IRB - 2 interfaces in the same VLAN

From: pkoltl@xxxxxx
Date: Wed Jul 31 2002 - 05:34:36 GMT-3


   
Hello,

I have 3 interfaces on a router (S0/1, E1/0, F0/0) and I want to bridge IPX
and route IP between them. The two ethernets connect to the same VLAN so
they cannot have their own IP addresses, they have to share a common IP
address. Is it possible to do with IRB or other bridging method?

I've created the following config:

bridge irb
interface FastEthernet0/0
 no ip address
 bridge-group 1
interface Serial0/1
 ip address 152.3.8.10 255.255.255.252
 encapsulation ppp
 bridge-group 1
!
interface Ethernet1/0
 no ip address
 bridge-group 1
!
interface BVI1
 ip address 152.3.8.18 255.255.255.252
bridge 1 protocol ieee
 bridge 1 route ip

Unfortunately, the S0/1 interface does not route IP, it cannot be pinged
from the other side of the link unless I remove it from the bridge-group.
Maybe I need two bridge groups but I think no bridging can be configured
between bridge groups.

Thanks,
Peter



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