Route reflector -Cause

From: Mark Szwed <szwarowski_at_gmail.com>
Date: Sat, 8 Mar 2014 21:48:05 +0100

Hi guys ,

I have a situation in which the production routers in my company are
showing huge cpu usage . After carefully troubleshooting and analyzing all
configuration , I come to the conclusion that in the Core routers , on one
of the iBGP peers (lets call Z) has huge update messages that keep on
increasing .Keep in mind that Z has got eBGP peering as well .

Z is peering with 2 RRs and on RR1 is a route map which sets a community
to the outgoing routes to Z and the other RR2 sends all routes without
community .

 router Z is receiving less routes from RR1 due to the communty settings
,can this kind of RR peering be the cause of high CPU load .

My thought was RR2 sends all routes to Z , but Z receives less routes
from RR1 , and this triggers constant update message from RR1 .

Anyone to help explain if it is possible to peer with an 2 RR with
different policies towards the client ?

Thank you!

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Received on Sat Mar 08 2014 - 21:48:05 ART

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