 last Sun Oct 2:00
ip subnet-zero
!
spanning-tree mode pvst
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
!
!
interface FastEthernet0/1
 switchport mode trunk
 no ip address
!
interface FastEthernet0/2
 no ip address
!
interface FastEthernet0/3
 no ip address
!
interface FastEthernet0/4
 no ip address
!
interface FastEthernet0/5
 no ip address
!
interface FastEthernet0/6
 no ip address
!
interface FastEthernet0/7
 no ip address
!
interface FastEthernet0/8
 no ip address
!
interface FastEthernet0/9
 no ip address
!
interface FastEthernet0/10
 no ip address
!
interface FastEthernet0/11
 no ip address
!
interface FastEthernet0/12
 no ip address
!
interface FastEthernet0/13
 no ip address
!
interface FastEthernet0/14
 no ip address
!
interface FastEthernet0/15
 no ip address
!
interface FastEthernet0/16
 no ip address
!
interface FastEthernet0/17
 no ip address
!
interface FastEthernet0/18
 no ip address
!
interface FastEthernet0/19
 no ip address
!
interface FastEthernet0/20
 no ip address
!
interface FastEthernet0/21
 no ip address
!
interface FastEthernet0/22
 no ip address
!
interface FastEthernet0/23
 no ip address
!
interface FastEthernet0/24
 switchport mode trunk
 no ip address
!
interface Vlan1
 ip address 192.168.95.49 255.255.255.0
 no ip route-cache
!
ip http server
!
alias configure e exit
alias exec c configure terminal
alias exec s show running-config
alias exec l show logging
!
line con 0
line vty 5 15
!
end
						
						=======================================
						: Catalyst 6006 pfc2 msfc2    switch
						=======================================
						gosha () [17 Jun 2004 10:42:18]
						
						   .
          ,  session 15  switcha  router.
								---------------------------------------
								Re: Catalyst 6006 pfc2 msfc2    switch
								UncleShi (uncleShi@pisem.net) [17 Jun 2004 18:06:37]
								
								exit
								---------------------------------------
								Re: Catalyst 6006 pfc2 msfc2    switch
								 (BOJIKA@pisem.net) [17 Jun 2004 18:10:14]
								
								 127.0.0.11
								---------------------------------------
								Re: Catalyst 6006 pfc2 msfc2    switch
								gosha () [17 Jun 2004 18:36:42]
								
								 !
						
						=======================================
						:  crossover
						=======================================
						 (solopov@skytc.ru) [14 Jun 2004 17:27:48]
						
						 , !

,   Catalyst 2950  crossover.         ,   ,         .   -    ?
								---------------------------------------
								Re:  crossover
								Pavel Rodionov (pavel.rodionov@snt.ua) [14 Jun 2004 17:48:59]
								
								,    .  ,      ?
								---------------------------------------
								Re:  crossover
								 (solopov@skytc.ru) [14 Jun 2004 18:14:10]
								
								 ,    -  .
    ,      ,     .
								---------------------------------------
								Re:  crossover
								denis () [20 Jun 2004 12:25:46]
								
								 ,   (RJ45)     :)
						
						=======================================
						: catalyst 3750   Gi 
						=======================================
						 () [11 Jun 2004 16:42:49]
						
						!

      .
 3750   3745  3745  FE .
 -   .    
speed 100
duplex full
  3745   input crc error,   3750   ,      ,   20  .

duplex half  ,  .
     3745,  3750   ,           ,       .

    ,   .
   3750  2950,     .


3750>sh ver
Cisco Internetwork Operating System Software
IOS (tm) C3750 Software (C3750-I5-M), Version 12.1(19)EA1c, RELEASE SOFTWARE (fc2)
Copyright (c) 1986-2004 by cisco Systems, Inc.
Compiled Tue 03-Feb-04 08:18 by yenanh
Image text-base: 0x00003000, data-base: 0x0091D318

ROM: Bootstrap program is C3750 boot loader
BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.1(14r)EA1a, RELEASE SOFTWARE (fc1)

3750 uptime is 1 day, 5 hours, 42 minutes
System returned to ROM by power-on
System image file is "flash:c3750-i5-mz.121-19.EA1c/c3750-i5-mz.121-19.EA1c.bin"

cisco WS-C3750G-24TS (PowerPC405) processor (revision D0) with 118776K/12288K bytes of mem
ory.
Processor board ID CAT0812N1XJ
Last reset from power-on
Bridging software.
1 Virtual Ethernet/IEEE 802.3  interface(s)
28 Gigabit Ethernet/IEEE 802.3 interface(s)
The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address       : 00:0F:8F:DF:5D:00
Motherboard assembly number     : 73-7058-10
Power supply part number        : 341-0045-01
Motherboard serial number       : CAT081202YF
Power supply serial number      : PHI074601KL
Model revision number           : D0
Motherboard revision number     : A0
Model number                    : WS-C3750G-24TS-E
System serial number            : CAT0812N1XJ
Hardware Board Revision Number  : 0x09


Switch   Ports  Model              SW Version              SW Image
------   -----  -----              ----------              ----------
*    1   28     WS-C3750G-24TS     12.1(19)EA1c            C3750-I5-M


Configuration register is 0xF
						
						=======================================
						:    access-list  
						=======================================
						 (dymsh@ttk.ru) [11 Jun 2004 15:51:06]
						
						 CISCO-LRE 2950

mac access-list extended <name>
  <  >

 
int lo0/4
mac access-group <name> in

  - %Error:Out of Rule Resources

access-list  -  ACE.      .  lo0/20  .   ?    ?
						
						=======================================
						:   catalyst 2948
						=======================================
						Tom () [10 Jun 2004 17:31:55]
						
						       :

Jun 10 17:26:21 192.168.114.22 2004 Jun 10 17:12:50 %SYS-4-P2_WARN: 1/Host 00:30:94:cb:3c:20 is flapping between port 2/18 and port 2/11
Jun 10 17:26:53 192.168.114.22 2004 Jun 10 17:13:21 %SYS-4-P2_WARN: 1/Host 00:d0:06:04:f5:b9 is flapping between port 2/18 and port 2/3
Jun 10 17:27:08 192.168.114.22 2004 Jun 10 17:13:37 %SYS-4-P2_WARN: 1/Host 00:d0:06:04:f5:b9 is flapping between port 2/18 and port 2/3

    ?
								---------------------------------------
								Re:   catalyst 2948
								 (BOJIKA@pisem.net) [10 Jun 2004 18:15:11]
								
								>        :
> 
> Jun 10 17:26:21 192.168.114.22 2004 Jun 10 17:12:50 %SYS-4-P2_WARN: 1/Host 00:30:94:cb:3c:20 is
> flapping between port 2/18 and port 2/11
> Jun 10 17:26:53 192.168.114.22 2004 Jun 10 17:13:21 %SYS-4-P2_WARN: 1/Host 00:d0:06:04:f5:b9 is
> flapping between port 2/18 and port 2/3
> Jun 10 17:27:08 192.168.114.22 2004 Jun 10 17:13:37 %SYS-4-P2_WARN: 1/Host 00:d0:06:04:f5:b9 is
> flapping between port 2/18 and port 2/3

> 
>     ?
    spanning tree
								---------------------------------------
								Re:   catalyst 2948
								 (wuss@wuss.ru) [10 Jun 2004 18:46:17]
								
								1.  %SYS-4-P2_WARN:   Host [mac addr] is flapping between port [dec/dec] and port [dec/dec]

The above message indicates that your Catalyst 4000 switch has learned a MAC address that already exists in its CAM table on a port other than the original one.

Recommended Action: What you need to do is to track down how this MAC address was learned from both ports.

Step 1: Consider port the first port. Issue the show cam dynamic [port] command. If you see the MAC address 00:50:0f:20:08:00 coming out in the list of the MAC addresses learned on this port, try to see if this is a single host that is connected or if there are multiple hosts registered on that port.

Step 2: If it is a single host that is connected, check the other port that is registered and see if the host is dually attached to the switch. If however, the host has connections to other devices that can eventually lead back into this switch, try to track down the intermediate devices that are in between.

------------
2.  %SYS-4-P2_WARN:   Filtering Ethernet MAC address of value zero

The "Filtering Ethernet MAC address of value zero" syslog message is generated when the switch receives packets with a source MAC address of 00-00-00-00-00-00, which is an invalid source MAC.

Recommended Action: The syslog message indicates that the switch is refusing to learn the invalid address. However, the switch will forward traffic sourced from an all zeros MAC address. Try to identify the end station that is generating frames with an all 0's source MAC address. Typically, such frames are transmitted from a traffic generator (for example, SmartBits), certain types of servers (such as load balancing IBM WebSphere servers), a misconfigured router or end station (for example, a device transmitting all 0's broadcasts), or a faulty NIC.
						
						=======================================
						: catalyst 3548 & GBIC
						=======================================
						oleg (o1eg@mail.ru) [09 Jun 2004 11:37:41]
						
						  
  
    ws-c3548-xl-en     GBIC.
     (  media type is SX)
       RJ45,       .
   cli  sh int g0/2       media type LX.
 
1       ,    ?
2    ?          ?      
  media type is .  ?      GBIC,      ,    ?
						
						=======================================
						: EtherChannel
						=======================================
						Andry () [08 Jun 2004 15:54:54]
						
						 Catalyst 2950T 48,    Standard Image.
  EtherChennel    PAgP.
    LACP. 
     :
(config)#interface gigabitEthernet 0/2
(config-if)#channel-protocol pagp
   ,      LACP.
 -,   .  .
								---------------------------------------
								Re: EtherChannel
								Pavel Rodionov (pavel.rodionov@snt.ua) [08 Jun 2004 19:00:00]
								
								 show ver, show run     show interface etherchannel
								---------------------------------------
								Re: EtherChannel
								Andry () [09 Jun 2004 12:51:39]
								
								Test#show version
Cisco Internetwork Operating System Software
IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(19)EA1c, RELEASE SOFTWARE
 (fc2)
Copyright (c) 1986-2004 by cisco Systems, Inc.
Compiled Mon 02-Feb-04 23:29 by yenanh
Image text-base: 0x80010000, data-base: 0x8058A000

ROM: Bootstrap program is C2950 boot loader

Test uptime is 1 day, 3 hours, 47 minutes
System returned to ROM by power-on
System image file is "flash:/c2950-i6q4l2-mz.121-19.EA1c.bin"

cisco WS-C2950T-48-SI (RC32300) processor (revision D0) with 20808K bytes of mem
ory.
Processor board ID FHK0809Y1TQ
Last reset from system-reset
Running Standard Image
48 FastEthernet/IEEE 802.3 interface(s)
2 Gigabit Ethernet/IEEE 802.3 interface(s)

32K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address: 00:0F:34:91:E6:40
Motherboard assembly number: 73-9102-03
Power supply part number: 34-0965-01
Motherboard serial number: FOC08081TM5
Power supply serial number: DAB08051Y1H
Model revision number: D0
Motherboard revision number: A0
Model number: WS-C2950T-48-SI
System serial number: FHK0809Y1TQ
CLEI Code Number: CNMRU002RA
Top Assembly Part Number: 800-24111-01
Top Assembly Revision Number: D0
Version ID: N/A
Configuration register is 0xF

Test#show interfaces etherchannel
----
FastEthernet0/1:
Port state    = Up Sngl-port-Bndl Mstr Not-in-Bndl
Channel group = 1           Mode = Passive      Gcchange = -
Port-channel  = null        GC   =   -         Pseudo port-channel = Po1
Port index    = 0           Load = 0x00        Protocol =   LACP

Flags:  S - Device is sending Slow LACPDUs   F - Device is sending fast LACPDUs.
        A - Device is in active mode.        P - Device is in passive mode.

Local information:
                            LACP port     Admin     Oper    Port     Port
Port      Flags   State     Priority      Key       Key     Number   State
Fa0/1     SP      indep     32768         0x1       0x1     0x1      0x7C

Age of the port in the current state: 00d:01h:16m:49s

----
Port-channel1:Port-channel1   (Primary aggregator)

Age of the Port-channel   = 01d:00h:40m:11s
Logical slot/port   = 1/0          Number of ports = 0
HotStandBy port = null
Port state          = Port-channel Ag-Not-Inuse
Protocol            =   LACP

Test#show running-config

interface Port-channel1
 no ip address

interface GigabitEthernet0/1
switchport mode trunk
 no ip address
 channel-group 1 mode passive

interface GigabitEthernet0/2
switchport mode trunk
 no ip address
 channel-group 1 mode passive
								---------------------------------------
								Re: EtherChannel
								 () [09 Jun 2004 14:10:19]
								
								        shutdown?
             .
								---------------------------------------
								Re: EtherChannel
								Andry () [09 Jun 2004 14:29:56]
								
								Shutdown ,  .      ?
								---------------------------------------
								Re: EtherChannel
								Pavel Rodionov (pavel.rodionov@snt.ua) [09 Jun 2004 14:46:45]
								
								 . 
-     ,   show interface etherchannel   .   ,    fastethernet 0/1.     channel-group mode pagp?
hint.  channel-group,   channel-protocol pagp   channel-group 1 mode auto     desirable  ..
								---------------------------------------
								Re: EtherChannel
								Andry () [10 Jun 2004 17:04:20]
								
								C FastEthernetom 0/1  .
    EtherChennel,  ,  EtherChennel    .
 .
						
						=======================================
						: syslog   6500
						=======================================
						Corwax (corwax@imis.ru) [08 Jun 2004 10:19:50]
						
						 ...
       6500.             .    . :
logging trap debugging
logging source-interface Vlan254
logging 192.168.254.64

-    ...
								---------------------------------------
								Re: syslog   6500
								Pavel Rodionov (pavel.rodionov@snt.ua) [08 Jun 2004 10:42:55]
								
								 .   logging event link-status
								---------------------------------------
								Re: syslog   6500
								Corwax (corwax@imis.ru) [08 Jun 2004 11:00:40]
								
								     - Jesus loves you!!! ;-)))
! !
						
						=======================================
						:     1000BASE-SX
						=======================================
						Corwax (corwax@imis.ru) [08 Jun 2004 10:15:01]
						
						 !
    ,    650  .     1000BASE-SX GBIC-  .  ,    . .   .    (  ,   )     20 .          .    2950SX (   SX).
  :       ? ;-)))    ?         ?
								---------------------------------------
								Re:     1000BASE-SX
								Pavel Rodionov (pavel.rodionov@snt.ua) [08 Jun 2004 12:37:08]
								
								    .      ,          ,       "  ",       ,     ...  -    ,  .   550 .
								---------------------------------------
								Re:     1000BASE-SX
								Corwax (corwax@imis.ru) [09 Jun 2004 11:57:31]
								
								  ""  ,       ... ;-)    .  ,  ,   - !   !
      .    -      !
								---------------------------------------
								Re:     1000BASE-SX
								Alexander (ip33@mail.ru) [22 Jun 2004 21:57:30]
								
								 MMF-  1000Base-SX  900:
http://www.ampnetconnect.ru/catalog/focable.html
								---------------------------------------
								Re:     1000BASE-SX
								Anton_A () [23 Jun 2004 09:10:04]
								
								,       ,   Cisco  GBIC    :
http://www.cisco.com/en/US/products/hw/modules/ps872/products_data_sheet09186a008014cb5e.html
								---------------------------------------
								Re:     1000BASE-SX
								Corwax (corwax@imis.ru) [23 Jun 2004 10:32:57]
								
								;-) -! ;-)         (220, 275, 500, 550, 10, 70)! ;-))))

           " -  !     !"      ! ;-)   ,    ! ;-)
     !
						
						=======================================
						:         .
						=======================================
						alex (alex2808@mail.ru) [04 Jun 2004 19:31:39]
						
						, .
   2600  IP .
Call Manager Express   Report\Call History,      .    . 
  -           ?
    -  ?
   ""      ?
						
						=======================================
						: L2 CoS
						=======================================
						osenevp (osenevp@mail.ru) [03 Jun 2004 16:35:58]
						
						!

-  3550(EI)   2950(SI) 802.1 CoS    (5)          (0), ..         ?

 -                QoS(CoS) .

.
								---------------------------------------
								Re: L2 CoS
								Sergey Erohin (erseal@nm.ru) [04 Jun 2004 11:23:32]
								
								show mls qos interface
								---------------------------------------
								Re: L2 CoS
								osenevp (osenevp@mail.ru) [04 Jun 2004 12:33:10]
								
								show mls qos interface

GigabitEthernet0/1
trust state: not trusted
trust mode: not trusted
COS override: dis
default COS: 0
DSCP Mutation Map: Default DSCP Mutation Map
trust device: none

....

COS = 0           ?
						
						=======================================
						: UDLD over FO converters
						=======================================
						Alexander (ip33@mail.ru) [02 Jun 2004 16:05:32]
						
						 !

,      .
 (6k, c4k, 2950)     Allied Telesyn 100Base-TX/100Base-FX    shutdown          . Missing Link    , ..            (   AlliedTelesyn   ).

Cisco UDLD    - UDLD     Ethernet SNAP (   Control plane- CDP, PAgP, DTP  ..)         .

     c6k :
----
This example shows how to enable the UDLD message display for port 1 on
module 2:
Console> (enable) set udld enable 2/1
UDLD enabled on port 2/1.
Warning:UniDirectional Link Detection
should be enabled only on ports not connected to hubs,
media CONVERTERS or similar devices.
Console> (enable)
----
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/sw_8_3/cmd_ref/set_v.htm#wp1031118

   c4k    .

:
1.     ?    ,       -  Ethernet (      Ethernet)?
2.      UDLD Aggressive mode   Etherchannel,    Etherchannel     ( )   - MissingLink       ,   Allied Telesyn?

