From: wilson@wilsonch.gotdns.com
Date: Mon Feb 19 2007 - 16:12:09 ART
Actually, I think you need to change statement #2 to be "area 0
authentication message-digest". Statement #1 is only for the
authentication between the two routers.
http://www.cisco.com/warp/public/104/27.html
Wilson
> Hi GS
>
> I just need some clarification with virtual links authentication with
> regards to this lab task (IEWB Ver 3 Lab 6 Task 4.5).
> When using MD5 authentication in OSPF Area 0 and there are virtual links
> between Area 0 ABRs and ABR's of other areas, is it compulsory to use the
> following two commands or the first command is sufficient:
>
> 1. area 23 virtual-link 1.2.3.4 message-digest-key 1 md5 CISCO
> 2. area 23 virtual-link 1.2.3.4 authentication message-digest
>
> I did not use the second command but the routers are authenticated and I
> can see the message 'Message digest authentication enabled' under the sh
> ip ospf virtual-links command.
>
> Please note that there is an OSPF routing process command area 0
> authentication message-digest also configured.
>
>
> Thanks for any input
>
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