[84307] in North American Network Operators' Group
Re: Katrina Network Damage Report
daemon@ATHENA.MIT.EDU (bmanning@vacation.karoshi.com)
Sat Sep 10 17:21:18 2005
Date: Sat, 10 Sep 2005 21:20:49 +0000
From: bmanning@vacation.karoshi.com
To: Randy Bush <randy@psg.com>
Cc: Todd Underwood <todd@renesys.com>, nanog@nanog.org
In-Reply-To: <17187.19478.772696.725498@roam.psg.com>
Errors-To: owner-nanog@merit.edu
> but reachability is what it's all about. the folk here are
> paid to deliver packets. the control plane (routing) is one of
> the tools we use to achieve that end.
>
> Re: From: George William Herbert <gherbert@retro.com>
> > Looking at the routing tables you see failures. If a prefix
> > goes away completely and utterly, and is truly unreachable,
> > then anyone trying to see it is going to see an outage.
>
> not if a covering or more specific tells us how to get packets
> to the destination. but perhaps that's what you mean by a
> prefix being unreachable and i am being too picky.
would that be that -all- your neighbors have no
information on how to forward that packet, then
the destination is unreachable.
what if a neighbor lies about reachablity and you
dump your packets into their "blackhole"?
that darned policy-constrained routing ick can be
tough to deal w/...
>
> randy
--bill (who will return to lurking)
