Re: Katrina Network Damage Report

On Sat, 10 Sep 2005, Todd Underwood wrote:

the general idea is: take a large peerset sending you full routes, keep every update forever, and take a reasonably long (at least a month or two) time horizon. calculate a consensus view for each prefix as to whether that prefix is reachable by some set of those peers. an outaged prefix is one that used to be reachable that not no longer is. in other words, one that has been withdrawn from the full table by some sufficiently large number of peers.

This describes a partioning, not necessarily an outage.