 ,
, ip33@mail.ru
								---------------------------------------
								Re: UDLD over FO converters
								Alexander (ip33@mail.ru) [02 Jun 2004 18:55:03]
								
								    TAC',    -  :

In enbling UDLD aggressive mode, software release 5.4(3) and later releases support this but its use is recommended only for POINT-TO-POINT links between Cisco switches. If you have this set up...

______                     converter                    _______
______-------------------------[]-----------------------_______
Cat2950    100Base-TX       100Base-FX                  Cat4000


UDLD might not work properly, since it is not recommended to be configured on ports with converter.

Here is the url for that: http://cisco.com/en/US/partner/products/hw/switches/ps663/products_configuration_guide_chapter09186a0080176335.html#1021885
						
						=======================================
						:     VLAN
						=======================================
						mtchizhov () [01 Jun 2004 16:41:07]
						
						   ,    (3550)   VLAN,     ?
								---------------------------------------
								Re:     VLAN
								 (BOJIKA@pisem.net) [01 Jun 2004 16:53:36]
								
								....
delete flash:vlan.dat
wr
reload
 :))
								---------------------------------------
								 ! ..
								mtchizhov () [03 Jun 2004 14:37:17]
								
								 !      ,  .   -   .
								---------------------------------------
								Re:  ! ..
								 () [04 Jun 2004 15:50:12]
								
								,  VTP CLIENT ?
						
						=======================================
						:   
						=======================================
						 (mikle@aaanet.ru) [31 May 2004 13:10:36]
						
						  -     (Catalyst
3550)  Ethernet-   
    Catalyst 65.
  "" 65   
, ..  ,                   2,  ""      .        
    .
								---------------------------------------
								Re:   
								 (BOJIKA@pisem.net) [31 May 2004 15:22:02]
								
								...
								---------------------------------------
								Re:   
								 (mikle@aaanet.ru) [01 Jun 2004 09:11:57]
								
								 ,  ?    ?
								---------------------------------------
								Re:   
								Alexandr () [23 Jun 2004 16:42:09]
								
								  VLAN  :)
-  VLAN
-   VLAN   
 :)
								---------------------------------------
								Re:   
								 (mikle@aaanet.ru) [24 Jun 2004 09:07:21]
								
								,  ,    -       , ,   ""   10
 __   "" -  __  10,          3.
								---------------------------------------
								Re:   
								Anton_A () [24 Jun 2004 09:20:56]
								
								  ,   .   ?
								---------------------------------------
								Re:   
								 (mikle@aaanet.ru) [24 Jun 2004 09:23:53]
								
								    ,  ...
  -     .
								---------------------------------------
								Re:   
								 (BOJIKA@pisem.net) [24 Jun 2004 09:25:01]
								
								 ,     VLAN'...      ,     ...
								---------------------------------------
								Re:   
								 (mikle@aaanet.ru) [24 Jun 2004 09:39:24]
								
								  ,       
     ???  ,  
 1- () ...  2       -   STP.
								---------------------------------------
								Re:   
								Andrey Petrov (petrov@cittel.ru) [24 Jun 2004 11:35:54]
								
								>  Catalyst 65. 
   ? :-)
								---------------------------------------
								Re:   
								UncleShi (uncleShi@pisem.net) [24 Jun 2004 21:36:01]
								
								 .  ...
 13- 6500  48-  10.100...
								---------------------------------------
								Re:   
								UncleShi (uncleShi@pisem.net) [24 Jun 2004 21:38:37]
								
								  -,   ,        6500.
   .
						
						=======================================
						: sh int -  
						=======================================
						 (rybinpv@surgut.ru) [31 May 2004 11:41:43]
						
						  :
  trunk   Catalyst 2950
    
    sh int f0/18

  5 minute input rate 9000 bits/sec, 12 packets/sec
  5 minute output rate 156000 bits/sec, 35 packets/sec

   sh int f0/24
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute ouxtput rate 0 bits/sec, 0 packets/sec
sh ver
  System image file is "flash:/c2950-i6q4l2-mz.121-13.EA1.bin"

     ?        ,   .
								---------------------------------------
								Re: sh int -  
								Pavel Rodionov (pavel.rodionov@snt.ua) [01 Jun 2004 10:55:48]
								
								  . 
 IOS     ?
								---------------------------------------
								Re: sh int -  
								 (rybinpv@surgut.ru) [01 Jun 2004 11:54:28]
								
								IOS  , ..   ,  
   .
        
 .      . 
     
 5 minute "ouxtput" rate 0 bits/sec, 0 packets/sec
     ,       
IOS.

     , 

version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname ***
!
enable secret 5 ***
enable password 7 ***
!
username root password 7 ***
ip subnet-zero
ip name-server ***
ip name-server ***
!
spanning-tree mode pvst
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
!
!
interface FastEthernet0/1
 description Link to ***
 switchport access vlan **
 no ip address
 speed 10
!
interface FastEthernet0/2
 no ip address
!
< cut >
!
interface FastEthernet0/24
 description Link to ***
 switchport mode trunk
 no ip address
 duplex half
 speed 10
!
interface Vlan1
 ip address ***
 no ip route-cache
!
ip default-gateway ***
no ip http server
!
access-list 1 permit ***
access-list 1 permit ***
snmp-server engineID local ***
snmp-server community *** RW 1
snmp-server community *** RO 1
snmp-server contact ***
banner motd ^C *** ^C
!
line con 0
 login local
line vty 0 4
 exec-timeout 700 0
 logging synchronous
 login local
line vty 5 15
 login
!
ntp clock-period 17180467
ntp server ***
end
								---------------------------------------
								Re: sh int -  
								Pavel Rodionov (pavel.rodionov@snt.ua) [01 Jun 2004 12:31:13]
								
								ftp://ftp.cisco.com/pub/lan/catalyst/
    12.1.12
  ...
						
						=======================================
						:     Catalyst 2950-24
						=======================================
						 (ikostomarov@4ka.mipt.ru) [29 May 2004 12:18:40]
						
						      
  -      Image  PQ? cisco.com ,  ,     ,   WFQ .  ?      PQ   ,  ,   .    ,    PQ,   WFQ
								---------------------------------------
								Re:     Catalyst 2950-24
								 (BOJIKA@pisem.net) [29 May 2004 14:18:29]
								
								,  ""   ...
http://www.cisco.com/en/US/products/hw/switches/ps628/products_configuration_guide_chapter09186a00800d84c9.html#41062
								---------------------------------------
								Re:     Catalyst 2950-24
								 (ikostomarov@4ka.mipt.ru) [29 May 2004 15:56:40]
								
								      
,   PQ
    ?    PQ  
								---------------------------------------
								Re:     Catalyst 2950-24
								Pavel Rodionov (pavel.rodionov@snt.ua) [01 Jun 2004 10:53:53]
								
								>       
> ,   PQ
>     ?    PQ  

wrr queue bandwidth ...     0,    expedite queue
						
						=======================================
						:     ethercannel
						=======================================
						aami () [27 May 2004 15:30:45]
						
						    ,    , ,  90% ,  ,  
								---------------------------------------
								Re:     ethercannel
								Pavel Rodionov (pavel.rodionov@snt.ua) [27 May 2004 16:17:38]
								
								, 
								---------------------------------------
								Re:     ethercannel
								 (BOJIKA@pisem.net) [27 May 2004 16:48:47]
								
								  etherchannel     ....
						
						=======================================
						: EtherChannel
						=======================================
						Andry () [27 May 2004 15:19:15]
						
						  :
Catalist 3750    EtherChannel  Catalist 2950T-48.
 Catalist 2950T-48 IOS Standart image.
Catalist 2950T-24 (IOS Enhanced Image) c Catalist 3750  EtherChannel   .
    ?
								---------------------------------------
								Re: EtherChannel
								Pavel Rodionov (pavel.rodionov@snt.ua) [27 May 2004 15:37:00]
								
								      show ver...
								---------------------------------------
								Re: EtherChannel
								Andry () [27 May 2004 17:31:58]
								
								Catalist 2950T-48

Swith_2_2#show running-config
Building configuration...

Current configuration : 3081 bytes
!
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Swith_2_2
!
enable secret 5 $1$Oc3n$r/GRgzVuV01Qx263WoDFK.
!
ip subnet-zero
!
ip domain-name .......
!
cluster commander-address 000d.2975.2900 member 10 name 
........ vlan 1
spanning-tree mode pvst
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
!
!
interface GigabitEthernet0/1
 switchport mode trunk
 no ip address
 channel-group 1 mode active
 lacp port-priority 128
!
interface GigabitEthernet0/2
 switchport mode trunk
 switchport nonegotiate
 no ip address
 channel-group 1 mode active
 lacp port-priority 128
!
interface Vlan1
 ip address 192.168.0.28 255.255.255.0
 no ip route-cache
!
swith_2_2#show version
Cisco Internetwork Operating System Software
IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(19)EA1c, RELEASE SOFTWARE
 (fc2)
Copyright (c) 1986-2004 by cisco Systems, Inc.
Compiled Mon 02-Feb-04 23:29 by yenanh
Image text-base: 0x80010000, data-base: 0x8058A000

ROM: Bootstrap program is C2950 boot loader

spetsremont_2_2 uptime is 54 minutes
System returned to ROM by power-on
System image file is "flash:/c2950-i6q4l2-mz.121-19.EA1c.bin"

cisco WS-C2950T-48-SI (RC32300) processor (revision D0) with 20808K bytes of mem
ory.
Processor board ID FHK0810Z07Z
Last reset from system-reset
Running Standard Image
48 FastEthernet/IEEE 802.3 interface(s)
2 Gigabit Ethernet/IEEE 802.3 interface(s)

32K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address: 00:0F:34:BA:02:40
Motherboard assembly number: 73-9102-03
Power supply part number: 34-0965-01
Motherboard serial number: FOC08090F0S
Power supply serial number: DAB08030TAK
Model revision number: D0
Motherboard revision number: A0
Model number: WS-C2950T-48-SI
System serial number: FHK0810Z07Z
CLEI Code Number: CNMRU002RA
Top Assembly Part Number: 800-24111-01
Top Assembly Revision Number: D0
Version ID: N/A
Configuration register is 0xF

Catalist 3750

ROOT#show running-config
Building configuration...

Current configuration : 3517 bytes
!
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname ROOT
!
enable secret 5 $1$Oc3n$r/GRgzVuV01Qx263WoDFK.
!
ip subnet-zero
ip routing
ip domain-name SPETSREMONT
!
cluster enable Spetsremont_Perovo 0
cluster member 1 mac-address 000b.be69.3600
cluster member 2 mac-address 000b.be88.b440
cluster member 3 mac-address 000b.be88.b880
cluster member 4 mac-address 000b.be88.e280
cluster member 5 mac-address 000b.fc2e.2fc0
cluster member 6 mac-address 000d.29d2.4100
cluster member 7 mac-address 000d.29d2.bfc0
cluster member 8 mac-address 000d.bce1.7a00
cluster member 9 mac-address 000f.3491.f300
cluster member 10 mac-address 000f.34ba.0240
cluster member 11 mac-address 000f.3491.e640
!
!
spanning-tree mode pvst
spanning-tree extend system-id
spanning-tree vlan 1 priority 24576
spanning-tree vlan 2 priority 24576
spanning-tree vlan 3 priority 24576
spanning-tree vlan 4 priority 24576
!
!
interface Port-channel1
 no ip address
!
interface Port-channel2
 no ip address
!
interface Port-channel3
 no ip address
!
interface GigabitEthernet1/0/1
 switchport trunk encapsulation dot1q
 switchport mode trunk
 no ip address
 channel-group 1 mode desirable
!
interface GigabitEthernet1/0/2
 switchport trunk encapsulation dot1q
 switchport mode trunk
 no ip address
 channel-group 1 mode desirable
!
interface GigabitEthernet1/0/3
 switchport access vlan 2
 switchport mode access
 no ip address
!
interface GigabitEthernet1/0/4
 switchport trunk encapsulation dot1q
 switchport mode trunk
 no ip address
!
interface GigabitEthernet1/0/5
 switchport trunk encapsulation dot1q
 switchport mode trunk
 no ip address
 channel-group 2 mode desirable
!
interface GigabitEthernet1/0/6
 no ip address
 channel-group 2 mode desirable
!
interface GigabitEthernet1/0/7
 no ip address
 channel-group 3 mode desirable
!
interface GigabitEthernet1/0/8
 no ip address
 channel-group 3 mode desirable
interface Vlan1
 ip address 192.168.0.16 255.255.255.0
!
interface Vlan2
 ip address 192.168.3.16 255.255.255.0
!
interface Vlan3
 ip address 192.168.1.16 255.255.255.0
!
interface Vlan4
 ip address 192.168.2.16 255.255.255.0
!
ip classless
ip http server

ROOT#show version
Cisco Internetwork Operating System Software
IOS (tm) C3750 Software (C3750-I9-M), Version 12.1(11)AX, RELEASE SOFTWARE (fc3)
Copyright (c) 1986-2003 by cisco Systems, Inc.
Compiled Mon 21-Apr-03 11:37 by madison
Image text-base: 0x00003000, data-base: 0x006BA6CC

ROM: Bootstrap program is C3750 boot loader
BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.1(11r)AX, RELEASE SOFTWARE
 (fc1)

ROOT uptime is 3 days, 9 hours, 46 minutes
System returned to ROM by power-on
System image file is "flash:c3750-i9-mz.121.11-AX/c3750-i9-mz.121.11-AX.bin"

cisco WS-C3750G-24T-S (PowerPC405) processor (revision A0) with 120822K/10240K b
ytes of memory.
Processor board ID CAT0725R0M8
Last reset from power-on
4 Virtual Ethernet/IEEE 802.3  interface(s)
24 Gigabit Ethernet/IEEE 802.3 interface(s)
The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address       : 00:0D:29:75:29:00
Motherboard assembly number     : 73-8046-05
Power supply part number        : 341-0048-01
Motherboard serial number       : CAT072504VN
Power supply serial number      : LIT07180038
Model revision number           : A0
Motherboard revision number     : A0
Model number                    : WS-C3750G-24T-S
System serial number            : CAT0725R0M8


Switch     Ports  Model              SW Version              SW Image

------     -----  -----              ----------              ----------

*    1     24     WS-C3750G-24T-S    12.1(11)AX              C3750-I9-M




Configuration register is 0xF

3750   Catalist 2950T-48 3- EtherChennel
						
						=======================================
						: 3750  Netflow
						=======================================
						 () [26 May 2004 13:02:30]
						
						,      ntflow   ? (Version 12.1(14)EA1a)
  :
ip flow-export version 5
ip flow-export destination 10.1.1.15 8777
interface Vlan100
 ip address 10.0.1.8 255.255.255.0
 ip route-cache flow

 sh ip flow ex:
Flow export is enabled
  Exporting flows to 10.1.1.15 (8777)
  Exporting using source IP address 10.1.0.1
  Version 5 flow records
  56 flows exported in 52 udp datagrams
  0 flows failed due to lack of export packet
  0 export packets were sent up to process level

  "56 flows exported in 52 udp datagrams"      ,        . .. ,    ,    Vlan, , .
   , .. netflow  Cisco3640 (   3750  - vlan100)     .
								---------------------------------------
								Re: 3750  Netflow
								 (BOJIKA@pisem.net) [26 May 2004 13:56:23]
								
								   netflow.....
								---------------------------------------
								Re: 3750  Netflow
								 () [26 May 2004 14:49:48]
								
								...        ,  enable!..
 ,   ?   ?
								---------------------------------------
								Re: 3750  Netflow
								 (BOJIKA@pisem.net) [26 May 2004 15:12:09]
								
								   www.cisco.com
   +   ...
								---------------------------------------
								Re: 3750  Netflow
								 () [26 May 2004 15:33:13]
								
								, ,    -  ....
   ,    :(
  ,  netflow      (12.2(20)SE, ),     unsupported   :)
								---------------------------------------
								Re: 3750  Netflow
								 () [17 Jun 2004 15:35:34]
								
								  12.2(20)SE
 ,    8(
     ?
						
						=======================================
						: Catalyst 3548 & 1 vlan  
						=======================================
						Serg () [24 May 2004 16:01:00]
						
						 !
  -      3548 1 vlan  ,        .
IOS - c3500xl-c3h2s-mz.120-5.WC9a.bin.
 switchport trunk allowed vlan remove 1      . :(
								---------------------------------------
								Re: Catalyst 3548 & 1 vlan  
								Pavel Rodionov (pavel.rodionov@snt.ua) [24 May 2004 16:36:14]
								
								 .       ...
								---------------------------------------
								Re: Catalyst 3548 & 1 vlan  
								Serg () [25 May 2004 08:21:02]
								
								  -     ?    .
								---------------------------------------
								Re: Catalyst 3548 & 1 vlan  
								Alexander () [25 May 2004 08:37:25]
								
								>   -     ?    .

,     -  , 
switchport trunk native vlan 1005

  vlan1         ,   ,   .
						
						=======================================
						: cisco3750 + AT8326GB
						=======================================
						Grid (grid@rdtc.ru) [20 May 2004 06:19:51]
						
						   3750  ,        ,    .
 :
 AT   tagged mode,    vlan     .
 3750     AT:
>switchport encapsulation dot1q
>switchport mode trunk
          vlan':
>switchport mode access
>switchport access vlan 33

  ? 

