North American Network Operators Group
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Re: Katrina Network Damage Report

  • From: Sean Donelan
  • Date: Sat Sep 10 10:20:07 2005 
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  in other words, one that has been withdrawn from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.