> Dampening is done on the eBGP router where the route enters the AS, and, > unless I'm mistaken, per route/path and not per prefix. So the flapping > that ISP A sees from ISP B is a completely seperate thing from the > flapping that ISP A sees from its customer's customer as far as the > dampening algorithm is concerned.
Nope. It's per-prefix. Have a look at the pointer Randy provided. I think one of the section of RFC 2439 alludes to this as well. -danny