P.S.     ...    4  :)
								---------------------------------------
								Re: cisco3750 + AT8326GB
								Grid (grid@rdtc.ru) [21 May 2004 11:53:16]
								
								    ?   ... ,  .
								---------------------------------------
								Re: cisco3750 + AT8326GB
								 (BOJIKA@pisem.net) [21 May 2004 12:34:19]
								
								   up'e?
								---------------------------------------
								Re: cisco3750 + AT8326GB
								DarkRanger (dark_ranger@pisem.net) [21 May 2004 17:00:13]
								
								  ?         .
								---------------------------------------
								Re: cisco3750 + AT8326GB
								Grid (grid@rdtc.ru) [23 May 2004 11:39:41]
								
								 ,   -  :
      vlan,     ? ...     ,    .
								---------------------------------------
								     VLAN  2950  AT8024?
								denis () [28 Jun 2004 08:24:05]
								
								 7206 (   802.1q)   2950      VLAN...    ( )VLAN  2950   AT8024.
						
						=======================================
						: VTP
						=======================================
						 (dchernyatin@yug.sibnefteprovod.ru) [18 May 2004 20:22:07]
						
						  !

 Catalyst 4507,   VTP-  VLAN'.
   3550, 3500XL  2900XL.
 VTP  4507:
Switch#conf t
Switch(config)#vtp domain mydomain
Switch(config)#vtp mode server
Switch(config)#vtp ver 2

 VTP  3500XL  2900XL:
c3500xl#vlan database
c3500xl(vlan)#vtp client
c3500xl(vlan)#vtp domain mydomain
c3500xl(vlan)#vtp v2-mode
c3500xl(vlan)#apply
c3500xl(vlan)#exit 

 ,     show vlan    VLAN'  4507. ,   .

 3550     ,        ... :(

    ?

 .
								---------------------------------------
								Re: VTP
								Pavel Rodionov (pavel.rodionov@snt.ua) [19 May 2004 09:45:20]
								
								 show ver  show vtp status.
      vtp transparent,        .    v2 mode,   .
								---------------------------------------
								Re: VTP
								 (dchernyatin@yug.sibnefteprovod.ru) [19 May 2004 13:02:20]
								
								----------------------- 4507 -------------------------------------
Switch#sh ver
Cisco Internetwork Operating System Software
IOS (tm) Catalyst 4000 L3 Switch Software (cat4000-I9S-M), Version 12.1(19)EW, )
TAC Support: http://www.cisco.com/tac
Copyright (c) 1986-2003 by cisco Systems, Inc.
Compiled Fri 27-Jun-03 14:52 by kellythw
Image text-base: 0x00000000, data-base: 0x00F12C5C

ROM: 12.1(12r)EW
Dagobah Revision 86, Swamp Revision 28

Switch uptime is 3 weeks, 5 days, 4 hours, 51 minutes
System returned to ROM by power-on
System image file is "bootflash:cat4000-i9s-mz.121-19.EW.bin"

cisco WS-C4507R (XPC8245) processor (revision 7) with 524288K bytes of memory.
Processor board ID FOX0721039M
Last reset from PowerUp
96 FastEthernet/IEEE 802.3 interface(s)
8 Gigabit Ethernet/IEEE 802.3 interface(s)
403K bytes of non-volatile configuration memory.

Configuration register is 0x2102


Switch#sh vtp st
VTP Version                     : 2
Configuration Revision          : 33
Maximum VLANs supported locally : 1005
Number of existing VLANs        : 14
VTP Operating Mode              : Server
VTP Domain Name                 : ad
VTP Pruning Mode                : Disabled
VTP V2 Mode                     : Enabled
VTP Traps Generation            : Disabled
MD5 digest                      : 0x7B 0x6A 0x91 0x49 0x8F 0x4B 0x7E 0x55
Configuration last modified by 172.16.1.2 at 1-21-03 20:50:58
Local updater ID is 172.16.1.2 on interface Vl1 (lowest numbered VLAN inter)
----------------------- end 4507 ---------------------------------


----------------------- 3550 -------------------------------------
c3550#sh ver
Cisco Internetwork Operating System Software
IOS (tm) C3550 Software (C3550-I9Q3L2-M), Version 12.1(8)EA1c, RELEASE SOFTWARE)
Copyright (c) 1986-2002 by cisco Systems, Inc.
Compiled Fri 15-Feb-02 10:29 by antonino
Image text-base: 0x00003000, data-base: 0x004C69BC

ROM: Bootstrap program is C3550 boot loader

c3550 uptime is 3 hours, 21 minutes
System returned to ROM by power-on
System image file is "flash:/c3550-i9q3l2-mz.121-8.EA1c/c3550-i9q3l2-mz.121-8.E"

cisco WS-C3550-24 (PowerPC) processor (revision C0) with 65526K/8192K bytes of .
Processor board ID CAT0622X0F7
Last reset from warm-reset
Running Layer2 Switching Only Image

Ethernet-controller 1 has 12 Fast Ethernet/IEEE 802.3 interfaces

Ethernet-controller 2 has 12 Fast Ethernet/IEEE 802.3 interfaces

Ethernet-controller 3 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 4 has 1 Gigabit Ethernet/IEEE 802.3 interface

24 FastEthernet/IEEE 802.3 interface(s)
2 Gigabit Ethernet/IEEE 802.3 interface(s)

The password-recovery mechanism is enabled.
32K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address: 00:09:E8:1B:10:80
Motherboard assembly number: 73-5700-08
Power supply part number: 34-0966-02
Motherboard serial number: CAT062200N8
Power supply serial number: LIT061900GV
Model revision number: C0
Motherboard revision number: B0
Model number: WS-C3550-24-SMI
System serial number: CAT0622X0F7
Configuration register is 0x10F


c3550#sh vtp st
VTP Version                     : 2
Configuration Revision          : 33
Maximum VLANs supported locally : 1005
Number of existing VLANs        : 14
VTP Operating Mode              : Client
VTP Domain Name                 : ad
VTP Pruning Mode                : Disabled
VTP V2 Mode                     : Enabled
VTP Traps Generation            : Disabled
MD5 digest                      : 0x7B 0x6A 0x91 0x49 0x8F 0x4B 0x7E 0x55
Configuration last modified by 172.16.1.2 at 1-21-03 20:50:58
Local updater ID is 172.16.1.3 on interface Vl1 (lowest numbered VLAN interf)
----------------------- end 3550 ---------------------------------



----------------------- 3500xl -----------------------------------
c3500xl#sh ver
Cisco Internetwork Operating System Software
IOS (tm) C3500XL Software (C3500XL-C3H2S-M), Version 12.0(5.2)XU, MAINTENANCE IE
Copyright (c) 1986-2000 by cisco Systems, Inc.
Compiled Mon 17-Jul-00 18:29 by ayounes
Image text-base: 0x00003000, data-base: 0x00301F3C

ROM: Bootstrap program is C3500XL boot loader

c3500xl uptime is 17 hours, 0 minutes
System returned to ROM by reload
System image file is "flash:c3500XL-c3h2s-mz-120.5.2-XU-.bin"


cisco WS-C3548-XL (PowerPC403) processor (revision 0x01) with 16384K/1024K byte.
Processor board ID FAB0532P1TP, with hardware revision 0x00
Last reset from warm-reset

Processor is running Enterprise Edition Software
Cluster command switch capable
Cluster member switch capable
48 FastEthernet/IEEE 802.3 interface(s)
2 Gigabit Ethernet/IEEE 802.3 interface(s)

32K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address: 00:07:0E:C0:D5:00
Motherboard assembly number: 73-3903-08
Power supply part number: 34-0971-01
Motherboard serial number: FAB0532B0H6
Power supply serial number: APQ05290151
Model revision number: A0
Motherboard revision number: C0
Model number: WS-C3548-XL-EN
System serial number: FAB0532P1TP
Configuration register is 0xF


c3500xl#sh vtp st
VTP Version                     : 2
Configuration Revision          : 1
Maximum VLANs supported locally : 254
Number of existing VLANs        : 5
VTP Operating Mode              : Client
VTP Domain Name                 : ad
VTP Pruning Mode                : Disabled
VTP V2 Mode                     : Enabled
VTP Traps Generation            : Disabled
MD5 digest                      : 0x10 0xB8 0xD8 0xA1 0xC6 0x60 0xCA 0x9F
Configuration last modified by 172.16.1.4 at 3-1-93 00:17:49
----------------------- end 3500xl -------------------------------
								---------------------------------------
								Re: VTP
								 (BOJIKA@pisem.net) [19 May 2004 14:56:03]
								
								   vtp  c3500xl ?
								---------------------------------------
								Re: VTP
								 (dchernyatin@yug.sibnefteprovod.ru) [19 May 2004 15:50:05]
								
								   ...
								---------------------------------------
								Re: VTP
								 (BOJIKA@pisem.net) [19 May 2004 16:00:38]
								
								   
MD5 digest : 0x10 0xB8 0xD8 0xA1 0xC6 0x60 0xCA 0x9F
								---------------------------------------
								Re: VTP
								 (dchernyatin@yug.sibnefteprovod.ru) [19 May 2004 16:39:36]
								
								     ,  4507  3500XL.

   -    !

P.S. ,     3550  3500XL,    3500XL    VTP-   ...
								---------------------------------------
								Re: VTP
								renat () [27 May 2004 14:51:40]
								
								VTP     
   vlan  
    3500XL  2900XL   4507    
  VTP   
								---------------------------------------
								Re: VTP
								 (dchernyatin@yug.sibnefteprovod.ru) [27 May 2004 16:19:40]
								
								.

   3550    VTP- 4507,    ?
								---------------------------------------
								Re: VTP
								 (BOJIKA@pisem.net) [27 May 2004 16:47:01]
								
								autonegotiation...

sh int trunk
						
						=======================================
						:  2950  3750G-12S (  ?)
						=======================================
						SaX (sax666@mail.ru) [18 May 2004 09:48:13]
						
						  2950  RJ45    3750G-12S      SFP  ....     ?...     ()?...,        .....
								---------------------------------------
								Re:  2950  3750G-12S (  ?)
								 (BOJIKA@pisem.net) [18 May 2004 20:46:40]
								
								 ....
								---------------------------------------
								Re:  2950  3750G-12S (  ?)
								SaX (sax666@mail.ru) [19 May 2004 11:16:43]
								
								    ?.....        ?.....     -    ,  -   100- ....(
								---------------------------------------
								Re:  2950  3750G-12S (  ?)
								 (BOJIKA@pisem.net) [19 May 2004 12:04:42]
								
								http://www.cisco.com/univercd/cc/td/doc/product/lan/c2900xl/1000gbic/instnote.htm#60551
								---------------------------------------
								Re:  2950  3750G-12S (  ?)
								SaX (sax666@mail.ru) [20 May 2004 10:55:21]
								
								...)
								---------------------------------------
								Re:  2950  3750G-12S (  ?)
								 () [26 May 2004 14:01:34]
								
								 :)
        ( ).   ,   .
   /     ,    - .  , ,    ,        .
						
						=======================================
						: arp inspection on Catalyst 2950
						=======================================
						Yuldash (yuldash@hotmail.com) [14 May 2004 11:13:37]
						
						       ...
,     -        arp inpspection    2950, 3550,   ,      6500, 4500?

   12.1(19)  dhcp snooping,   arp inspection      ...

  ?
								---------------------------------------
								Re: arp inspection on Catalyst 2950
								 (BOJIKA@pisem.net) [14 May 2004 12:00:13]
								
								   ...
 ,   
								---------------------------------------
								Re: arp inspection on Catalyst 2950
								Yuldash (yuldash@hotmail.com) [14 May 2004 13:18:01]
								
								   , - :)
  SAFE  "" :)
    IOS  6500 ...
(http://www.cisco.com/en/US/netsol/ns340/ns394/ns171/ns128/networking_solutions_white_paper09186a008014870f.shtml#wp1002312):
The latter can be achieved by using a new feature called ARP Inspection, available first in CatOS 7.5 on the Cisco Catalyst 6500 Supervisor Engine II and 
a little later also in the Cisco IOS Software for the Cisco 
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Catalyst switches.
^^^^^^^^^^^^^^^^^^^^^^^^
								---------------------------------------
								Re: arp inspection on Catalyst 2950
								Pavel Rodionov (pavel.rodionov@snt.ua) [14 May 2004 14:34:36]
								
								     4500  6500 ...
								---------------------------------------
								Re: arp inspection on Catalyst 2950
								UncleShi (uncleShi@pisem.net) [22 May 2004 13:46:14]
								
								>      4500  6500 ...
    ...
http://www.cisco.com/en/US/products/sw/iosswrel/ps5012/prod_bulletin0900aecd800f7266.html

NEW FEATURES IN CISCO IOS SOFTWARE RELEASE 12.2(20)SE -> Cisco Catalyst 3750-EMI -> Dynamic ARP Inspection !!!

       ???
								---------------------------------------
								Re: arp inspection on Catalyst 2950
								Pavel Rodionov (pavel.rodionov@snt.ua) [24 May 2004 10:55:56]
								
								. ,         3750.
  ,  . 
 2950    .
						
						=======================================
						: Cisco 3550 -     .
						=======================================
						NoIZz (admin@farbis.ru) [12 May 2004 20:07:21]
						
						  Cisco'!

: Cisco 3550-24-SMI.  23   24    NetGear,      ,    - .   1    FreeBSD.   G1  G2    (DHCP/DNS/SQL  ).

:        2-10  11-24     1, G1  G2,        ( 2-10      11-24).  .

 .
								---------------------------------------
								Re: Cisco 3550 -     .
								renat () [13 May 2004 14:56:09]
								
								 acl       SMI  
								---------------------------------------
								Re: Cisco 3550 -     .
								NoIZz (admin@farbis.ru) [13 May 2004 16:27:45]
								
								 SMI ACL ,    -         ACL'.    VLAN' -   - ...
								---------------------------------------
								Re: Cisco 3550 -     .
								unopened (unopened@mail.ru) [14 May 2004 12:51:09]
								
								2-10  vlan, 11-24 , g1 g2 - 
  acl  vlan access-map...
								---------------------------------------
								Re: Cisco 3550 -     .
								 (BOJIKA@pisem.net) [14 May 2004 13:36:15]
								
								>   Cisco'!
> 
> : Cisco 3550-24-SMI.  23   24    NetGear, 
>     ,    - .   1    FreeBSD.
>   G1  G2    (DHCP/DNS/SQL  ).
> 
> :        2-10  11-24     1, G1  G2,   
>     ( 2-10      11-24).  .
> 
>  .
 3550   private vlan. (switchport protected)

  ,    3- ...
								---------------------------------------
								Re: Cisco 3550 -     .
								NoIZz (admin@farbis.ru) [14 May 2004 13:39:52]
								
								    VLAN Access Map.
.
								---------------------------------------
								Re: Cisco 3550 -     .
								 () [14 May 2004 17:05:06]
								
								 2-  24-  port protected?
								---------------------------------------
								Re: Cisco 3550 -     .
								 (BOJIKA@pisem.net) [14 May 2004 17:45:56]
								
								>  2-  24-  port protected?
 ....
						
						=======================================
						: Cisco Catalyst 2950 -   
						=======================================
						FireWall (firewall@siberit.ru) [05 May 2004 11:17:33]
						
						  ! 

  :

 ,                ,:

Initializing Flash...
flashfs[0]: 31 files, 3 directories
flashfs[0]: 0 orphaned files, 0 orphaned directories
flashfs[0]: Total bytes: 7741440
flashfs[0]: Bytes used: 1743360
flashfs[0]: Bytes available: 5998080
flashfs[0]: flashfs fsck took 5 seconds.
...done initializing flash.
Boot Sector Filesystem (bs:) installed, fsid: 3
Parameter Block Filesystem (pb:) installed, fsid: 4
Loading ""...: permission denied

Error loading ""

Interrupt within 5 seconds to abort boot process.
Boot process failed...

   ,  ...    .        ?
								---------------------------------------
								Re: Cisco Catalyst 2950 -   
								 (wuss@parkline.ru) [05 May 2004 11:53:00]
								
								http://www.cisco.com/univercd/cc/td/doc/product/lan/c2900xl/29_35wc3/sc/swgtrbl.htm#13149
								---------------------------------------
								Re: Cisco Catalyst 2950 -   
								FireWall (firewall@siberit.ru) [12 May 2004 07:26:31]
								
								  IOS        :

Loading "flash:"...flash:: no such file or directory

Error loading "flash:"

Interrupt within 5 seconds to abort boot process.

  ?  
								---------------------------------------
								Re: Cisco Catalyst 2950 -   
								 (BOJIKA@pisem.net) [12 May 2004 22:28:58]
								
								   IOS     Xmodem    ...
								---------------------------------------
								Re: Cisco Catalyst 2950 -   
								FireWall (firewall@siberit.ru) [13 May 2004 03:59:40]
								
								   ,    tftp,              .

      

Loading "c2950-i6q4l2-mz.121-20.EA1.bin"...c2950-i6q4l2-mz.121-20.EA1.bin: permission denied

Error loading "c2950-i6q4l2-mz.121-20.EA1.bin"

Interrupt within 5 seconds to abort boot process.
Loading "flash:/c2950-i6q4l2-mz.121-11.EA1.bin"...

