From: Scott Morris (swm@emanon.com)
Date: Wed Nov 10 2004 - 11:37:06 GMT-3
The authentication does not affect the establishment of the adjacency on a
virtual link. It does, however, affect the acceptance of the routes.
The other thing you have to keep in mind as you look at things (sh ip o v),
you may have authentication listed with a NULL key. Check out your show
commands. :)
And remember that while you can indeed authenticate with a NULL key, it is
different than authenticating with a key of "cisco" or whatever the lab
tells you to do, so you may lose points even though your table appears ok!
Scott
-----Original Message-----
From: Swaroop Potdar [mailto:swarooppotdar@hotmail.com]
Sent: Wednesday, November 10, 2004 3:42 AM
To: swm@emanon.com; inlink@klsc.co.kr; ccielab@groupstudy.com
Subject: RE: ospf area0 authenticaion - virtual link
Hi Scott,
I totally agree with you that virtual link belongs to area 0.
but what i observed while configuration was even if area 0 authentication
was enabled and i created a virtual link without authentication on it...it
didnt go down and formed the adjacencies too.
(IOS 12.2(15)T14)
And this has happened many a times.????
is it a best practise to enable authentication on virtual link or without
that it shouldnt come up.
Am puzzled...may be i am working against some bugs..
as i had some different output while manipulating the distance of routes
from the source received.
>From: "Scott Morris" <swm@emanon.com>
>Reply-To: "Scott Morris" <swm@emanon.com>
>To: "'inlink'" <inlink@klsc.co.kr>, <ccielab@groupstudy.com>
>Subject: RE: ospf area0 authenticaion - virtual link
>Date: Tue, 9 Nov 2004 23:16:10 -0500
>
>A virtual link by definition belongs to area 0. So whatever you are doing
>to area 0 should be done to the virtual link. You can define the
>parameters
>individually on the VL config line.
>
>In the end what you are doing is extending area 0 out to the further ABR
>via
>the virtual link.
>
>HTH,
>
>Scott
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
>inlink
>Sent: Tuesday, November 09, 2004 11:22 PM
>To: ccielab@groupstudy.com
>Subject: ospf area0 authenticaion - virtual link
>
>Hi
>area0 - md5 authentication
>area1 - clear text authenticaion
>
>What kind of method does used to virutal link area ?
>I am test both method( md5, clear text) about virtual link.
>
>I am confused to virtual-link authenticaion.( area0 method or sub area
>method)? [IMAGE]
>
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Regards,
Swaroop.
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