From: Steve McNutt (lpd@xxxxxxxxxxxxxxxx)
Date: Sun Nov 05 2000 - 17:40:20 GMT-3
I figured out what the problem was. in both cases where I tried to do this
it was an experiment I performed after completing a lab, and in both cases
there was a virtual link to the router I thought should have been seeing the
summary routes. I nuked the virtual link making the router a normal
internal router and the summarization worked.
It seems when you have a router with a virtual-link it's considered an ABR
and therefore the area 0 summariazation does not apply as It has an
interface in area 0, indirect though it may be. I probbly should have
deduced this sooner given the recent thread regarding Area 0 authentication
and virtual links. Just didn't dawn on me what the core issue was in that
case.
I want to thank everyone who emailed me with advice. Pretty much everyone
told me I was on the wrong trail and needed to take another look at what I
was doing. Thank you!
-Steve
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
dave.awatere@equant.com
Sent: Monday, November 06, 2000 1:48 AM
To: ccielab@groupstudy.com
Subject: Re: OSPF area 0 summarization question
Good Q. I have ignored these /32's but they have been sitting in the back
of my
head as a great little lab Q. I can't try it right now but I am sure an
area
range will aggregate for a non backbone area just not so sure about area 0.
Anybody running a FR area 0 lab they can try?
R\Davo
"Steve McNutt" <lpd@jacksonville.net>@groupstudy.com on 11/04/2000 05:17:13
PM
Please respond to "Steve McNutt" <lpd@jacksonville.net>
Sent by: nobody@groupstudy.com
To: <ccielab@groupstudy.com>
cc:
Subject: OSPF area 0 summarization question
A common scenario in practice labs is the frame cloud with mixed interface
types running ospf area 0. a common solution is to use ip ospf network
point-to-multipoint on all of the interfaces.
Of course the drawback to this is now you have a host route for every frame
interface that resides in the backbone area. wouldn't it be nice to
summarize these routes so everybody and their dog doesn't have to run SPF
everytime a backbone interface flaps?
There does not seem to be a mechanism to do this (at least I have not
figured out how to do it). Is it a true statement that area 0 originated
routes cannot be summarized within the OSPF domain?
P.S. I hope we can avoid a religious discussion of what frame mapping/ospf
interface combination is best.
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