     -((
								---------------------------------------
								   "show boot". , ,  , ->
								  (igorx@iriit.irk.ru) [13 May 2004 05:16:50]
								
								.  IOS'     . :

BOOT path-list: flash:c2950-i6q4l2-mz.121-20.EA1.bin

     IOS :

Switch(config)# boot system flash:c2950-i6q4l2-mz.121-20.EA1.bin
								---------------------------------------
								Re:    "show boot". , ,  , ->
								FireWall (firewall@siberit.ru) [13 May 2004 05:47:07]
								
								switch#show boot
BOOT path-list:       c2950-i6q4l2-mz.121-20.EA1.bin
Config file:          flash:config.text
Private Config file:  flash:private-config.text
Enable Break:         no
Manual Boot:          no
HELPER path-list:
NVRAM/Config file
      buffer size:    32768
								---------------------------------------
								Re:    "show boot". , ,  , ->
								FireWall (firewall@siberit.ru) [13 May 2004 08:05:33]
								
								    ,    ,   .

switch#show boot
BOOT path-list:       flash:c2950-i6q4l2-mz.121-11.EA1.bin
Config file:          flash:config.text
Private Config file:  flash:private-config.text

   :  ,   ,     !
								---------------------------------------
								Re:   
								Alexandr () [23 Jun 2004 16:57:21]
								
								   
c2950-i6q412-mz.121-14.EA1a.bin
						
						=======================================
						: Radius/Tacacs+
						=======================================
						yorik (yorik_pankovitch@tut.by) [03 May 2004 16:59:17]
						
						.
 ,    (  trial)   -   Windows.
 .
						
						=======================================
						:  7206-Cat2950-Cat3550XL...   ?
						=======================================
						Tiger (notify@intal.uz) [30 Apr 2004 19:10:21]
						
						  .
    7206-Cat2950-Cat3550XL. 2950     VLAN-  3550.    VLAN1    .  :

7206:

interface GigabitEthernet0/2
 no ip address
 no ip proxy-arp
 ip route-cache policy
 ip route-cache flow
 duplex auto
 speed auto
 media-type rj45
 no negotiation auto
 no cdp enable
!
interface GigabitEthernet0/2.1
 description Catalyst 2950-12
 encapsulation dot1Q 1 native
 ip address 172.16.20.1 255.255.255.248
 no ip proxy-arp

interface GigabitEthernet0/2.2
 description lient
 encapsulation dot1Q 2
 ip address 172.16.1.1 255.255.255.252
 no ip proxy-arp

Catalyst2950:

Current configuration : 1332 bytes
!
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname Catalyst2950-Monitor
!
aaa new-model
aaa authentication login default local
enable password 7
!
username cisco password 7
ip subnet-zero
!
spanning-tree mode pvst
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
!
!
interface FastEthernet0/1
 switchport mode trunk
 no ip address
!
interface FastEthernet0/2
 switchport mode trunk
 no ip address
!
interface FastEthernet0/3
 no ip address
......
interface FastEthernet0/12
 no ip address

interface Vlan1
 description MANAGEMENT
 ip address 172.16.20.2 255.255.255.248
 no ip route-cache
!
ip default-gateway 172.16.20.2
no ip http server
!
!
line con 0
.....

Catalyst 3550XL:

Current configuration : 4000 bytes
!
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname Catalyst3550-Access
!
aaa new-model
aaa authentication login default local
enable password 7
!
username cisco password 7
ip subnet-zero
ip routing
!
!
spanning-tree mode pvst
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
!
!
interface FastEthernet0/1
 description Management
 switchport trunk encapsulation dot1q
 switchport mode trunk
!
interface FastEthernet0/2
 switchport mode dynamic desirable
......
interface FastEthernet0/17
 description Connection to Client
 switchport access vlan 2
 switchport mode access
 no ip address
 no cdp enable
.......
interface FastEthernet0/48
 switchport mode dynamic desirable

interface Vlan1
 description Management
 ip address 172.16.20.3 255.255.255.248
!
ip default-gateway 172.16.20.1
ip classless
no ip http server
!
!
!
line con 0

  7206   GE 0/2.2   ,    FE0/17 Catalyst3550.
    .
 .
								---------------------------------------
								Re:  7206-Cat2950-Cat3550XL...   ?
								Egres () [05 May 2004 06:32:06]
								
								   VTP ??
								---------------------------------------
								Re:  7206-Cat2950-Cat3550XL...   ?
								renat () [07 May 2004 16:44:20]
								
								http://cisco.com/en/US/products/hw/switches/ps5023/products_configuration_example09186a00801cc828.shtml
						
						=======================================
						: Cisco MIBs
						=======================================
						Alexander () [26 Apr 2004 17:24:18]
						
						    url     MIB-   ,
   cisco.com   ,  -   
...   :) MIB    hp openviev.
								---------------------------------------
								Re: Cisco MIBs
								  (igorx@iriit.irk.ru) [27 Apr 2004 05:35:53]
								
								http://tools.cisco.com/ITDIT/MIBS/servlet/index
 ,     -    .
								---------------------------------------
								Re: Cisco MIBs
								Pavel Rodionov (pavel.rodionov@snt.ua) [27 Apr 2004 09:49:53]
								
								ftp://ftp.cisco.com/pub/mibs/v2/
								---------------------------------------
								Re: Cisco MIBs
								Alexander () [27 Apr 2004 11:30:43]
								
								  !  :)
						
						=======================================
						:   errdisable
						=======================================
						Marlboro () [16 Apr 2004 07:20:16]
						
						  ! 
 cisce3550    errdisable. 
 . (no errdisable detect cause all) 
    ,  . 
    connect. 
  errdisable detect cause loopback,    errdisable. 
    loopback,        . 
IOS 12.1(13)EA1c
								---------------------------------------
								Re:   errdisable
								Pavel Rodionov (pavel.rodionov@snt.ua) [16 Apr 2004 10:24:22]
								
								 loopback   .    ,    .             .   workaround:  . keepalive  ,   no errdisable detect cause loopback.
								---------------------------------------
								Re:   errdisable
								Marlboro () [16 Apr 2004 10:39:42]
								
								,    .
     , 
 .     Zelax,  G.703  Ethernet (10, half-duplex).  .
								---------------------------------------
								Re:   errdisable
								Pavel Rodionov (pavel.rodionov@snt.ua) [16 Apr 2004 12:07:08]
								
								,  .   errdisable,   keepalive.
								---------------------------------------
								Re:   errdisable
								 (BOJIKA@pisem.net) [16 Apr 2004 18:03:55]
								
								 ,   ,  case...
   ,     ..
						
						=======================================
						: Cisco 3750 VLAN 2 IP
						=======================================
						gunman (gunman77@mail.ru) [15 Apr 2004 16:09:32]
						
						   2 IP   VLAN ?
								---------------------------------------
								Re: Cisco 3750 VLAN 2 IP
								renat () [15 Apr 2004 16:36:31]
								
								 
 ,  
    LoopBack ,   3750   
								---------------------------------------
								Re: Cisco 3750 VLAN 2 IP
								gunman (gunman77@mail.ru) [15 Apr 2004 17:24:59]
								
								>  
>  ,  
>     LoopBack ,   3750   

    VLAN  IP-     3750. ..       ,     .      .
								---------------------------------------
								Re: Cisco 3750 VLAN 2 IP
								 (BOJIKA@pisem.net) [15 Apr 2004 18:38:43]
								
								conf t
int vl XX
ip add XX.XX.XX.XX YY.YY.YY.YY secondary
end
wr
								---------------------------------------
								Re: Cisco 3750 VLAN 2 IP
								renat () [16 Apr 2004 12:35:03]
								
								 ip  
2 ip        
    
VLAN       
								---------------------------------------
								Re: Cisco 3750 VLAN 2 IP
								gunman (gunman77@mail.ru) [16 Apr 2004 14:12:13]
								
								> conf t
> int vl XX
> ip add XX.XX.XX.XX YY.YY.YY.YY secondary
> end
> wr
  .      ,       IP    ,    .

TO Renat
     Vlane          IP ,    ,           .
								---------------------------------------
								Re: Cisco 3750 VLAN 2 IP
								NoIZz (admin@noizz.ru) [29 May 2004 02:38:25]
								
								> > conf t
> > int vl XX
> > ip add XX.XX.XX.XX YY.YY.YY.YY secondary
> > end
> > wr

    secondary ????
								---------------------------------------
								Re: Cisco 3750 VLAN 2 IP
								Gunman () [31 May 2004 10:28:00]
								
								> > > conf t
> > > int vl XX
> > > ip add XX.XX.XX.XX YY.YY.YY.YY secondary
> > > end
> > > wr
> 
>     secondary ????
  ,    no ,      secondary 
no ip add XX.XX.XX.XX YY.YY.YY.YY secondary
						
						=======================================
						:   int vlan*  catalyst 3512XL
						=======================================
						capt () [14 Apr 2004 10:00:53]
						
						 12.0(5)WC5.
vtp , vlan'  vtp .

interface vlan5 admin-ly down.

 conf t -> int vlan5 -> no shutdown,
 .  vtp  vlan' -   . 
int vlan1 ,   vlan- .

 ?

     .    
120.5.1-XP
								---------------------------------------
								Re:   int vlan*  catalyst 3512XL
								Alexander () [14 Apr 2004 10:10:59]
								
								>      .    
> 120.5.1-XP
 ?
  UP     int vlan - ,  management.
								---------------------------------------
								Re:   int vlan*  catalyst 3512XL
								capt () [14 Apr 2004 15:51:26]
								
								> >      .    
> > 120.5.1-XP
>  ?
>   UP     int vlan - ,  management.

  management vlan?   19XX?

   3500XL:

#sh ver
Cisco Internetwork Operating System Software
IOS (tm) C3500XL Software (C3500XL-C3H2S-M), Version 12.0(5)WC3b, RELEASE SOFTWARE (fc1)

krab199-sw#sh ip int br
Interface                  IP-Address      OK? Method Status                Protocol
VLAN1                      10.0.1.202      YES NVRAM  up                    down
VLAN3                      10.1.2.253      YES NVRAM  up                    up
FastEthernet0/1            unassigned      YES unset  up                    up


  ,     :
#sh ver
Cisco Internetwork Operating System Software
IOS (tm) C3500xl Software (C3500xl-C3H2S-M), Version 12.0(5)WC5, RELEASE SOFTWARE (fc1)
#sh ip int br
Interface                  IP-Address      OK? Method Status                Protocol
VLAN1                      80.91.192.38    YES NVRAM  up                    up
VLAN5                      10.0.3.253      YES NVRAM  administratively down down
FastEthernet0/1            unassigned      YES unset  down                  down


  administratively down    .
								---------------------------------------
								Re:   int vlan*  catalyst 3512XL
								Igor Suvorov () [14 Apr 2004 16:16:39]
								
								conf t
int vlan 5
managment

  int vlan 1    down,
 int vlan 5  .
								---------------------------------------
								Re:   int vlan*  catalyst 3512XL
								capt () [14 Apr 2004 16:27:51]
								
								    :)
!
						
						=======================================
						: 1000BaseT GBIC  3550
						=======================================
						 (alex@inflex.ru) [09 Apr 2004 14:06:34]
						
						,
      
GBIC 1000BaseT  Catalyst 3550?
,   ,  
 :-)
								---------------------------------------
								Re: 1000BaseT GBIC  3550
								MaximP (max_p@mail333.com) [12 Apr 2004 14:38:15]
								
								 Cisco -    ,       .  GBIC        2  Luminet  Agilent, -    IBM, Nortel    ,  .        ,    .
						
						=======================================
						: ""   catalyst 3524
						=======================================
						gosha () [08 Apr 2004 18:20:11]
						
						  ,     ,   5    4   20,   ?
								---------------------------------------
								Re: ""   catalyst 3524
								 (BOJIKA@pisem.net) [08 Apr 2004 23:22:39]
								
								  ?
								---------------------------------------
								Re:
								gosha () [09 Apr 2004 10:00:41]
								
								     ,      220.
								---------------------------------------
								Re: Re:
								Vladimir (chvm@eastcomm.ru) [09 Apr 2004 14:31:25]
								
								        !
    ,   .        ,    
     /,    , 
  (   ),  ,   ,    .         , ..
         ,
   .   2   3  , 
,    ,  ,       ,  
, 2   .
						
						=======================================
						: 2950  
						=======================================
						sf () [08 Apr 2004 13:45:37]
						
						 Catalyst 2950-12.
    .

   :

C2950 Boot Loader (C2950-HBOOT-M) Version 12.1(11r)EA1
WS-C2950-12 starting...
Base ethernet MAC Address 00:0b:be:02:24:00
Xmodem file system is available.

The system has been interrupted prior to initializing the
flash filesystem.  The following commands will initialize
the flash filesystem, and finish loading the operating
system software:

       flash_init
       loader_helper
       boot
-------

 ,   flash_init  boot  
    .     
 :(

, ,  ?

 
								---------------------------------------
								Re: 2950  
								Vladimir (chvm@eastcomm.ru) [08 Apr 2004 14:38:40]
								
								            ,   ,    ...
  (  ),      ...
								---------------------------------------
								Re: 2950  
								Alexander () [08 Apr 2004 14:59:56]
								
								,     -      ,  erase flash:
,  format flash:,   ,  .
								---------------------------------------
								Re: 2950  
								Alexander () [08 Apr 2004 15:01:48]
								
								      ?
,       ?   ?
								---------------------------------------
								Re: 2950  
								sf () [08 Apr 2004 15:50:59]
								
								Sorry,  !!

,   Mode :))

,  ,  !!
						
						=======================================
						:  Etherchannel  2950  
						=======================================
						LDS (lukovkin@stormbv.com) [07 Apr 2004 18:09:25]
						
						  Etherchannel  2950  2-   Intel MT 1000 8492.     FEC 802.3ad Static Link Aggregation  IEEE 802.3ad Dynamic Link Aggregation.   Cisco  2   1 Etherchannel,   PAGP,    LACP.

interface FastEthernet0/11
 speed 100
 duplex full
 channel-group 1 mode desirable
!
interface FastEthernet0/12
 speed 100
 duplex full
 channel-group 1 mode desirable

  PAGP.

 :
Number of channel-groups in use: 1
Number of aggregators:           1

Group  Port-channel  Protocol    Ports
------+-------------+-----------+-----------------------------------------------
1      Po1(SD)         PAgP      Fa0/11(I)   Fa0/12(I)

  sh pagp 1 counters,        ,   -  .

  , ,  ,     ,   ,  -    Cisco.
								---------------------------------------
								Re:  Etherchannel  2950  
								LDS (lukovkin@stormbv.com) [07 Apr 2004 20:44:21]
								
								,  .
   ,  IEEE 802.3ad Dynamic Link Aggregation,  Cisco - LACP,  .
						
						=======================================
						:    -   (+)
						=======================================
						qwerty () [06 Apr 2004 17:17:56]
						
						    
   ,    .
 - mac-address-table notification         

  ?
								---------------------------------------
								Re:    -   (+)
								Catalyst () [06 Apr 2004 20:18:56]
								
								port security action trap
								---------------------------------------
								Re:    -   (+)
								qwerty () [20 Apr 2004 10:23:47]
								
								
						
						=======================================
						: Catalyst & tcpdump
						=======================================
						Alex (alex@uatele.com) [06 Apr 2004 14:35:22]
						
						 ,

,     :
 Catalyst 2950      (Linux RH)
 Linux'     promisc mode  tcpdump'    (http, pop3, smtp, icq...)      (  .   ).    -        ,     ,     . 
   ,   ?    . .


sh ver
Cisco Internetwork Operating System Software 
IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(20)EA1, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2004 by cisco Systems, Inc.
Compiled Wed 04-Feb-04 21:21 by yenanh
Image text-base: 0x80010000, data-base: 0x805A8000

interface FastEthernet0/9
 switchport access vlan 17
 switchport mode access

sh int fast 0/9
FastEthernet0/9 is up, line protocol is up (connected)
  Hardware is Fast Ethernet, address is 0009.b7cb.6809 (bia 0009.b7cb.6809)
  MTU 1500 bytes, BW 100000 Kbit, DLY 1000 usec, 
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 100Mb/s
  input flow-control is unsupported output flow-control is unsupported 
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output 00:00:00, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 1000 bits/sec, 1 packets/sec
     1420534 packets input, 93568518 bytes, 0 no buffer
     Received 865 broadcasts (0 multicast)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 0 multicast, 0 pause input
     0 input packets with dribble condition detected
     2853563 packets output, 3135530139 bytes, 0 underruns
     0 output errors, 0 collisions, 2 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier, 0 PAUSE output
     0 output buffer failures, 0 output buffers swapped out
								---------------------------------------
								Re: Catalyst & tcpdump
								  (igorx@iriit.irk.ru) [07 Apr 2004 06:39:16]
								
								        ?
   Dump.
								---------------------------------------
								Re: Catalyst & tcpdump
								Alex (alex@uatele.com) [07 Apr 2004 10:51:42]
								
								 ,  "" ,  zz.aa.165.52/26
  :
 
09:21:27.535350 212.42.65.68.http > zz.aa.166.130.29489: . 4381:5841(1460) ack 1747 win 58400 (DF)
09:21:27.535354 212.42.65.68.http > zz.aa.166.130.29489: P 5841:6112(271) ack 1747 win 58400 (DF)

09:21:33.281586 zz.aa.160.130.domain > zz.aa.165.45.10022:  5 1/4/2 A 212.9.224.5 (178) (DF)

09:21:33.289598 213.186.192.234.pop3 > zz.aa.165.45.10023: S 335912380:335912380(0) ack 907867114 win 57344 <mss 1460> (DF)

09:21:33.581341 arp who-has zz.aa.163.176 tell zz.aa.163.129

09:38:51.954211 24.44.123.208.1284 > zz.aa.165.11.ms-sql-m:

09:39:44.492768 212.109.32.250.2092 > zz.aa.165.6.smtp: S 197902320:197902320(0) win 65535 <mss 1460> (DF)

  http > zz.aa.166.130 ,  .
  MAC'a   (   Zyxel IES-3000  ADSL )  IP  ( )      .  ,  -  MAC'. :    "-"?
  ,       ?
								---------------------------------------
								Re: Catalyst & tcpdump
								  (igorx@iriit.irk.ru) [08 Apr 2004 06:54:16]
								
								  :
int fa0/9
swi mode access
swi port
swi acc vla 17
swi port max 1
swi port viola shut
swi port mac-addr <mac   ,    >
spanning-tree portfast
no cdp enable

  , ,       .   , .
						
