[c-nsp] BGP/ACL Question

Murphy, Jay, DOH Jay.Murphy at state.nm.us
Tue Mar 17 17:12:55 EDT 2009


Second the suggestion


Jay Murphy 
IP Network Specialist 
NM Department of Health 
ITSD - IP Network Operations 
Santa Fe, New Mexico 87502 
Bus. Ph.: 505.827.2851

"We move the information that moves your world." 






-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Pete Templin
Sent: Tuesday, March 17, 2009 1:50 PM
To: Jeff Cartier
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] BGP/ACL Question

Jeff Cartier wrote:
> I'm going to be configuring CoPP to match BGP traffic between
> peers...and I am having a forgetful moment :-)...in order to match the
> BGP peer, in my ACL, should I be matching based on the BGP local
> router-ID or on the directly connected interface?

Match based on whatever the update-source is for that neighbor.  Default

is closest physical interface at the time that the session is 
established, typical practice is to use a loopback interface for iBGP 
sessions.  Router-ID won't appear in the IP headers of the packets.

pt

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