From: chrlewis@cisco.com
Date: Mon Sep 19 2005 - 10:15:02 GMT-3
One possibility (and I have no idea if this meets all the requirements
or breaks something else in your lab) is that you could filter the inter
area route for the subnet between r1 and r2 from being sent to r3.
If r3 receives an eternal route from r2, it will check to see if it has
a route to the forward address of the external route (which would be the
route I've usggested you filter out). Without an inter or intra area
route to the forward address of the external route, r3 will not install
the route.
Chris
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Private Ryan
Sent: Sunday, September 18, 2005 1:46 PM
To: Cisco certification
Subject: Route Filtering in OSPF
Hi All,
I have the problem:
----(e0)r1(e1)------(e0)r2(e1)------(e0)r3
r1(e1): ospf area 0
r2(e0): ospf area 0
r2(e1): ospf area 1
r3(e0): ospf area 1
e0 of r1 is redistributed connected into OSPF. How can filter Type-5
route such that r3 will not see this Type-5 route ? Area 1 can't be
changed into stub or nssa.
I can't use "area X filter-list" because it can only filter Type-3
route.
How to do that? Thanks a lot !!
Ryan
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