						=======================================
						: 
						=======================================
						 () [05 Apr 2004 11:47:19]
						
						 .
   ,          
   .   ip-  dialup ,    ( ).   ipsoft billing,    - .       ,         .
 .
						
						=======================================
						: DSCP COS  IP recendence
						=======================================
						Maks () [02 Apr 2004 13:30:56]
						
						  .       SONY PCS 1P.        precendence.    precendence 5. 
   Cat3550.         3550   precend 0 :(((

Extended IP access list CONFERENCE
    10 permit udp host 10.0.64.55 host 10.0.74.3 precedence routine (54000 matches)
    20 permit udp host 10.0.64.55 host 10.0.74.3 precedence priority
    30 permit udp host 10.0.64.55 host 10.0.74.3 precedence immediate
    40 permit udp host 10.0.64.55 host 10.0.74.3 precedence flash
    50 permit udp host 10.0.64.55 host 10.0.74.3 precedence flash-override
    60 permit udp host 10.0.64.55 host 10.0.74.3 precedence critical
    70 permit udp host 10.0.64.55 host 10.0.74.3 precedence internet
    80 permit udp host 10.0.64.55 host 10.0.74.3 precedence network


 mls qos trust cos,   ,     precedence 0. 

interface FastEthernet0/17
 description To SONY
 switchport access vlan 20
 no ip address
 mls qos trust cos
 no cdp enable

CATALIST_3550#sh mls qos interface f0/17
FastEthernet0/17
trust state: trust cos
trust mode: trust cos
COS override: dis
default COS: 0
DSCP Mutation Map: Default DSCP Mutation Map
trust device: none


  mls qos cos 5,    precendence 5,       ,             ip precendece. 

interface FastEthernet0/17
 description To Bocharov IP-phone
 switchport access vlan 20
 no ip address
 mls qos cos 5
 mls qos trust cos
 no cdp enable

CATALIST_3550#sh mls qos interface f0/17
FastEthernet0/17
trust state: trust cos
trust mode: trust cos
COS override: dis
default COS: 5
DSCP Mutation Map: Default DSCP Mutation Map
trust device: none


           - ?  , .
.
						
						=======================================
						:   access-list   2950-12?
						=======================================
						nevian () [01 Apr 2004 18:46:43]
						
						  :
 vlan - 5  7

  ,   5  7  ,  5  7    IP  ()   

 extended access-list,     :(   2950-24  
								---------------------------------------
								Re:   access-list   2950-12?
								 (BOJIKA@pisem.net) [01 Apr 2004 21:51:50]
								
								   router'e
								---------------------------------------
								Re:   access-list   2950-12?
								nevian () [02 Apr 2004 09:52:37]
								
								  ,     ?
      3550,  ..
								---------------------------------------
								Re:   access-list   2950-12?
								Alexander () [02 Apr 2004 16:35:41]
								
								>   ,     ?
?       .

>       3550,  ..
,     .
     .
						
						=======================================
						:    Tunnels  Vlan  Catalist 2950
						=======================================
						Vladimir (chvm@eastcomm.ru) [30 Mar 2004 15:41:20]
						
						  3550  :
       .
 2950   (  ?)   ?
..   Vlan     (  )        !
     ,     ,   ,             ,   2-,  2- 3550    2950 (   )?
   ?
 ,      ,
.
								---------------------------------------
								Re:    Tunnels  Vlan  Catalist 2950
								Pavel Rodionov (pavel.rodionov@snt.ua) [30 Mar 2004 16:26:59]
								
								   ,    - ,     ,    DVMRP .     ,         .     gre    vlan,    .
								---------------------------------------
								Re:    Tunnels  Vlan  Catalist 2950
								Vladimir (chvm@eastcomm.ru) [31 Mar 2004 03:13:49]
								
								,    ,       VLAN. 
    ,    ?
								---------------------------------------
								Re:    Tunnels  Vlan  Catalist 2950
								Pavel Rodionov (pavel.rodionov@snt.ua) [31 Mar 2004 09:51:26]
								
								      vlan.    L3  ,     .
								---------------------------------------
								Re:    Tunnels  Vlan  Catalist 2950
								 (BOJIKA@pisem.net) [31 Mar 2004 11:26:02]
								
								,    ....
						
						=======================================
						:   broadcasting
						=======================================
						 (triton9@mail.ru) [29 Mar 2004 12:08:36]
						
						  broadcast-    VLAN,     bootp,  tftp.

    :
interface FastEthernet0/16
 switchport access vlan 10
!
interface FastEthernet0/17
 switchport access vlan 10

          .
 .    . :( 
 , .

ps: 2924XL
								---------------------------------------
								Re:   broadcasting
								Pavel Rodionov (pavel.rodionov@snt.ua) [29 Mar 2004 12:38:11]
								
								    ,       ? 
    .
								---------------------------------------
								Re:   broadcasting
								 (triton9@mail.ru) [29 Mar 2004 13:26:48]
								
								  bootp.

            .    Cisco ,    VLAN -   ,    catalyst'  ,    2948G-L3,     . 
  - ,  storm control,   .

 .
.
								---------------------------------------
								 tcpdump  dhcp-server'   ? (-)
								Alexander () [29 Mar 2004 15:54:29]
								
								
								---------------------------------------
								Re:   broadcasting
								  (igorx@iriit.irk.ru) [31 Mar 2004 06:56:27]
								
								  spanning tree portfast         ,  , ..     .      DHCP    46-51  ( win98, w2k      ).   DHCP      DHCP  -    .

    ,     :

interface FastEthernet0/16 
 switchport mode access
 switchport port
 switchport access vlan 10 
 spanning-tree portfast
 no cdp enable
						
						=======================================
						:  arp proxy
						=======================================
						 () [24 Mar 2004 15:21:23]
						
						   ,    
client1-2950(1)-3550(1)-3550(2)-2950(2)-client2,3
     1  2    vlan, ip     . .. 1  ,    1  2     ip,  proxy arp.   1  2      ,   ip  , ..  access-list    ip route.     ,      ?    1          ,   arp   ,   -?

 ip  
1 - 192.168.1.2 netmask 255.255.255.0 default 192.168.1.1 
2 - 192.168.1.3 netmask 255.255.255.0 default 192.168.1.1 
3 - 192.168.2.2 netmask 255.255.255.0 default 192.168.2.1 

    (proxy-arp     )
---------------------------- 
2950(1) 
interface FastEthernet0/1 
description 3550(1) 
switchport mode trunk 
no ip address 
! 
interface FastEthernet0/2 
description client1 
switchport access vlan 10 
switchport mode access 
no ip address 
---------------------------- 
2950(2) 
interface FastEthernet0/1 
description 3550(2) 
switchport mode trunk 
no ip address 
! 
interface FastEthernet0/2 
description client2 
switchport access vlan 20 
switchport mode access 
no ip address 

interface FastEthernet0/3 
description client3 
switchport access vlan 30 
switchport mode access 
no ip address 
---------------------------- 
3550(1) 
interface FastEthernet0/1 
description 3550(2) 
switchport mode trunk 
no ip address 
! 
interface FastEthernet0/2 
description 2950(1) 
switchport mode trunk 
no ip address 
---------------------------- 
3550(2) 
interface FastEthernet0/1 
description 3550(1) 
switchport mode trunk 
no ip address 
! 
interface FastEthernet0/2 
description 2950(2) 
switchport mode trunk 
no ip address 

interface Vlan100 
ip address 192.168.1.1 255.255.255.0 

interface Vlan10 
ip address 10.1.1.1 255.255.255.0 
ip access-group 10 in 

interface Vlan20 
ip address 10.1.2.1 255.255.255.0 
ip access-group 20 in 

interface Vlan30 
ip address 192.168.2.1 255.255.255.0 
ip access-group 30 in 

ip route 192.168.1.2 255.255.255.255 Vlan10 
ip route 192.168.1.3 255.255.255.255 Vlan20 

access-list 10 permit 192.168.1.2 
access-list 20 permit 192.168.1.3 
access-list 30 permit 192.168.2.2
						
						=======================================
						: multi-access port  catalyst
						=======================================
						 . (kulagin@tornado.nsk.ru) [24 Mar 2004 08:06:43]
						
						, ,      
 :
  ,    
VLAN ( -    VLAN).    
    ,       
 VLAN.     
,          
VLAN.   ?
  ,

								---------------------------------------
								Re: multi-access port  catalyst
								 (BOJIKA@pisem.net) [24 Mar 2004 16:10:53]
								
								> , ,      
>  :
>   ,    
> VLAN ( -    VLAN).    
>     ,       
>  VLAN. 
 L3 switch 
3550 3560 3570

>     
> ,          
> VLAN.   ?
     ..
>   ,
> 
								---------------------------------------
								Re: multi-access port  catalyst
								 () [24 Mar 2004 17:25:12]
								
								> , ,      
>  :
>   ,    
> VLAN ( -    VLAN).    
>     ,       
>  VLAN.
      ?
>     
> ,          
> VLAN.   ?
>   ,
> 
								---------------------------------------
								 ...
								 . (kulagin@tornado.nsk.ru) [25 Mar 2004 06:09:53]
								
								   . , 
  .  ,  , 
 L3-     .
    . 
   .  MultiVlan  
      
 VLAN.  .  - 2900XL.
   (1900, 2900 series) MultiVlan  
.  L3     .
 .
								---------------------------------------
								Re:  ...
								Dmitry () [26 Mar 2004 17:34:06]
								
								 ,   2950    :(  ,    L3 !
						
						=======================================
						:   "Port N/N shutdown due to secure violation"!
						=======================================
						  (igorx@iriit.irk.ru) [22 Mar 2004 11:24:04]
						
						 ,   ,    shutdown  secure. ..       ,        ,    ,   ,           .  : 15 .   (    ,    ,    ,  , ATI 2500),        .       -   ,       -     .
    ,   .

WS-C5509 Software, Version McpSW: 6.4(8) NmpSW: 6.4(8)
Copyright (c) 1995-2004 by Cisco Systems
NMP S/W compiled on Jan  6 2004, 16:00:56
MCP S/W compiled on Jan 06 2004, 15:56:07

System Bootstrap Version: 5.1(2)

Hardware Version: 1.0  Model: WS-C5509  Serial #: 067525443

Mod Port Model      Serial #  Versions
--- ---- ---------- --------- -------------
1   0    WS-X5530   015557513 Hw : 3.4
                              Fw : 5.1(2)
                              Fw1: 4.4(1)
                              Sw : 6.4(8)
         WS-F5531   015558147 Hw : 2.0
2   12   WS-X5201R  015452742 Hw : 3.1
                              Fw : 4.3(1)
                              Sw : 6.4(8)
3   24   WS-X5225R  015132600 Hw : 3.3
                              Fw : 4.3(1)
                              Sw : 6.4(8)
5   36   WS-X5239   014576354 Hw : 1.1
                              Fw : 4.5(2)
                              Sw : 6.4(8)
7   36   WS-X5239   015426633 Hw : 1.1
                              Fw : 4.5(2)
                              Sw : 6.4(8)
9   36   WS-X5239   014579112 Hw : 1.1
                              Fw : 4.5(2)
                              Sw : 6.4(8)

       DRAM                    FLASH                   NVRAM
Module Total   Used    Free    Total   Used    Free    Total Used  Free
------ ------- ------- ------- ------- ------- ------- ----- ----- -----
1       65536K  22645K  42891K   8192K   6093K   2099K  512K  254K  258K

#errordetection
set errordetection inband enable
set errordetection memory enable
set errordetection portcounter enable
!
#mls
set mls enable ipx
set mls nde disable
!
#errdisable timeout
set errdisable-timeout interval 86400
!
# default port status is enable
!
#module 5 : 36-port 10/100BaseTX Ethernet
set vlan 100  5/1-36
set port trap       5/1-36  enable
set port name       5/1  k12.408.4.d.edu
........
set port security 5/1 enable age 0 maximum 1 shutdown 0 violation shutdown
........
set port security 5/1 00-0d-61-19-6a-b6
........
set cdp disable  5/1-36
set trunk 5/1  off negotiate 1-1005
........
set spantree portfast    5/1-36 enable
								---------------------------------------
								Re:   "Port N/N shutdown due to secure violation"!
								  (igorx@iriit.irk.ru) [27 Mar 2004 08:06:50]
								
								, . -   .

          -      IP  DHCP ( win98).            ().   ,     ,  port channel   , ..  !    off   !
, ,    ...
						
						=======================================
						:  / vlan  3750 (EMI)
						=======================================
						 () [20 Mar 2004 23:59:26]
						
						 Cat3750 (EMI),    vlan',    . 
   vlan,      ACL -      IP  .
     :           vlan',    vlan'a        . 
        ?
								---------------------------------------
								Re:  / vlan  3750 (EMI)
								Pavel Rodionov (pavel.rodionov@snt.ua) [22 Mar 2004 10:11:00]
								
								   stateful firewall    . 
      ,     udp      ,      permit tcp <source_ip> <dest_ip> established
						
						=======================================
						: VLAN123 is administratively down, line protocol is down
						=======================================
						Igor () [19 Mar 2004 14:29:31]
						
						 C3524-XL, IOS Version 12.0(5.4)WC(1)
 vlan:

vlan database
vlan 123 name TEST
apply
exit

 :
 int vlan123
 ip address 10.0.0.1 255.255.255.0

 sho int vlan123:
VLAN123 is administratively down, line protocol is down

  no shutdow   -  .
Show vlan     active.

show run int vlan123  :
interface VLAN123
 ip address 10.0.0.1 255.255.255.0
 no ip directed-broadcast
 no ip route-cache
 shutdown
end


Native VLAN   . VTP - transparent

     : 
int f0/1
switchport access vlan 123

 .

   .

.
								---------------------------------------
								Re: VLAN123 is administratively down, line protocol is down
								Ivan Dementiev (ivan@comptek.ru) [19 Mar 2004 14:34:13]
								
								int vlan 123
 management
								---------------------------------------
								Re: VLAN123 is administratively down, line protocol is down
								Igor () [19 Mar 2004 15:38:26]
								
								 . ,
     3550 -   ,
   .
						
						=======================================
						:    port-security  2950
						=======================================
						 () [18 Mar 2004 17:28:19]
						
						  -     SecureConfigured 
 SecureDynamic (   sh port-security address) ?  -      .    SecureDynamic     
         ,
   SecureConfigured -  .   -   
        
 -   ?              -    switchport port-security ; switchport port-security mac-address xxxx.xxxx.xxxx ; switchport port-security maximum 1
 ?         .
								---------------------------------------
								Re:    port-security  2950
								  (igorx@iriit.irk.ru) [22 Mar 2004 16:38:27]
								
								        ... -)
						
						=======================================
						: 3550  ipx
						=======================================
						sf () [18 Mar 2004 16:47:25]
						
						    3550 SMI  ipx ( 
 )? C 3550   ip.
  ,  ?

 
								---------------------------------------
								Re: 3550  ipx
								Pavel Rodionov (pavel.rodionov@snt.ua) [18 Mar 2004 17:17:51]
								
								fallback bridging
http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12119ea1/3550scg/swfallbk.htm
 EMI.   ,     
								---------------------------------------
								Re: 3550  ipx
								sf () [18 Mar 2004 18:29:29]
								
								. 
						
						=======================================
						: 3750 vs 3550
						=======================================
						Sergey Zorin (sergey@cc.tpu.edu.ru) [18 Mar 2004 16:28:06]
						
						.

       .
   :

1.        3750  3550?
( .  :  1,5   ACEs  
    3750,   3550.  -  
   ACL capacity   ?)

2.     (3750  3550) 
   Policy Based Routing   ?
								---------------------------------------
								Re: 3750 vs 3550
								Pavel Rodionov (pavel.rodionov@snt.ua) [18 Mar 2004 17:23:29]
								
								http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12119ea1/3550scg/swadmin.htm#1183346
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3750/12119ea1/3750scg/swsdm.htm
								---------------------------------------
								Re: 3750 vs 3550
								Sergey Zorin (sergey@cc.tpu.edu.ru) [18 Mar 2004 18:06:56]
								
								       ,   ,  3750  ,  3550.    ,        . ..  (    )        .

   , ,   .     (    3750  3550)       .

  , -   ?

 ,   3750 -    .
						
						=======================================
						: PING -L 64000  ,  
						=======================================
						GUARD (perm-commandos@yandex.ru) [15 Mar 2004 15:46:09]
						
						,  .   ping -l 64000 -t  HOST to SWITCH to HOST ( / ).   ping x.x.x.x -l 17900 (  ). ,    ping    64000. :     ?   ,  .     .     .     \"\".
     Cisco 3550  2950. FW   .    .
.
								---------------------------------------
								Re: PING -L 64000  ,  
								KDI () [30 Mar 2004 11:48:51]
								
								  IOS 
  3750 12.1(11)  2950 12.1(13)  
    ! ,  .     2950  12.1(11)
						
						=======================================
						: PING -L 64000  ,  
						=======================================
						GUARD (perm-commandos@yandex.ru) [15 Mar 2004 15:39:32]
						
						,  .   ping -l 64000 -t  HOST to SWITCH to HOST ( / ).   ping x.x.x.x -l 17900 (  ). ,    ping    64000. :     ?   ,  .     .     .     "".
     Cisco 3550  2950. FW   .    .
.
						
