bgp best path compare-routerid implementation example
andy at nosignal.org
Fri Sep 25 07:21:22 UTC 2009
On 25 Sep 2009, at 05:24, devang patel wrote:
> I am looking for the *bgp best path compare*-*routerid* implementation
> example? I know the function of it but looking for some scenario
> where its
> been used...
This option is really only used in order to instruct a router to skip
the option before it in best path selection algorithm (prefer the path
learned from the older established session).
I don't think you'd use it if you ran a normal network (or knew what
you were doing ;-) ) because you'd typically use much more
deterministic decisions to send traffic to specific and predictable
paths, or you'd use hot-potato routing and send the traffic to the
nearest equivalent exit ('prefer ebgp over ibgp' and 'prefer path with
lowest igp metric' comes before 'use the oldest path').
Regards, Andy Davidson +44 (0)20 7993 1700 www.netsumo.com
NetSumo Specialist networks consultancy for ISPs, Whitelabel 24/7 NOC
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