[189006] in North American Network Operators' Group
Re: Friday's Random Comment - About: Arista and FIB/RIB's
daemon@ATHENA.MIT.EDU (Nick Hilliard)
Fri Apr 29 09:30:23 2016
X-Original-To: nanog@nanog.org
X-Envelope-To: nanog@nanog.org
Date: Fri, 29 Apr 2016 14:30:12 +0100
From: Nick Hilliard <nick@foobar.org>
To: Laszlo Hanyecz <laszlo@heliacal.net>
In-Reply-To: <57235C34.2030800@heliacal.net>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
Laszlo Hanyecz wrote:
> I'm curious about specific failure modes that can result from this, if
> anyone can share examples/experience with it.
The canonical pathological case is where the deaggregated prefixes are
affected by upstream topology changes and suddenly your optimisations
which saved you N% of forwarding lookup table capacity are wiped out to
zero and you end up with no ability to look up next-hops.
Nick