						=======================================
						: ping x.x.x.x -l 64000  .
						=======================================
						GUARD (perm-commandos@yandex.ru) [12 Mar 2004 14:07:23]
						
						,  .   . 3-   .  3550-12G,  2950SX   2950G,  29-   35-  .     (VLAN, ).   ,  -    ping x.x.x.x -l 64000 -t c         ,  .   ,    .    ping x.x.x.x -l 17900 -t   60-70mc.     ,   "  ". 
, -        ?    . .      .  .
						
						=======================================
						: Catalist 2950
						=======================================
						Daemon (Project21@vdnet.ru) [10 Mar 2004 19:10:11]
						
						     Layer 3?   policy .
								---------------------------------------
								Re: Catalist 2950
								 (BOJIKA@pisem.net) [10 Mar 2004 20:30:45]
								
								...
						
						=======================================
						: Native vlan
						=======================================
						Maks () [05 Mar 2004 19:23:46]
						
						 .    ,   .
 cat3550,      int Vlan1  int Vlan2 

   

interface FastEthernet0/1
 switchport trunk encapsulation dot1q
 switchport mode trunk
 no ip address
 mls qos trust ip-precedence


,  vlan   native,      switchport trunk native vlan 2?


    native vlan    ?
								---------------------------------------
								Re: Native vlan
								Pavel Rodionov (pavel.rodionov@snt.ua) [06 Mar 2004 12:55:06]
								
								>  .    ,   .
>  cat3550,      int Vlan1  int Vlan2 
> 
>    
> 
> interface FastEthernet0/1
>  switchport trunk encapsulation dot1q
>  switchport mode trunk
>  no ip address
>  mls qos trust ip-precedence
> 
> 
> ,  vlan   native,      switchport trunk native
> vlan 2?

1-.   show interface fast x/x switchport

> 
> 
>     native vlan    ?

interface range
								---------------------------------------
								Re: Native vlan
								Dmitrij Burak () [06 Mar 2004 15:35:51]
								
								 .
     native vlan  ?
2950  .


								---------------------------------------
								Re: Native vlan
								Arkady (ara@is.nsk.su) [09 Mar 2004 06:11:58]
								
								! 

      ,   native vlan.

       : ,      VID,   ,   vlan   1. 

,  ,           ""  ,     , ..   ""  .

  .
								---------------------------------------
								Re: Native vlan
								Leonid Gorokhov () [09 Mar 2004 14:02:16]
								
								Native vlan -  VLAN,        802.1q.  ,  ,        . -  ,    point-to-point,  shared ,    switch,     . Native VLAN     802.1q
						
						=======================================
						: Clustering VS Stacking 2950 & 3550
						=======================================
						Dmitry () [04 Mar 2004 13:58:30]
						
						,

 ,     ?  stacking        .         -  ?      2950 (cmd)  2900.  MS     . 2900    .     .     .      .
								---------------------------------------
								Re: Clustering VS Stacking 2950 & 3550
								Pavel Rodionov (pavel.rodionov@snt.ua) [04 Mar 2004 20:30:00]
								
								       stacking?         3750.     ""    GigaStack GBIC,       1GB ,    1 GBIC .  Cisco Clustering        -     . 
   --   IOS-  jre  . 
,             release notes.
						
						=======================================
						: CiscoWorks2000
						=======================================
						StasR () [04 Mar 2004 12:07:29]
						
						  : 
Campus manager   ,          .    ,    CiscoWorks2000 Campus manager     (    ).    :        CiscoWorks2000? 
    !!
						
						=======================================
						: 3550&OSPF
						=======================================
						Alexander () [04 Mar 2004 11:52:04]
						
						! 3550  OSPF  ?

(config)#router ospf 2
Unknown routing protocol


Cisco Internetwork Operating System Software 
IOS (tm) C3550 Software (C3550-I9Q3L2-M), Version 12.1(13)EA1a, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2003 by cisco Systems, Inc.
Compiled Tue 25-Mar-03 23:21 by yenanh
Image text-base: 0x00003000, data-base: 0x00654C9C

ROM: Bootstrap program is C3550 boot loader
Catalyst uptime is 1 week, 6 days, 21 hours, 50 minutes
System returned to ROM by power-on
System image file is "flash:c3550-i9q3l2-mz.121-13.EA1a/c3550-i9q3l2-mz.121-13.EA1a.bin"

cisco WS-C3550-24 (PowerPC) processor (revision J0) with 65526K/8192K bytes of memory.
Processor board ID CAT0739Y0UN
Last reset from warm-reset
Running Layer2/3 Switching Image

Ethernet-controller 1 has 12 Fast Ethernet/IEEE 802.3 interfaces

Ethernet-controller 2 has 12 Fast Ethernet/IEEE 802.3 interfaces

Ethernet-controller 3 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 4 has 1 Gigabit Ethernet/IEEE 802.3 interface

24 FastEthernet/IEEE 802.3 interface(s)
2 Gigabit Ethernet/IEEE 802.3 interface(s)

The password-recovery mechanism is enabled.
384K bytes of flash-simulated non-volatile configuration memory.
								---------------------------------------
								Re: 3550&OSPF
								Alexander () [04 Mar 2004 12:43:33]
								
								> 
> (config)#router ospf 2
> Unknown routing protocol
> 

     .
								---------------------------------------
								Re: 3550&OSPF
								 () [04 Mar 2004 14:21:36]
								
								IOS EMI   ,    RIP
								---------------------------------------
								Re: 3550&OSPF
								Alexander () [04 Mar 2004 17:51:12]
								
								> IOS EMI   ,    RIP
 
 SMI.   

http://online.comptek.ru/index.xhtml?pr=&id_note_forum=74031&by_count_days=365&regim=2&pr=&cur_page=1&by_count_page=20#forum

  EMI   -  ,   .       ...   EMI ?
								---------------------------------------
								Re: 3550&OSPF
								Pavel Rodionov (pavel.rodionov@snt.ua) [04 Mar 2004 19:00:18]
								
								.      .   .
								---------------------------------------
								Re: 3550&OSPF
								 () [05 Mar 2004 10:12:40]
								
								,           
    SMI   3550    ?
    3550     SMI   EMI
.             ""     .
,     SMI  EMI  GPL  2$(CD-3550-EMI=)
   SMI  EMI     "EMI" :
sh version, sh diag   SMI.
 ,    EMI?( 2$  CD-3550-EMI :-))
								---------------------------------------
								Re: 3550&OSPF
								 () [05 Mar 2004 10:31:36]
								
								 ,  :
,           
    MI   3550   ? 
    3550     SMI   EMI 
.             ""     . 
,     SMI  EMI  GPL  2$(CD-3550-EMI=) 
   SMI  EMI     "EMI" : 
sh version, sh diag   SMI. 
 ,    EMI?( 2$  CD-3550-EMI :-))
								---------------------------------------
								Re: 3550&OSPF
								 (BOJIKA@pisem.net) [05 Mar 2004 10:47:26]
								
								conf t
ip routing
end
wr
								---------------------------------------
								Re: 3550&OSPF
								 () [05 Mar 2004 11:06:46]
								
								,     :  ip routing   3550 .      ,   .   .   .
								---------------------------------------
								Re: 3550&OSPF
								 () [05 Mar 2004 11:23:53]
								
								     ,  3 3550  SMI  EMI  .
          
								---------------------------------------
								Re: 3550&OSPF
								Pavel Rodionov (pavel.rodionov@snt.ua) [05 Mar 2004 11:47:17]
								
								 sdm prefer routing extended-match
   --    .   , 
 EMI   ,  SMI    ...
								---------------------------------------
								Re: 3550&OSPF
								David (gigauri@ugb.com.ge) [14 Jun 2004 10:30:01]
								
								c3550-i5k2t2q3-12114Ea1.bin

   ?
						
						=======================================
						:   .
						=======================================
						Dmitry () [02 Mar 2004 14:06:23]
						
						 !

         .     8 ,    ,   ,   (netflow)  7206vxr.      .     .    gbic       30  ?   ,      ?     ? ( 3550,     ?    ).  7206  6-8 X 24 X 100      ?         . .
								---------------------------------------
								Re:   .
								Pavel Rodionov (pavel.rodionov@snt.ua) [04 Mar 2004 20:42:27]
								
								       .        .   ZX    .  
       -  4500  netflow services card   .   6500,  .   ,  7206.    -  ,    .
						
						=======================================
						:       WS-C2950SX-48-SI?
						=======================================
						 () [01 Mar 2004 17:11:38]
						
						 WS-C2950SX-48-SI.     (sh proc cpu),        -       "Calhoun LED Proc" - 16%.         ?      .  IOS   (c2950-i6q4l2-mz.121-14.AZ.bin,  c2950-i6q4l2-mz.121-19.EA1.bin, c2950-i6q4l2-mz.121-20.EA1.bin).
.
						
						=======================================
						: VTP
						=======================================
						Alexander () [01 Mar 2004 10:40:03]
						
						!    VTP  2950   :

#vtp ?              
  file  Configure IFS filesystem file where VTP configuration is stored.
 .   : 
sh vtp status 
VTP Version                     : 2
Configuration Revision          : 13
Maximum VLANs supported locally : 68
Number of existing VLANs        : 13
VTP Operating Mode              : Server
VTP Domain Name                 : zak
VTP Pruning Mode                : Disabled
VTP V2 Mode                     : Disabled
VTP Traps Generation            : Disabled

sh ver
Cisco Internetwork Operating System Software 
IOS (tm) C2950 Software (C2950-C3H2S-M), Version 12.0(5.3)WC(1), MAINTENANCE INTERIM SOFTWARE
Copyright (c) 1986-2001 by cisco Systems, Inc.
Compiled Mon 30-Apr-01 07:56 by devgoyal
Image text-base: 0x80010000, data-base: 0x8031A000

ROM: Bootstrap program is CALHOUN boot loader

c2950 uptime is 3 days, 19 hours, 44 minutes
System returned to ROM by power-on
System image file is "flash:c2950-c3h2s-mz.120-5.3.WC.1.bin"


cisco WS-C2950-24 (RC32300) processor (revision B0) with 22260K bytes of memory.
Processor board ID FAB0602W2GT
Last reset from system-reset

Processor is running Enterprise Edition Software
Cluster command switch capable
Cluster member switch capable
24 FastEthernet/IEEE 802.3 interface(s)

32K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address: 00:08:A4:44:BF:80
Motherboard assembly number: 73-5781-08
Power supply part number: 34-0971-01
Motherboard serial number: FAB060271N2
Power supply serial number: DAB05502X6D
Model revision number: B0
Model number: WS-C2950-24
System serial number: FAB0602W2GT
Configuration register is 0xF

       ?
.
								---------------------------------------
								Re: VTP
								 () [01 Mar 2004 10:46:39]
								
								CAT3#vl d
CAT3(vlan)#vtp ?
  client       Set the device to client mode.
  domain       Set the name of the VTP administrative domain.
  password     Set the password for the VTP administrative domain.
  pruning      Set the administrative domain to permit pruning.
  server       Set the device to server mode.
  transparent  Set the device to transparent mode.
  v2-mode      Set the administrative domain to V2 mode.

CAT3(vlan)#vtp


, , .
								---------------------------------------
								Re: VTP
								Vladimir () [01 Mar 2004 10:49:13]
								
								   -

#configure terminal

??
								---------------------------------------
								Re: VTP
								Alexander () [01 Mar 2004 10:55:39]
								
								>    -
> 
> #configure terminal
> 
> ??
To -!  Vladimir:  conf t      vtp ? ....
						
						=======================================
						: err_disable   catalist 2950T
						=======================================
						_roman_ (ok@sibindustry.ru) [29 Feb 2004 07:42:11]
						
						         ?

17:00:50: %ETHCNTR-3-LOOP_BACK_DETECTED: Keepalive packet loop-back detected on FastEthernet0/13.
17:00:50: %PM-4-ERR_DISABLE: loopback error detected on Fa0/13, putting Fa0/13 in err-disable state
17:00:51: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/13, changed state to down
17:00:52: %LINK-3-UPDOWN: Interface FastEthernet0/13, changed state to down

  :
interface FastEthernet0/13
 switchport access vlan 6
 switchport mode access
 no ip address
 spanning-tree portfast trunk
!
								---------------------------------------
								Re: err_disable   catalist 2950T
								Egres () [01 Mar 2004 07:51:39]
								
								http://www.cisco.com/en/US/products/hw/switches/ps628/products_command_reference_chapter09186a00800c6f2b.html#xtocid37
						
						=======================================
						: Cat3550EMI
						=======================================
						Cern (d22@list.ru) [27 Feb 2004 15:14:27]
						
						  ,   3550     .
   :        (, ) IP   ,          IP       2000    ?
						
						=======================================
						:        (+)
						=======================================
						 () [26 Feb 2004 16:51:00]
						
						  ?



Sending 100, 100-byte ICMP Echos to 10.1.0.110, timeout is 2 seconds:
!!!!!!.!!!!!!.!!!!!!.!!!!!!!!!!!!!!!!!!!.!!!!.!!!!..!!!!.!!!!!.!!!!!.!
!!!!!!.!!!!.!!!!!!!!!!.!!!.!!.
Success rate is 85 percent (85/100), round-trip min/avg/max = 1/2/10 ms

    .       ?   60-80 .

FastEthernet0/18 is up, line protocol is up
  Hardware is Fast Ethernet, address is 0002.4b45.2392 (bia 0002.4b45.2392)
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive not set
  Auto-duplex (Full), Auto Speed (100), 100BaseTX/FX
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output 00:00:01, output hang never
  Last clearing of "show interface" counters never
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue 0/75, 0 drops
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 8000 bits/sec, 4 packets/sec
     366 packets input, 36194 bytes
     Received 60 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 0 multicast
     0 input packets with dribble condition detected
     4071 packets output, 736442 bytes, 0 underruns
     0 output errors, 0 collisions, 1 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out
								---------------------------------------
								Re:        (+)
								 (BOJIKA@pisem.net) [27 Feb 2004 00:41:25]
								
								   ,     ?
								---------------------------------------
								Re:        (+)
								 () [27 Feb 2004 08:43:31]
								
								>    ,     ?
  ,   :)
     ,     .
								---------------------------------------
								Re:        (+)
								 (BOJIKA@pisem.net) [27 Feb 2004 11:34:41]
								
								...  

PS.     ...
								---------------------------------------
								Re:        (+)
								 () [27 Feb 2004 11:47:50]
								
								> PS.     ...
Netstat -e      .
   10 bit/s -   .
    ,      .
						
						=======================================
						: 3550 + QoS
						=======================================
						wetal (vbulakhov@krypton.ru) [25 Feb 2004 16:57:11]
						
						!
 -     3550?
  .
        IP Prec.       ,      CoS ( service-policy).      WRR  WRED.
  ?          WRR  WRED   .

 ,
.
						
						=======================================
						: : compex SGX3226
						=======================================
						sles (slesru@yahoo.com) [24 Feb 2004 21:44:59]
						
						  .
    ,      -   2950T ?
						
						=======================================
						: 2950-24->SDSL AVIV16S->2950-24
						=======================================
						denis (nokrad@mail.ru) [24 Feb 2004 14:08:44]
						
						  802.1q  SDSL  AVIV16S? 
  ,   1710    10\100  2950-24,     ( 802.1q)             802.1q,     ( 2.),    SDSL ,        VLAN?      ?
								---------------------------------------
								Re: 2950-24->SDSL AVIV16S->2950-24
								dmitry () [27 Feb 2004 13:34:10]
								
								. dot1q   .
						
						=======================================
						:   10   100BaseFX
						=======================================
						juragub () [23 Feb 2004 19:33:21]
						
						 !
         10   ethernet
  . 
  :
1. cat2900xl    100BaseFX
2. cat2900xl + AT-MC103XL ( 15)
: 
1.   1-     
2.      
								---------------------------------------
								Re:   10   100BaseFX
								Pavel Rodionov (pavel.rodionov@snt.ua) [23 Feb 2004 20:31:02]
								
								>  !
>          10   ethernet
>   . 
>   :
> 1. cat2900xl    100BaseFX

 2    FD

> 2. cat2900xl + AT-MC103XL ( 15)

 ,         (802.1q/isl)    ethernet     .   --      / etherchannel

> : 
> 1.   1-     
> 2.      
								---------------------------------------
								Re:   10   100BaseFX
								juragub () [24 Feb 2004 09:05:39]
								
								AT-MC103XL - Transparent to 802.1Q packets
?
								---------------------------------------
								Re:   10   100BaseFX
								Pavel Rodionov (pavel.rodionov@snt.ua) [24 Feb 2004 09:45:14]
								
								.
								---------------------------------------
								Re:   10   100BaseFX
								juragub () [24 Feb 2004 15:15:44]
								
								.
						
						=======================================
						:   ()
						=======================================
						Torbik (at@tex.kiev.ua) [23 Feb 2004 13:54:22]
						
						    ccna.  -    2900XL    2611,       . , ,  -,    ,   .          ,  .      ,   .  aux'e  .  .     (). , , ,        (  ).   ,   http    (-    ).

   ???

   :   .     ???     ,        (, ,  ,       ).

HELP!!!
								---------------------------------------
								Re:   ()
								denis () [24 Feb 2004 14:30:10]
								
								   1760   ,   aaa...   ,       ...
								---------------------------------------
								Re:   ()
								.. () [13 Apr 2004 23:21:43]
								
								     7204vxr.      -      ("" )   ()   .       .  -  . 

  -  .
								---------------------------------------
								Re:   ()
								Torbik (at@tex.kiev.ua) [14 Apr 2004 13:14:00]
								
								 .    .   .     ,    ,    , .         !
						
