RIP v2 Authentication not working

From: Emmanuel Oppong (e-oppong@xxxxxxxxx)
Date: Thu Jun 13 2002 - 00:19:18 GMT-3


   
Hi folks,

I have the following configs for authenticating routing updates between 2
RIP v2 routers: BB2 and r4. I thought this config should work fine. But it
doesn't. Without the authentication I receive routes between the 2 routers.
Debug shows that I have invalid authentication. What could be wrong. Any
ideas?

Router BB2:
key chain r4
 key 1
  key-string cisco4
!
interface TokenRing0
 ip rip authentication mode md5
 ip rip authentication key-chain r4
!

Router r4:
key chain bb2
 key 1
  key-string cisco4
!
interface TokenRing0
 ip rip authentication mode md5
 ip rip authentication key-chain bb2
!

BB2:
debug ip rip events
-----sample output----
06:26:23: RIP: ignored v2 packet from 204.205.5.1 (sourced from one of our
addresses)
06:26:25: RIP: ignored v2 packet from 172.16.40.4 (invalid authentication)



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