RE: RIP Authentication

From: Ian Stong (istong@stong.org)
Date: Mon Apr 21 2003 - 10:14:00 GMT-3

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Double check your passwords for spaces. Sometimes that will cause the error
you are seeing. It may be simplest to remove and add back the passwords -
be sure to do it manually versus cut and paste to ensure accuracy.

Ian

www.ccie4u.com
Rack Rentals and Lab Scenarios starting at $20

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Jimmy Doukas
Sent: Monday, April 21, 2003 7:18 AM
To: ccielab@groupstudy.com
Subject: RIP Authentication

Hi All,

I have a simple question (hopefully) re. RIP authentication.

I have two routers directly connected via serial interfaces

R2 S1 <----------> S0 R1 Encap is HDLC (very simple config)

I'm trying to configure simple RIP authentication between the two - no
luck.
Here are the relevant configs from both

~~~~~~~~
R2
~~~~~~~~
!
key chain RIP_Auth
 key 1
  key-string cisco
  accept-lifetime 13:27:00 Apr 1 2003 infinite
  send-lifetime 13:27:00 Apr 1 2003 infinite
 key 2
  key-string cisco
key chain keychain
 key 2
  key-string cisco
!
interface Serial1
 ip address 10.21.1.1 255.255.0.0
 ip rip send version 2
 ip rip receive version 2
 ip rip authentication mode md5
 ip rip authentication key-chain keychain
 clockrate 125000
!

~~~~~~~~~~
R1
~~~~~~~~~~
!
key chain RIP_Auth
 key 1
  key-string cisco
  accept-lifetime 13:27:00 Apr 1 2003 infinite
  send-lifetime 13:27:00 Apr 1 2003 infinite
 key 2
  key-string cisco
key chain keychain
 key 2
  key-string cisco
!
!
interface Serial0
 ip address 10.21.1.2 255.255.0.0
 ip directed-broadcast
 ip rip send version 2
 ip rip receive version 2
 ip rip authentication mode md5
 ip rip authentication key-chain keychain
 logging event subif-link-status
 fair-queue

a debug of ip rip shows:
00:29:43: RIP: ignored v2 packet from 10.21.1.1 (invalid authentication)

I've tried clear authentication and still nothing.

If anyone can enlighten me that would be great.

Thanks in advance,
Jim

Ps. Clock are synchronised.

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