						=======================================
						:    ARP  2924
						=======================================
						Dmitry () [20 Feb 2004 13:48:05]
						
						 ,

    ARP   . 
    ,  1,2,3   X    . 
 X   ,    arp     . ,    ?   2924  2950       1 ,   ,     ,     ?

 -.
								---------------------------------------
								Re:    ARP  2924
								Pavel Rodionov (pavel.rodionov@snt.ua) [24 Feb 2004 10:13:45]
								
								>  ,
> 
>     ARP   . 
>     ,  1,2,3   X    . 
>  X   ,    arp     . , 
>   ?   2924  2950       1 ,   ,
>     ,     ?
> 
>  -.

 X  arp poisoning. ,  port security   . 
     ,    .   dynamic arp inspection,         4500   .

        ,    ?
								---------------------------------------
								Re:    ARP  2924
								Dmitry () [24 Feb 2004 12:05:45]
								
								   .       .
								---------------------------------------
								Re:    ARP  2924
								Julio Lumba (lumba@skif.net) [25 Feb 2004 01:24:57]
								
								    3   ,     static arp    arp .
								---------------------------------------
								Re:    ARP  2924
								Dmitry () [02 Mar 2004 13:34:48]
								
								  3 ...   .
						
						=======================================
						:   SMI  EMI  3550
						=======================================
						 () [19 Feb 2004 17:46:25]
						
						  !
       2-    3550.   .
   c3550-i5q3l2-tar.121-19.EA1a.tar       SMI  EMI .     
WS-C3550-24-SMI.
   sh ver:

Cisco Internetwork Operating System Software
IOS (tm) C3550 Software (C3550-I5Q3L2-M), Version 12.1(19)EA1a, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2003 by cisco Systems, Inc.
Compiled Tue 09-Dec-03 03:21 by yenanh
Image text-base: 0x00003000, data-base: 0x0080DDAC

ROM: Bootstrap program is C3550 boot loader

C3550 uptime is 2 weeks, 2 days, 8 hours, 19 minutes
System returned to ROM by power-on
System restarted at 08:21:09 Moldova Tue Feb 3 2004
System image file is "flash:c3550-i5q3l2-mz.121-19.EA1a/c3550-i5q3l2-mz.121-19.EA1a.bi
n"

cisco WS-C3550-24 (PowerPC) processor (revision J0) with 65526K/8192K bytes of memory.
Processor board ID CAT0745Y2SA
Last reset from warm-reset
Bridging software.
Running Layer2/3 Switching Image

Ethernet-controller 1 has 12 Fast Ethernet/IEEE 802.3 interfaces

Ethernet-controller 2 has 12 Fast Ethernet/IEEE 802.3 interfaces

Ethernet-controller 3 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 4 has 1 Gigabit Ethernet/IEEE 802.3 interface

24 FastEthernet/IEEE 802.3 interface(s)
2 Gigabit Ethernet/IEEE 802.3 interface(s)

The password-recovery mechanism is enabled.
384K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address: 00:0E:83:12:05:80
Motherboard assembly number: 73-5700-10
Power supply part number: 34-0966-03
Motherboard serial number: CAT074508D8
Power supply serial number: DTH07441W2N
Model revision number: J0
Motherboard revision number: A0
Model number: WS-C3550-24-SMI
System serial number: CAT0745Y2SA
Configuration register is 0x10F

C3550>


        :

ip route xxx.xxx.xxx.xxx yyy.yyy.yyy.yyy <gateway>

  ?    ,     ?
								---------------------------------------
								Re:   SMI  EMI  3550
								Pavel Rodionov (pavel.rodionov@snt.ua) [19 Feb 2004 18:00:08]
								
								 ip routing  ?
								---------------------------------------
								Re:   SMI  EMI  3550
								 () [20 Feb 2004 08:59:48]
								
								 ,       .    ,       .   .       ?
						
						=======================================
						: ACL  3550
						=======================================
						 (m@neta.ru) [19 Feb 2004 13:54:18]
						
						  ,     (VLAN)  3550     :
interface Vlan11
ip address 192.168.241.1 255.255.255.0
ip access-group 1 in
ip access-group 102 out

  ACL    ???
								---------------------------------------
								Re: ACL  3550
								wetal (vbulakhov@krypton.ru) [25 Feb 2004 12:51:26]
								
								  .
     matches,    sh ip acce 1
						
						=======================================
						: Spanning-tree
						=======================================
						Alexander () [19 Feb 2004 13:39:00]
						
						! 

      (2950)       ,   -      ?
								---------------------------------------
								Re: Spanning-tree
								 () [19 Feb 2004 14:16:46]
								
								
      -.
        (  ,    ,     )
								---------------------------------------
								Re: Spanning-tree
								Alexander () [19 Feb 2004 16:03:37]
								
								   .    .  3   :
 catal 1  --  catal 2 -- catal 3.   .       30 .   .      .        3 . :

 catal 1:
interface FastEthernet0/1
 switchport access vlan 181
 switchport mode access
 no ip address
!
interface FastEthernet0/2
 switchport access vlan 180
 switchport mode access
 no ip address

interface FastEthernet0/8
 switchport access vlan 21
 switchport mode access
 no ip address
!
interface FastEthernet0/9
 switchport access vlan 21
 switchport mode access
 no ip address

interface FastEthernet0/23
 switchport access vlan 37
 switchport mode access
 no ip address
!
interface FastEthernet0/24
 switchport access vlan 37
 switchport mode access
 no ip address
!
interface GigabitEthernet0/1
 description Na-cat 3
 switchport mode trunk
 no ip address
 shutdown
!
interface GigabitEthernet0/2
 description Na-Catal 2 (center)
 switchport mode trunk
 no ip address

interface Vlan21
 ip address 192.168.77.2 255.255.255.240
 no ip route-cache


catal 3:

interface FastEthernet0/1
 switchport access vlan 21
 switchport mode access
 no ip address
 spanning-tree portfast

interface FastEthernet0/4
 switchport access vlan 21
 switchport mode access
 no ip address

interface FastEthernet0/20
 switchport access vlan 180
 switchport mode access
 no ip address

interface GigabitEthernet0/1
 description Na-Cat 2(center)
 switchport mode trunk
 no ip address
!
interface GigabitEthernet0/2
 description Na-Cat 1
 switchport mode trunk
 no ip address
 shutdown

interface Vlan21
 ip address 192.168.78.2 255.255.255.240
 no ip route-cache

catalyst 2(center):

interface FastEthernet0/1
 description Router
 switchport mode trunk
 switchport nonegotiate
 no ip address
 duplex full
 speed 100

spanning-tree extend system-id
no spanning-tree vlan 14
no spanning-tree vlan 15
no spanning-tree vlan 16
no spanning-tree vlan 54
no spanning-tree vlan 64
no spanning-tree vlan 180
no spanning-tree vlan 181
no spanning-tree vlan 213
no spanning-tree vlan 214
no spanning-tree vlan 215
no spanning-tree vlan 262
no spanning-tree vlan 409
no spanning-tree vlan 410
no spanning-tree vlan 411
no spanning-tree vlan 502
no spanning-tree vlan 505
no spanning-tree vlan 506
no spanning-tree vlan 507
no spanning-tree vlan 509
no spanning-tree vlan 999

interface FastEthernet0/11
 description Na-cat 1
 switchport mode trunk
 no ip address

interface FastEthernet0/16
 description Na-cat 2
 switchport mode trunk
 no ip address
 no cdp enable
 spanning-tree portfast

interface Vlan21
 ip address 192.168.33.10255.255.255.248
 no ip route-cache
 
   down    1  3 ,   3.   .. ?
								---------------------------------------
								Re: Spanning-tree
								Leonid Gorokhov () [24 Feb 2004 17:05:19]
								
								1.     portfast! Portfast    access .
2. Management VLAN   1. VTP, CDP    VLAN1.
3.  ,   VLAN    .
						
						=======================================
						:   Catalyst 2950T
						=======================================
						Radik (rollo@mail.ru) [18 Feb 2004 20:02:31]
						
						    QoS  Catalyst,        .

:
 ,     ,   
.
  fa0/2  2 - - 192.168.0.1  192.168.0.33,
  fa0/3            .
   .
     192.168.0.1

Lanx#sh ver
Cisco Internetwork Operating System Software 
IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(14)EA1a, RELEASE SOFTWARE (fc1)
Running Enhanced Image

 - 
access-list 1 permit 192.168.0.1
class-map match-all testclass
  match access-group 1
!
!
policy-map testmap
  class testclass
    police 1000000 4096 exceed-action drop
interface FastEthernet0/2
 switchport access vlan 2
 switchport mode access
 service-policy input testmap
!
interface FastEthernet0/3
 switchport access vlan 2
 switchport mode access
!

 ,    -   7-10
  .
    -   -  
   .
   exceed-action drop  exceed-action dscp nn   ,  ,    .
    10  -     520 .
   50 -  . 3 .

    ,      ?

   .
								---------------------------------------
								Re:   Catalyst 2950T
								Ivan Dementiev (ivan@comptek.ru) [24 Feb 2004 22:35:19]
								
								 !

:
http://www.cisco.com/en/US/products/hw/switches/ps646/products_tech_note09186a00800feff5.shtml

       traffic rate  rtt,      TCP - MSS, windows size, etc.

Ivan.
								---------------------------------------
								Re:   Catalyst 2950T
								Radik (rollo@mail.ru) [25 Feb 2004 13:36:52]
								
								  ,  .
  .
,   udp-.
						
						=======================================
						: HSRP  3750
						=======================================
						Lu (casper@tellur.ru) [18 Feb 2004 16:57:45]
						
						      HSRP   3750.   ,              .      ,         ,         ,     .
 :
GigabitEthernet1/0/1 - Group 0
  Local state is Active, priority 150
  Hellotime 3 sec, holdtime 10 sec
  Next hello sent in 0.613
  Virtual IP address is 192.168.10.10 configured
  Active router is local
  Standby router is unknown
  Virtual mac address is 0000.0c07.ac00
  5 state changes, last state change 00:10:44
  IP redundancy name is "hsrp-Gi1/0/1-0" (default)
GigabitEthernet2/0/1 - Group 0
  Local state is Learn, priority 100
  Hellotime 3 sec, holdtime 10 sec
  Virtual IP address is unknown
  Active router is unknown
  Standby router is unknown
  0 state changes, last state change never
  IP redundancy name is "hsrp-Gi2/0/1-0" (default)  

 cisco.com     HSRP ,  Catalyst 3750 Switch Software Configuration Guide  ,   .
    .
:)
						
						=======================================
						: nat msfc2
						=======================================
						gosha () [13 Feb 2004 10:28:40]
						
						 !
 ,    IOS   :A sequencing problem results when there are NAT ACL configurations and static NAT entries in the startup configuration at bootup. The problem results in incorrect entries being programmed into the Ternary Content Addressable Memory (TCAM). Refer to Bug ID CSCdx35689 (registered customers only) for more information.
    12.1(11b)E3,  12.1(11b)E4   .
						
						=======================================
						: trunk  2950  3Com
						=======================================
						Arkady (ara@is.nsk.su) [13 Feb 2004 08:57:19]
						
						! 

   vlan  3Com SuperStackIII  2950.  ,   3Com     vlan,    ip. ,   2950     vlan, . 

   3Com,    2950:
Select menu option (bridge/port): det
Select bridge port (1-4,7-24,AL1-AL4): 17

Unit 1, Port 17 Detailed Information

State:                Forwarding        fwdTransitions:         0
StpCost:                      18        BroadcastStormControl:  Enabled
DefaultPriority:               0

VLAN ID             VLAN Name           Tagging Mode
-------------------------------------------------------------------------------
1                   Default VLAN        Untagged
100                 DMZ                 Tagged
200                 for_Gorod_Network   Tagged


   2950,    3Com:
Catalyst#sh running-config interface fastEthernet 0/1
!
interface FastEthernet0/1
 switchport mode trunk
end


   2950,     ,    vlan:
Catalyst#sh running-config interface fastEthernet 0/7
!
interface FastEthernet0/7
 switchport access vlan 200
 switchport mode access
end


 vlan: 
Catalyst#sh vlan id 200

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
200  For_Gorod_network                active    Fa0/1, Fa0/7


Catalyst#sh interfaces fastEthernet 0/1 trunk

Port        Mode         Encapsulation  Status        Native vlan
Fa0/1       on           802.1q         trunking      1

Port      Vlans allowed on trunk
Fa0/1       1-4094

Port        Vlans allowed and active in management domain
Fa0/1       1-2,100,200

Port        Vlans in spanning tree forwarding state and not pruned
Fa0/1       1-2,100,200

Catalyst#sh ver
Cisco Internetwork Operating System Software
IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(14)AZ, RELEASE SOFTWARE (fc2)
cisco WS-C2950T-48-SI (RC32300) processor (revision A0) with 20710K bytes of memory.


!
								---------------------------------------
								Re: trunk  2950  3Com
								Arkady (ara@is.nsk.su) [13 Feb 2004 11:31:22]
								
								 .     .
						
						=======================================
						: Tacacs+  Catalyst
						=======================================
						juragub () [09 Feb 2004 12:34:47]
						
						,     TACACS+     Catalyst 2900XL (    ).
								---------------------------------------
								Re: Tacacs+  Catalyst
								Pavel Rodionov (pavel.rodionov@snt.ua) [09 Feb 2004 13:01:02]
								
								,     ?       ?    dot1x,   2900XL   ,      radius.
								---------------------------------------
								Re: Tacacs+  Catalyst
								juragub () [09 Feb 2004 13:42:11]
								
								C,  ...
						
						=======================================
						: IGMP snooping - 
						=======================================
						Mike (michael-g@mail.ru) [09 Feb 2004 10:38:43]
						
						  .
  Catalyst 3550   -  - .      .
 ,    ,    , ..   Leave (     ,   ),        (   20   ).
  -   ? ,  -       ?
								---------------------------------------
								Re: IGMP snooping - 
								Pavel Rodionov (pavel.rodionov@snt.ua) [09 Feb 2004 11:25:58]
								
								show ip igmp snooping .
  aging timer
 ip igmp snooping source-only learning age-timer <time>
								---------------------------------------
								Re: IGMP snooping - 
								Mike (michael-g@mail.ru) [09 Feb 2004 12:33:45]
								
								> show ip igmp snooping .
>   aging timer
>  ip igmp snooping source-only learning age-timer <time>

  .    (    19,  -   17):
===================================================
ip igmp snooping source-only-learning age-timer 1
ip igmp snooping vlan 1 mrouter interface Fa0/19
mac-address-table aging-time 90 vlan 1
===================================================

Switch#sh ip igmp snooping            
Global IGMP Snooping configuration:
-----------------------------------
IGMP snooping             : Enabled
IGMPv3 snooping (minimal) : Enabled
Report suppression        : Enabled
TCN solicit query         : Disabled
TCN flood query count     : 2

Vlan 1:
--------
IGMP snooping                       : Enabled
Immediate leave                     : Disabled
Multicast router learning mode      : pim-dvmrp
Source only learning age timer      : 1
CGMP interoperability mode          : IGMP_ONLY

Switch#sh ip igmp snooping mrouter 
Vlan    ports
----    -----
   1    Fa0/19(static)

Switch#sh mac address-table multicast 
Vlan    Mac Address       Type       Ports
----    -----------       ----       -----
   1    0100.5e40.0101    IGMP       Fa0/17, Fa0/19

Switch#sh ip igmp snooping group      
Vlan      Group          Version     Port List
---------------------------------------------------------
1         239.192.1.1    v2          Fa0/17
===============================================
						
						=======================================
						:    Nortel
						=======================================
						lbmas () [05 Feb 2004 18:30:42]
						
						   Nortel?  , ,.
 Cisco 7505  Catalyst 5000.    Nortell 8006.
 Nortell 8006   NAT.     ?
  
								---------------------------------------
								Re:    Nortel
								Pavel Rodionov (pavel.rodionov@snt.ua) [09 Feb 2004 11:24:46]
								
								http://forums.deknet.ru/

   NAT-,    ,   NAT- .
						
						=======================================
						:   IOS  2900XL
						=======================================
						ak () [02 Feb 2004 17:49:42]
						
						      c3h2l9s     IOS  2900XL.

 .
						
						=======================================
						:   Catalyst 4507
						=======================================
						V82 (svarkovsky@inbox.ru) [30 Jan 2004 14:39:54]
						
						,   -   4507   ,      4  ,   ,   
								---------------------------------------
								Re:   Catalyst 4507
								Volume () [30 Jan 2004 17:57:30]
								
								 2
								---------------------------------------
								Re:   Catalyst 4507
								Pavel Rodionov (pavel.rodionov@snt.ua) [30 Jan 2004 21:06:34]
								
								  2,    
http://www.cisco.com/en/US/partner/products/hw/switches/ps663/products_tech_note09186a0080134f18.shtml#topic2
(Sup IV)
						
						=======================================
						:    image  
						=======================================
						Leonid Gorokhov () [30 Jan 2004 14:20:48]
						
						   2950T.   rommon.    image   copy xmodem: flash:new_image.bin.  I/O error. BIN    .      hyperterminal.    ?
								---------------------------------------
								Re:    image  
								Volume () [30 Jan 2004 17:58:10]
								
								    :)
								---------------------------------------
								Re:    image  
								Sergey Erohin () [02 Feb 2004 02:30:08]
								
								    copy ...   HypeTerminal'  Transfer->Send File ?
								---------------------------------------
								Re:    image  
								 (BOJIKA@pisem.net) [02 Feb 2004 15:52:41]
								
								http://www.cisco.com/en/US/products/hw/switches/ps628/products_command_reference_chapter09186a00801a6baf.html#1004653
http://www.cisco.com/en/US/products/hw/switches/ps628/products_tech_note09186a0080169696.shtml
						
						=======================================
						:   vlan  vtp 
						=======================================
						 () [30 Jan 2004 08:04:00]
						
						 !

