Re: Mechanisms for a multi-homed host to pick the best router

On Wed, 17 Sep 2008 22:32:29 EDT, Cayle Spandon said:

(Problem 2) If there is a topology change after the TCP connection has been established, the traffic might follow a sub-optimal path.

Another possibility is that the connection was originally established *during* a link outage, so the initial part of the connection was done over a sub-optimal path, and that the topology change puts it back to the normal better path... A possible *biggger* issue is that "toss the reply packet back where the original came from" makes traffic-engineering your outbound packets a lot more challenging - you end up having to play announcement games upstream of your N routers to engineer your *inbound* traffic so your outbound packets do what you want.