From: Jeff Horton (JHorton@xxxxxxxxxxxxxxxx)
Date: Thu Jun 13 2002 - 10:02:43 GMT-3
Emmanuel,
After seeing a posting out here yesterday I spent some time last night and
initially had the same problem. The mode and everything looked correct in
the config. I found the problem by completely re-doing my configuration.
Anyway, it turned out that in the key chain I had put a "0" in front of the
string that I had omitted on the other routers. As I recall it didn't show
in the config. Also, check authentication mode and again if all else fails,
re-build the keys altogether.
-----Original Message-----
From: Emmanuel Oppong [mailto:e-oppong@attbi.com]
Sent: Wednesday, June 12, 2002 11:19 PM
To: ccielab@groupstudy.com
Subject: RIP v2 Authentication not working
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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