    ,  ,   vlan  vtp-   . ..  .  vtp- commander-switch   c3524   256 vlan ,     c2950-24,   64 vlan .   ,    65 vlan  -?
								---------------------------------------
								Re:   vlan  vtp 
								Andy (andy@iip.net) [02 Feb 2004 18:08:18]
								
								2950     
								---------------------------------------
								Re:   vlan  vtp 
								 () [03 Feb 2004 14:36:34]
								
								 ,         ..
								---------------------------------------
								Re:   vlan  vtp 
								Leonid () [03 Feb 2004 17:33:12]
								
								 vtp   transparent.
						
						=======================================
						: ACL  3550
						=======================================
						 (m@neta.ru) [28 Jan 2004 16:24:40]
						
						  ,        ,  .
, 3550    ,  ,     -,  -    .  -          (    - ,         ,  -).
    ?
								---------------------------------------
								Re: ACL  3550
								Pavel Rodionov (pavel.rodionov@snt.ua) [28 Jan 2004 17:50:37]
								
								     . 
 vlan1 --> vlan2
 vlan1  out,  vlan2 -- in.
 .
						
						=======================================
						: 2950, switchport protected, trunk
						=======================================
						sles () [28 Jan 2004 16:21:57]
						
						!

-    ,      ,     protected.

, !
						
						=======================================
						: 3550 + BGP
						=======================================
						 () [27 Jan 2004 14:46:17]
						
						-  BGP  3550 ?  ,    
								---------------------------------------
								Re: 3550 + BGP
								Egres () [28 Jan 2004 07:05:17]
								
								  .   ,  :-))).
    , ,    .
								---------------------------------------
								Re: 3550 + BGP
								Andy (andy@iip.net) [02 Feb 2004 18:06:56]
								
								  .       .

      .
      - 
  netflow. 
    -    .
						
						=======================================
						:    3550
						=======================================
						 (vova@grodno.by) [27 Jan 2004 12:45:35]
						
						    (),       3550 (3524)       .       .              ?
    :
Catalyst1 ---------- Catalyst2
   |                     |
Catalyst4 ---------- Catalyst3
   |
7206VXR ---  

 STP            .      STP.    3550  L3          ?
   7206VXR (  fastethernet) ?
   ?
:    6-10   4    
								---------------------------------------
								Re:    3550
								 (vova@grodno.by) [27 Jan 2004 12:47:05]
								
								   # :-(
 2    3,         4-
								---------------------------------------
								Re:    3550
								Pavel Rodionov (pavel.rodionov@snt.ua) [27 Jan 2004 13:39:46]
								
								  ,          RSTP      . -  . 
     ,   routed ports  ,     L3   OSPF  EIGRP.       , 
 1-    VLAN     ,   -  .
								---------------------------------------
								Re:    3550
								Egres () [27 Jan 2004 13:51:51]
								
								>   ,          RSTP 
>     . -  .

  ,  .       .
								---------------------------------------
								Re:    3550
								 (vova@grodno.by) [27 Jan 2004 13:57:26]
								
								          RSTP?
								---------------------------------------
								Re:    3550
								 (als0@mail.ru) [27 Jan 2004 14:04:45]
								
								    .  -  3 .  Vlan      256.    ,    ?  ?   -  ,  ,   - ,   ,     2 .     RSTP     ?   -    2 , -    .        .
   RIP     ?        RIP!
     3550     ?

 ,
.
								---------------------------------------
								Re:    3550
								Pavel Rodionov (pavel.rodionov@snt.ua) [27 Jan 2004 19:24:00]
								
								    MSTP.
http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12119ea1/3550scg/swmstp.htm

  rapid-PVST+
http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12119ea1/3550scg/swstp.htm
spanning-tree mode rapid-pvst
								---------------------------------------
								Re:    3550
								 (vova@grodno.by) [27 Jan 2004 20:09:48]
								
								     :-)
 RSTP  
      L3 
    3550          AS5400(5350)   Zyxel IES-1000 (2000)
								---------------------------------------
								Re:    3550
								VL (vlad@belpak.vitebsk.by) [02 Feb 2004 22:27:07]
								
								>     .  -  3 .  Vlan   
>   256. 
 3550   1005 VLANs:
http://www.cisco.com/en/US/products/hw/switches/ps646/products_configuration_guide_chapter09186a00800c9fd8.html#xtocid2
						
						=======================================
						: Catalyst 3550
						=======================================
						 () [23 Jan 2004 17:25:55]
						
						 2  3550  24  48 .       VTP ?
								---------------------------------------
								Re: Catalyst 3550
								Pavel Rodionov (pavel.rodionov@snt.ua) [26 Jan 2004 10:00:29]
								
								 .  ,   .      .
						
						=======================================
						:     Catalyst'
						=======================================
						_ () [23 Jan 2004 07:48:38]
						
						,

    -      (2924XL, 2950-24)    -   down,        RJ-45   .     -  !

 sh interface f0/3    -  .

 ,   ,   -    ?    

 !
								---------------------------------------
								Re:     Catalyst'
								Pavel Rodionov (pavel.rodionov@snt.ua) [23 Jan 2004 09:41:57]
								
								show interface status . 
   ,   .
						
						=======================================
						:  3550   2651
						=======================================
						Lex () [19 Jan 2004 11:45:13]
						
						 !
         ?
   3550-24EMI    2651,      L3      .   vlan  L2   . ..  2     1Gb   .
           vlan99 c ip      ,      L3 .

    vlan  1- 
interface FastEthernet0/1
 description Prov
 switchport access vlan 99
 switchport mode access
 no ip address
 no keepalive
 no cdp enable
 spanning-tree portfast
 spanning-tree bpdufilter enable
 spanning-tree bpduguard enable

  1-      
interface GigabitEthernet0/2
 description to-c3550-2
 switchport trunk encapsulation dot1q
 switchport mode trunk
 no ip address
 no keepalive
 no cdp enable

  2-      
interface GigabitEthernet0/1
 description to-c3550-1
 switchport trunk encapsulation dot1q
 switchport mode trunk
 no ip address
 no keepalive
 no cdp enable

  2-    
interface FastEthernet0/1
 description router 0
 switchport trunk encapsulation dot1q
 switchport mode trunk
 no ip address
 no keepalive
 no cdp enable

  
interface FastEthernet0/0
 no ip address
 no keepalive
 duplex auto
 speed auto
 no cdp enable
!
interface FastEthernet0/0.1
 encapsulation dot1Q 99
 ip address xxx.xxx.xxx.xxx 255.255.255.248
 ip access-group 102 out
 ip accounting output-packets
 ip nat outside
 ip wccp web-cache redirect out
 no cdp enable
!
								---------------------------------------
								Re:  3550   2651
								Lex () [23 Jan 2004 14:41:13]
								
								   ?      .       VTP  ?
      ...
								---------------------------------------
								Re:  3550   2651
								Egres () [26 Jan 2004 06:54:39]
								
								          VLAN,      VTP,      .      ,   .
								---------------------------------------
								Re:  3550   2651
								Sergey Erohin (erseal@nm.ru) [27 Jan 2004 15:04:08]
								
								   :

# vlan database
# (vlan) vlan 99 state active
# (vlan) apply
# (vlan) exit
						
						=======================================
						:     Cayalyst 2950
						=======================================
						 (vv-voronin@yandex.ru) [16 Jan 2004 07:27:23]
						
						-    Cayalyst 2950(SI) ,          ?

  :
 Cisco 827-4v -catalyst2950(SI)--Catalyst2950(SI).

 !
						
						=======================================
						: VLAN'S
						=======================================
						Catalyst () [15 Jan 2004 07:16:34]
						
						,      VLAN' (    Maximum VLANS supported locally : 68)  Catalyst 2924.  ,   ?
								---------------------------------------
								Re: VLAN'S
								Pavel Rodionov (pavel.rodionov@snt.ua) [15 Jan 2004 10:25:43]
								
								    ?          .
								---------------------------------------
								Re: VLAN'S
								Catalyst () [15 Jan 2004 13:17:38]
								
								  - pdf-  2950, - :   SI,  64 max VLAN,   EI,  256. ?
								---------------------------------------
								Re: VLAN'S
								 (BOJIKA@pisem.net) [15 Jan 2004 13:36:10]
								
								 2924   ....
								---------------------------------------
								Re: VLAN'S
								Catalyst () [15 Jan 2004 15:10:30]
								
								...   2970    ?
						
						=======================================
						:     down :((((
						=======================================
						Maks () [14 Jan 2004 14:38:27]
						
						Jan 14 14:25:01 MSK: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/18, changed state to down
Jan 14 14:25:04 MSK: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/18, changed state to up
Jan 14 14:25:20 MSK: %ETHCNTR-3-LOOP_BACK_DETECTED: Loop-back detected on FastEthernet0/18. The port is forced to linkdown.
Jan 14 14:25:22 MSK: %LINK-5-CHANGED: Interface FastEthernet0/18, changed state to administratively down
Jan 14 14:25:23 MSK: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/18, changed state to down

  ,  cat3550  F0/18  Intel Switch c IP-.  (  ,            ) int F0/18    administratively down

    3-    ,     . :(((

    ?   catalyst      administratively down?
								---------------------------------------
								Re:     down :((((
								Pavel Rodionov (pavel.rodionov@snt.ua) [15 Jan 2004 10:21:30]
								
								
no errdisable recovery cause loopback
,         .
								---------------------------------------
								Re:     down :((((
								Maks () [16 Jan 2004 17:51:08]
								
								, .
								---------------------------------------
								Re:     down :((((
								Maks () [16 Jan 2004 17:53:35]
								
								CATALIST_3550(config)#no errdisable recovery cause ?
  all                Enable timer to recover from all causes
  bpduguard          Enable timer to recover from BPDU Guard error disable state
  channel-misconfig  Enable timer to recover from channel misconfig disable state
  dtp-flap           Enable timer to recover from dtp-flap error disable state
  gbic-invalid       Enable timer to recover from invalid GBIC error disable state
  l2ptguard          Enable timer to recover from l2protocol-tunnel error disable state
  link-flap          Enable timer to recover from link-flap error disable state
  pagp-flap          Enable timer to recover from pagp-flap error disable state
  psecure-violation  Enable timer to recover from psecure violation disable state
  udld               Enable timer to recover from udld error disable state


Loopback - ?
								---------------------------------------
								Re:     down :((((
								Pavel Rodionov (pavel.rodionov@snt.ua) [19 Jan 2004 10:32:20]
								
								    12.1(19),   loopback,    keepalive.
								---------------------------------------
								Re:     down :((((
								Maks () [22 Jan 2004 13:47:24]
								
								     . 

    IP-   Intel-  .       ,     .
						
						=======================================
						: SI  EI?
						=======================================
						Alexander () [13 Jan 2004 17:47:25]
						
						!
        (SI  EI)     2950T.

								---------------------------------------
								Re: SI  EI?
								Joysi (marat@tnpko.ru) [13 Jan 2004 18:47:40]
								
								 show ver      :

Cat2950-24(1_fl_nogigabit)#sh ver | incl Running
Running Standard Image

Cat2950-T24(1th_fl)#sh ver | incl Running
Running Enhanced Image
								---------------------------------------
								Re: SI  EI?
								Alexander () [13 Jan 2004 19:07:22]
								
								sh ver
Cisco Internetwork Operating System Software 
IOS (tm) C2950 Software (C2950-C3H2S-M), Version 12.0(5.3)WC(1), MAINTENANCE INTERIM SOFTWARE
Copyright (c) 1986-2001 by cisco Systems, Inc.
Compiled Mon 30-Apr-01 07:56 by devgoyal
Image text-base: 0x80010000, data-base: 0x8031A000

ROM: Bootstrap program is CALHOUN boot loader
System returned to ROM by power-on
System image file is "flash:c2950-c3h2s-mz.120-5.3.WC.1.bin"


cisco WS-C2950-24 (RC32300) processor (revision B0) with 22260K bytes of memory.
Processor board ID FAB0602W2GT
Last reset from system-reset

Processor is running Enterprise Edition Software
Cluster command switch capable
Cluster member switch capable
24 FastEthernet/IEEE 802.3 interface(s)



sh ver | incl running
Processor is running Enterprise Edition Software

   ?
								---------------------------------------
								Re: SI  EI?
								Arkady (ara@is.nsk.su) [14 Jan 2004 05:24:21]
								
								 ,  , ,    Enhanced Image?
								---------------------------------------
								Re: SI  EI?
								Joysi (marat@tnpko.ru) [14 Jan 2004 09:09:40]
								
								http://www.cisco.com/en/US/products/sw/iosswrel/ps1833/prod_bulletin09186a00800ab81f.html

,   1024  4096 VLAN-, 64  32      ..
								---------------------------------------
								Re: SI  EI?
								Joysi (marat@tnpko.ru) [14 Jan 2004 09:23:09]
								
								http://www.cisco.com/en/US/products/hw/switches/ps628/products_qanda_item09186a008009258e.shtml
								---------------------------------------
								Re: SI  EI?
								Arkady (ara@is.nsk.su) [14 Jan 2004 10:16:55]
								
								   . 

 Q&A ,     ,      . 

   . ,  ,  "WS-C2950T-48-SI"    ,   "WS-C2950G-48-EI"?
						
						=======================================
						:   3550
						=======================================
						Constantin () [12 Jan 2004 10:01:40]
						
						 .
 2  Cisco 3550.      (isco 8540CSR)    10        .  3550  :
C3550#
00:05:23: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/10, chan
ged state to up
00:05:55: %ETHCNTR-3-LOOP_BACK_DETECTED: Keepalive packet loop-back detected on
FastEthernet0/10.
00:05:55: %PM-4-ERR_DISABLE: loopback error detected on Fa0/10, putting Fa0/10 i
n err-disable state
00:05:56: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/10, chan
ged state to down
00:05:57: %LINK-3-UPDOWN: Interface FastEthernet0/10, changed state to down

    -    ,     8540.     .      .
 !
								---------------------------------------
								Re:   3550
								Pavel Rodionov (pavel.rodionov@snt.ua) [12 Jan 2004 10:23:19]
								
								     no errdisable detect cause loopback.
								---------------------------------------
								Re:   3550
								Constantin () [12 Jan 2004 10:58:49]
								
								,      .   
IOS (tm) C3550 Software (C3550-I5Q3L2-M), Version 12.1(19)EA1a, RELEASE SOFTWARE
 (fc1)
          - 12.1(13)EA  12.1(8)EA.     ?

   no keepalive     .    ?

        :
00:18:16: %ETHCNTR-3-LOOP_BACK_DETECTED: Loop-back detected on FastEthernet0/8.
The port is forced to linkdown.
00:18:16: %SM-4-BADEVENT: Event 'link_down' is invalid for the current state 'li
nk_down': pm_port 0/7
-Traceback= 2E88B8 2D6E28 2B1158 2E6270 2E66A8 19A194
00:18:16: %ETHCNTR-3-LOOP_BACK_DETECTED: Loop-back detected on FastEthernet0/10.
 The port is forced to linkdown.
00:18:17: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/10, chan
ged state to down
00:18:18: %LINK-3-UPDOWN: Interface FastEthernet0/10, changed state to down  

        .
  ?
								---------------------------------------
								Re:   3550
								Constantin () [12 Jan 2004 11:02:42]
								
								,  -  Bug Navigator  cisco.com            -   .
								---------------------------------------
								Re:   3550
								Pavel Rodionov (pavel.rodionov@snt.ua) [12 Jan 2004 11:19:08]
								
								,   .   . 
      .

http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12119ea1/3550cr/cli1.htm#1861525
								---------------------------------------
								Re:   3550
								Constantin () [13 Jan 2004 09:18:37]
								
								.  -    ,     .
						
						=======================================
						: 3550 SMI, EMI & netflow
						=======================================
						Dmitry () [08 Jan 2004 14:38:36]
						
						  !

  c,   ,   3550 netflow
accounting ?  EMI   SMI ?
								---------------------------------------
								Re: 3550 SMI, EMI & netflow
								Pavel Rodionov (pavel.rodionov@snt.ua) [08 Jan 2004 15:07:29]
								
								 
								---------------------------------------
								Re: 3550 SMI, EMI & netflow
								Dmitry () [08 Jan 2004 15:20:03]
								
								       ip   - ?
    ?
								---------------------------------------
								Re: 3550 SMI, EMI & netflow
								Pavel Rodionov (pavel.rodionov@snt.ua) [08 Jan 2004 15:40:19]
								
								   . accounting   ,    .
						
						=======================================
						:  
						=======================================
						Slava () [08 Jan 2004 11:52:41]
						
						 !
 - .    4- 2950 c    . ,      ?   ,       L3.     .      (,    ).      BSD/Linux.

 
								---------------------------------------
								Re:  
								Evgeni () [08 Jan 2004 14:29:56]
								
								    ""       Cisco 1721.    ,       .  VPN, VLAN....

http://www.cisco.com/en/US/products/hw/routers/ps221/products_data_sheet09186a00800920ec.html 

  ...   Ethernet ,     www.cisco.com  autosense 10 Mbps...       ....       .
								---------------------------------------
								Re:  
								Sergeu Erohin (il21@msk.vtb.ru) [14 Jan 2004 14:04:07]
								
								  4*2950   2950   3550. 3550     IOS   2  .