North American Network Operators Group

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Re: Route Supression Problem

  • From: Danny McPherson
  • Date: Wed Mar 12 13:28:27 2003

> 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