Wording of OSPF authentication

From: Toh Soon, Lim (tohsoon28@gmail.com)
Date: Sun Sep 02 2007 - 20:43:26 ART


Hi Group,

In terms of task wording, what would hint to area authentication or
interface authentication? I found the following past archive and Brian
provided valuable insight:

http://www.groupstudy.com/archives/ccielab/200410/msg00774.html

I came across tasks in workbook that are worded as follows:

(1) Authenticate this link with an MD5 hash
(2) Authenticate area 0 with an MD5 hash
(3) Authenticate all area 0 interfaces with an MD5 hash

For (1), I guess using the following method will suffice:

!
int <the specified int>
 ip ospf authentication message-digest
 ip ospf message-digest-key 1 md5 cisco123
!

For (2) and (3), if I use either one of the following methods:

Method 1
--------
!
router ospf 1
 area 0 authentication message-digest
!
<--- All Area 0 interfaces --->
 ip ospf message-digest-key 1 md5 cisco123
!

Method 2
--------
<--- All Area 0 interfaces --->
 ip ospf authentication message-digest
 ip ospf message-digest-key 1 md5 cisco123
!

Do I correctly answer the questions?

Thank you.

B.Rgds,
Lim TS



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