From: Joseph Brunner (joe@affirmedsystems.com)
Date: Wed Oct 17 2007 - 14:01:27 ART
Aren't you doing the IE WB vol II ver. 4.1?
Distance bgp 20 200 255
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Con
Spathas
Sent: Wednesday, October 17, 2007 12:30 PM
To: 'Cisco certification'
Subject: BGP aggregate-address and null0 route
I think I'm missing something here but for the life of me I can't work it
out...
When you configure an aggregate-address summary in BGP it adds the relevant
summary into the routing table pointing to null0.
Is there any way to remove this?
I have a scenario where a router (R1) running BGP is advertising a summary
to a peer (R2). However another router (R3) is sending R1 a default-route
via RIP.
R3 knows how to get to say 10.1.3.0/24 and R1 uses the default route to R3
to get to this subnet. Things work nicely up to this point.
However when R1 advertises the 10.1.0.0/16 summary into BGP - the route to
null0 is matched on R1 and I lose connectivity to 10.1.3.0/24 from R1.
Thx.
This archive was generated by hypermail 2.1.4 : Fri Nov 16 2007 - 13:11:15 ART