From: atul pawar (atulpawar@hotmail.com)
Date: Mon Mar 24 2003 - 13:19:57 GMT-3
Guyes
I m having problem troubleshooting one 3550 problem. The config is as
follows. when i checked each interface it shows same BIA Mac address for all
ports . Is this correct ? I can see MAc address table which has got number
of addresses which I think should be used. for inetrafces
SH interfaces fast0/1
astEthernet0/1 is up, line protocol is up
Hardware is Fast Ethernet, address is 0000.0000.0001 (bia 000a.8a60.c480)
show interfaces fastEthernet 0/2
FastEthernet0/2 is up, line protocol is up
Hardware is Fast Ethernet, address is 0000.0000.0002 (bia 000a.8a60.c480)
AMMA_3550#sh run
Building configuration...
Current configuration : 5899 bytes
!
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname GAMMA_3550
!
no logging buffered
no logging console
enable secret 5 $1$tZyS$rPteFklSVbFUnSa9tWnRg1
!
ip subnet-zero
ip routing
no ip domain-lookup
!
vtp mode transparent
!
vlan 2
name Management_Vlan
!
spanning-tree extend system-id
!
!
!
interface FastEthernet0/1
description ***Bickerdike Court***
mac-address 0000.0000.0001
no switchport
ip address 10.10.4.1 255.255.255.0 secondary
ip address 195.134.26.62 255.255.255.240
duplex full
speed 100
no cdp enable
!
interface FastEthernet0/2
description ***Platt Court***
mac-address 0000.0000.0002
no switchport
ip address 10.10.6.1 255.255.255.0 secondary
ip address 195.134.26.94 255.255.255.240
duplex full
speed 100
no cdp enable
!
interface FastEthernet0/3
description ***Abbey Court***
mac-address 0000.0000.0003
no switchport
ip address 10.10.5.1 255.255.255.0 secondary
ip address 195.134.26.78 255.255.255.240
duplex full
speed 100
no cdp enable
!
interface FastEthernet0/4
description ***Frank Cowan Court***
mac-address 0000.0000.0004
no switchport
ip address 10.10.11.1 255.255.255.0 secondary
ip address 195.134.26.174 255.255.255.240
duplex full
speed 100
no cdp enable
!
interface FastEthernet0/5
description ***St Georges Building***
mac-address 0000.0000.0005
no switchport
ip address 10.10.1.1 255.255.255.0 secondary
ip address 195.134.26.14 255.255.255.240
duplex full
speed 100
no cdp enable
!
interface FastEthernet0/6
description ***Royce Court***
mac-address 0000.0000.0006
no switchport
ip address 10.10.2.1 255.255.255.0 secondary
ip address 195.134.26.30 255.255.255.240
duplex full
speed 100
no cdp enable
!
interface FastEthernet0/7
description ***Duffield Court***
mac-address 0000.0000.0007
no switchport
ip address 10.10.3.1 255.255.255.0 secondary
ip address 195.134.26.46 255.255.255.240
duplex full
speed 100
no cdp enable
!
interface FastEthernet0/8
description ***Bradford Court***
mac-address 0000.0000.0008
no switchport
ip address 10.10.7.1 255.255.255.0 secondary
ip address 195.134.26.110 255.255.255.240
duplex full
speed 100
no cdp enable
!
interface FastEthernet0/9
description ***Lancaster Court***
mac-address 0000.0000.0009
no switchport
ip address 10.10.8.1 255.255.255.0 secondary
ip address 195.134.26.126 255.255.255.240
duplex full
speed 100
no cdp enable
!
interface FastEthernet0/10
description ***Kingsbridge Court***
mac-address 0000.0000.0010
no switchport
ip address 10.10.9.1 255.255.255.0 secondary
ip address 195.134.26.142 255.255.255.240
duplex full
speed 100
no cdp enable
!
interface FastEthernet0/11
description ***Sandyhill Court***
mac-address 0000.0000.0011
no switchport
ip address 10.10.10.1 255.255.255.0 secondary
ip address 195.134.26.158 255.255.255.240
duplex full
speed 100
no cdp enable
!
interface FastEthernet0/12
description ***Nelson Court***
mac-address 0000.0000.0012
no switchport
ip address 10.10.12.1 255.255.255.0 secondary
ip address 195.134.26.190 255.255.255.240
duplex full
speed 100
no cdp enable
!
interface FastEthernet0/13
description ***BSDU_TEST***
no switchport
ip address 10.10.13.1 255.255.255.0 secondary
ip address 195.134.26.206 255.255.255.240
duplex full
speed 100
no cdp enable
When i checked a layer two device connected to this
switch I can see same BIA adddress being learned on different ports. Could
someone please explain how 3550 should behave. My understnading is it should
use internal mac table using different mac address for each interface.
I> sh lb fwd
Bridge Forwarding Table Number of Entries: (83) Node:(SALF-4800-32-1)
Mac Address State Port-list
00:00:00:00:00:01 Learned 2a1
00:00:00:00:00:02 Learned 2a2
00:00:00:00:00:03 Learned 2a3
00:00:00:00:00:04 Learned 2a4
00:00:00:00:00:05 Learned 2a5
00:00:00:00:00:06 Learned 2a6
00:00:00:00:00:07 Learned 2a7
00:00:00:00:00:08 Learned 2a8
00:00:00:00:00:09 Learned 2a9
00:00:00:00:00:10 Learned 2a10
00:00:00:00:00:11 Learned 2a11
00:00:00:00:00:12 Learned 2a12
00:00:39:bf:32:f4 Learned 1b1.2
00:0a:8a:60:c4:80 Learned 2a5 --------------------- This MAC address
is the 3550 BIA
00:10:6a:00:20:29 Learned 1b1.2
I> sh lb fwd
Bridge Forwarding Table Number of Entries: (83) Node:(SALF-4800-32-1
Mac Address State Port-list
00:00:00:00:00:01 Learned 2a1
00:00:00:00:00:02 Learned 2a2
00:00:00:00:00:03 Learned 2a3
00:00:00:00:00:04 Learned 2a4
00:00:00:00:00:05 Learned 2a5
00:00:00:00:00:06 Learned 2a6
00:00:00:00:00:07 Learned 2a7
00:00:00:00:00:08 Learned 2a8
00:00:00:00:00:09 Learned 2a9
00:00:00:00:00:10 Learned 2a10
00:00:00:00:00:11 Learned 2a11
00:00:00:00:00:12 Learned 2a12
00:00:39:bf:32:f4 Learned 1b1.2
00:0a:8a:60:c4:80 Learned 2a2 -------------------- Same MAC Address
on Different interface
00:10:6a:00:20:29 Learned 1b1.2
This archive was generated by hypermail 2.1.4 : Sat Apr 05 2003 - 08:51:43 GMT-3