ospf virtual link Area authentication

From: stephen skinner (stephenski@gmail.com)
Date: Tue Oct 21 2008 - 03:24:19 ARST


hello,

i have the following questions i am not to sure about ,

could someone please help

Area 2 ----Area 5 ------Area 0
R1 R1-R2 R2-R3
0/0 0/1 0/0 0/1 0/0 (all ethernets)

Senario
configure OSPF strongest authentication for area 0 by using the "area 0
authentication message-digest" command

Connect area 2 to the main ospf network , Do not use tunnels ( use the "area
x virtual link" command)

my question is ,

If i am in the Lab and i have added the "area 0 authentication
message-digest" to R2 and R3 ..

do i need to add the command "area 0 authentication message-digest" to my
router R1 , thats in Area 2 ??

i have configed it up , without the above command in R1 , and it works fine.

i am just wondering what people think is " best practise"

Another question

when trying this out , i found i had to type all the information on one line
, even thought the IOS puts these commands on two lines.

i am not going mad am i ???? ,
not much sleep this week ..

TIA

MD5
(i typed )
area 2 virtual-link 2.2.2.2 authentication message-digest message-digest-key
1 md5 CISCO
(IOS Showed)
area 2 virtual-link 2.2.2.2 authentication message-digest
area 2 virtual-link 2.2.2.2 message-digest-key 1 md5 CISCO

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