RE: aggregate-address in bgp???

From: RSiddappa@xxxxxxxxxx
Date: Tue Feb 12 2002 - 02:36:58 GMT-3


   
By any chance does R1 has better routes to this aggregate or Aggregated
route.

Then the behavior is absolutely acceptable.

R.

-----Original Message-----
From: Shadi [mailto:ccie@investorsgrp.com]
Sent: Monday, February 11, 2002 12:20 PM
To: ccielab
Subject: aggregate-address in bgp???

Guys,

I have simple scenario on BGP but with a strange behavior!!

I have the below simple diagram which is a small network from a larger and I
am running bgp and ospf in it. I wanted to summarize the loopback interfaces
on R2, I did that and it worked fine, the aggregate route is 160.0.0.0/4,
the
route got updated to R1, and it appears in the bgp table of R1, but after a
while I get that the route got disappeared again and I don't know why, when
I
do debug it says: "no route to 160.0.0.0/4", but the next hop is reachable
and
I can ping it from R1. I don't know why it appears in the R1 bgp table for 1
min and then disappears again.

Any suggestions? Of course bgp sync is off on all Routers.

10.10.10.1 10.10.10.2
R1<--------------------------------------------->R2
BGP AS2 BGP AS3
                                                      lo1:160.10.10.1/24
                                                      lo2:170.10.10.1/24
                                                      lo3:161.10.10.1/24

R2:

router bgp 3
no sync
aggregate-address 160.0.0.0 240.0.0.0 summary-only
redistribute connected
neighbor 10.10.10.1 remote-as 2

R1

router bgp 2
no sync
neighbor 10.10.10.2 remote-as 3

Shadi



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