Re: OSPF MD5 authentication

From: Nick Griffin (ngriffin@sio.midco.net)
Date: Sat Jun 10 2006 - 18:38:45 ART


I guess I don't see a problem with it, are you having problems
establishing adjacencies? OSPF uses the youngest key for the key
rollover process. If you add an additional key you should see it switch
to youngest:

R1(config-subif)#ip ospf message-digest-key 1 md5 CISCO
R1(config-subif)#
*May 12 12:11:26.254: OSPF: Send with youngest Key 1

R1(config-subif)#ip ospf message-digest-key 2 md5 CISCO2
R1(config-subif)#
*May 12 12:11:56.254: OSPF: Send with key 1
*May 12 12:11:56.254: OSPF: Send with key 2
*May 12 12:12:56.254: OSPF: Send with youngest Key 2

Sami wrote:
> Group,
>
> I asked this earlier also but no one replied..I hope this time some one
> reply. I am doing OSPF MD5 authentication and getting this irritating messge
> evey second , although my ospf adjaceny are up.
>
> *Jun 10 14:13:15.859: OSPF: Send with youngest Key 1
> --More--
> *Jun 10 14:13:45.859: OSPF: Send with youngest Key 1
> --More--
> *Jun 10 14:14:15.859: OSPF: Send with youngest Key 1
> --More--
> *Jun 10 14:14:45.859: OSPF: Send with youngest Key 1
> --More--
> *Jun 10 14:15:15.859: OSPF: Send with youngest Key 1
>
> Config ---
>
> router ospf 1
> router-id 5.5.5.5
> log-adjacency-changes
> auto-cost reference-bandwidth 2000
> area 0 authentication message-digest
> network 180.180.235.5 0.0.0.0 area 0
> network 180.180.235.0 0.0.0.255 area 0
> neighbor 180.180.235.2
> neighbor 180.180.235.3
>
> interface Serial4/0.235 multipoint
> ip address 180.180.235.5 255.255.255.0
> ip ospf authentication message-digest
> ip ospf message-digest-key 1 md5 cisco
> frame-relay map ip 180.180.235.2 605 broadcast
> frame-relay map ip 180.180.235.3 602 broadcast
> frame-relay map ip 180.180.235.5 602
> !
>
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