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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Route Supression Problem
From: "Iljitsch van Beijnum" > > Nope. It's per-prefix. > > If that is the case then dampening is severely broken, because then a > router that receives a prefix over two paths will lose *both* if _one_ > flaps. > Which makes me wonder what happens when one of my BGP peers is flapping and the other is holding stable with an AS prepend on it. > In any case, it is done on the eBGP router receiving the prefix/route, > so unless the two ISPs in question peer using the same router as they > use to connect to Jack's AS, there still shouldn't be any flapping > multiplication. (Hm, unless that happened inside Jack's network...?) > My network is too simplistic to have flapping multiplication. The only difference between the customers routes and my own are that I do an AS prepend on all my networks going out to one of my peers so that the peer only sends customer traffic to me and serves as a last resort, while my customers routes out all peers without modification. -Jack
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