nanog mailing list archives

Re: Route Supression Problem


From: Danny McPherson <danny () tcb net>
Date: Wed, 12 Mar 2003 11:27:06 -0700



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



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