IRB - Transparent bridging problem!

From: Nicolai Gersbo Solling (nicolai@xxxxxxxxx)
Date: Sun Apr 07 2002 - 13:35:11 GMT-3


   
I have the following Scenario:

R5---Vlan 10---Switch---Vlan40---R6

I wan't to bridge IP between R5 and R6...

...but I am a bit in doubt of which bridge protocol to use:

R5 is a standard configuration and the switch has it's sc0 in Vlan 40.

I have configured R6 (The router that actually takes care of the bridging)
with the following:

bridge 1 protocol vlan-bridge
 bridge 1 route ip
 bridge 1 route ipx
!
interface FastEthernet0.10
 encapsulation isl 10
 no ip redirects
 bridge-group 1
!
interface FastEthernet0.40
 encapsulation isl 40
 no ip redirects
 bridge-group 1
!
interface BVI1
 ip address 137.22.12.6 255.255.255.0
 no ip redirects
 standby ip 137.22.12.2
 standby priority 126
 standby preempt

I got the config working now, but I had some strange problems getting it to
work...
I got Encapsulation failed on R5 when I tried to ping R6 - Both the
Mac-table of the switch and the Arp-cache of R6 looked good, but I could
just not resolve on R5...
Then I tried reloading R6 - This did not help...Somehow something was wrong
in the switch - After giveing that a good old powercycle - It works like a
charm...

Any good, and bright ideas why I encountered this...
And is it Vlan Bridging I need to use?

Nic



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