On Wed, 7 Feb 2007, Don Annas wrote:

When peering with multiple providers, is it a requirement that you pick a primary to send and receive traffic or can you not prepend AS hops and allow traffic to arrive to you via the 'best' BGP route.

There is no way to "insure" that traffic will come back to you on any particular interface/connection. Prepending is the "best method" to add to the probability that the "other" route will be used. It should be noted that it is possible that a BGP Peer will remove your prepended hops, however.

Butch Evans
Network Engineering and Security Consulting
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