RE: Re： OSPF Route Maniputation

From: Darren Johnson (dazza_johnson@yahoo.co.uk)
Date: Fri Dec 07 2007 - 08:18:27 ART

Hmmmm great question. You immediately think:

Change AD on a per route basis
or
Change ospf cost on one of Router Ds receiving interface

But as Jason alludes to, changing the AD will change the distance for all
routes because they have the same RouterID (that of Router A).
Changing the ospf cost will change the costs for ALL routes (which is not
what Jason wanted).

I'm all ears for other opinions, but not sure this is possible?

Dazzler

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Chan
Hong
Sent: 07 December 2007 10:16
To: Smith, Jason; ccielab@groupstudy.com
Subject: Re： OSPF Route Maniputation

Dear Jason,

I want to use ip ospf network point-to-multipoint on router D +
neighbor cost or create tunnel to achieve this. But you said only config
RouterD is permitted. So may be using distribute list to deny routing in
RouterD can help you.
ip access-list extended 101
deny ip host [router ip]
[subnet/host route want to deny]
permit ip any nay
router ospf 1
distribute-list 101 in

But I believe it's only valid in the lab enviroment.
I'm thinking that is that possible to create 1 more ospf process on routerD
and redistribute the 2 ospf process, using route-map to match route-source
and
prefix to deny the prefix you want to deny.

Regards
Howard

----- 6l%s-l%s 

----
1H%s$H!R "Smith, Jason" <JASmith@nuvox.com>
&,%s$H ccielab@groupstudy.com
6G0e$i4A!R 2007 &~ 12$k 5 $i ,P4A$T $U$H 11:01:55
%DCD!G OSPF Route
Maniputation

Hey Group,

I am trying to figure out a way to change the cost
of routes that are
inbound to a router.  For instance, if I have 5 routes
being advertised
from routerA and they are sent to RouterD via to equal cost
paths (A
connects to B and C, B and C connect to D).  How can I change RouterD
to
prefer one of these networks via a single path without changing the rest
of
the routes.  Is there a way to do this by only configuring router D,
and of
course you can't use static routes or change the cost of any
other networks.
Thanks,

Jason Smith

CCIE #12097

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