[187255] in North American Network Operators' Group
Re: The IPv6 Travesty that is Cogent's refusal to peer Hurricane
daemon@ATHENA.MIT.EDU (Nick Hilliard)
Mon Jan 25 13:28:56 2016
X-Original-To: nanog@nanog.org
X-Envelope-To: nanog@nanog.org
Date: Mon, 25 Jan 2016 18:26:48 +0000
From: Nick Hilliard <nick@foobar.org>
To: Joe Maimon <jmaimon@ttec.com>
In-Reply-To: <56A665BB.7050000@ttec.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Joe Maimon wrote:
> Maybe not for some people, but I have a hard time understanding why one
> extra ebgp session is such a novel concept for all you networking folk.
multihop bgp means that you don't have synchronised ethernet carrier
status between the provider and customer routers. This in turn means
that if there's an intermediate connectivity problem, bgp will need to
time out before it notices and reroutes. During this period, traffic
will be black-holed. This is a crock.
Nick
