BGP, MULTI_EXIT_DISC

From: David Lee Steele, Jr. (d.steele2@xxxxxxxxxxx)
Date: Fri Apr 05 2002 - 12:28:36 GMT-3


   
RFC 1771 states the following:

a) If the local system is configured to take into account
MULTI_EXIT_DISC, and the candidate routes differ in their
MULTI_EXIT_DISC attribute, select the route that has the lowest value of
the MULTI_EXIT_DISC attribute.

In regards to the Cisco BGP command, bgp always-compare-med, which is in
compliance with the RFC? Should a router compare MEDs only on paths
within the same AS or should a comparison be made regardless of which AS
the path originated from?

Any examples of when you would use one over the other?

David Lee Steele, Jr.

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