RE: OSPF Auth + PPP Auth

From: Jamie Sanbower (JSanbower@icscorp.com)
Date: Sun Apr 25 2004 - 03:49:41 GMT-3


Thanks this must have been the problem because when i retype it in it came
up fine! This is what happens when you are doing practice labs at 2am or in
some cases nervous at the real lab!

Thanks

-----Original Message-----
From: Kenneth Wygand [mailto:KWygand@customonline.com]
Sent: Sunday, April 25, 2004 2:42 AM
To: Jamie Sanbower; ccielab@groupstudy.com
Subject: RE: OSPF Auth + PPP Auth

Jamie,

Remove and reinstall the following command under the associated Serial
interface on both routers:

ip ospf message-digest-key 199 md5 cisco

9 times out of 10 you have an extra space after one of the passwords
(one side being "cisco" and the other side being "cisco " - note the
extra space), which results in a different MD5 hash on both sides.

Let us know! :)

Kenneth E. Wygand
Systems Engineer, Project Services
CISSP #37102, CCNP, CCDP, ACSP, Cisco IPT Design Specialist, MCP, CNA,
Network+, A+
Custom Computer Specialists, Inc.
"The only unattainable goal is the one not attempted."
-Anonymous

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Jamie Sanbower
Sent: Sunday, April 25, 2004 1:32 AM
To: 'ccielab@groupstudy.com'
Cc: Jamie Sanbower
Subject: OSPF Auth + PPP Auth

I was wondering if someone could help out with a configuration i an
authentication problem I am having

The following is the configs:

R3------R4

hostname r3
!
username r4 password 0 cisco
!
interface Serial0/0
 ip address 192.168.2.142 255.255.255.252
!
interface Serial0/1
 ip address 192.168.2.145 255.255.255.252
 encapsulation ppp
 ip ospf message-digest-key 199 md5 cisco
 clockrate 64000
 ppp authentication chap
!
router ospf 1
 area 4 authentication message-digest
 network 192.168.2.140 0.0.0.3 area 0
 network 192.168.2.144 0.0.0.3 area 4
!

hostname r4
!
username r3 password 0 cisco
!
interface Serial1
 ip address 192.168.2.146 255.255.255.252
 encapsulation ppp
 ip ospf message-digest-key 199 md5 cisco
 ppp authentication chap
!
router ospf 1
 area 4 authentication message-digest
 network 192.168.2.144 0.0.0.3 area 4

r3#debug ip ospf ad
OSPF adjacency events debugging is on
r3#
10:28:56: OSPF: Send with youngest Key 199
10:29:02: OSPF: Rcv pkt from 192.168.2.146, Serial0/1 : Mismatch
Authentication
Key - Message Digest Key 199

r4#debug ip ospf ad
OSPF adjacency events debugging is on
r4#
03:45:44: OSPF: Send with youngest Key 0
03:45:44: OSPF: Send with youngest Key 199
03:45:48: OSPF: Rcv pkt from 192.168.2.145, Serial1 : Mismatch
Authentication Ke
y - Message Digest Key 199

Thanks in advance



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