Goodbye area x authentication command????

From: Anthony Sequeira (terry.francona@gmail.com)
Date: Sun Jan 09 2005 - 04:18:48 GMT-3


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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