From: john matijevic (matijevi@bellsouth.net)
Date: Mon Jan 10 2005 - 22:07:26 GMT-3
Hello Anthony,
The method you describe below refers to link authentication, area
authentication you must use the area authentication command. Doyle vol1
descibes the deference as well as parkhurst's ospf book.
Sincerely,
John Matijevic, CCIE #13254
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Anthony Sequeira
Sent: Sunday, January 09, 2005 2:19 AM
To: Cisco certification
Subject: Goodbye area x authentication command????
Hi all!
I think I have stumbled upon something while playing with
authentication in OSPF. Pardon me if this is really old news.
Call me crazy - but I never want (or seem to need) to use the area x
authentication command again!
In order to configure either Type 1 or Type 2 authentication between
peers - simply do the following on INTERFACES:
Type 1 Exampe:
ip ospf authentication
ip ospf authentication-key cisco
Type 2 Example:
ip ospf authentication message-digest
ip ospf message-digest-key 1 md5 cisco
I am thinking about making these methods my new best practices - I
found it more quick to configure this way - and I also found that it
eliminated the need for additional manipulation of virtual links......
Comments?????
One potential issue that I see is that if Cisco says in the lab that
you must authenticate in area 0 - and you do it using this method -
and you have virtual links - you are not truly meeting the requirement
since there is not authentication on the virtual link which is part of
area 0.
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