[90698] in North American Network Operators' Group
Re: IP failover/migration question.
daemon@ATHENA.MIT.EDU (Edward B. DREGER)
Mon Jun 12 00:08:08 2006
Date: Mon, 12 Jun 2006 04:07:36 +0000 (GMT)
From: "Edward B. DREGER" <eddy+public+spam@noc.everquick.net>
To: nanog@merit.edu
In-Reply-To: <eacc82a40606112055g68f333fam385abe0675773fd0@mail.gmail.com>
Errors-To: owner-nanog@merit.edu
AW> Date: Sun, 11 Jun 2006 20:55:42 -0700
AW> From: Andrew Warfield
AW> I'd love a multi-ISP solution. I just assumed that anything involving
AW> more than a single upstream AS across the two links would leave me
AW> having to consider BGP convergence instead of just IGP reconfig. I
AW> didn't presume that that would likely be something that happened in
AW> seconds. If there's a fast approach to be had here, I'd love to hear
AW> it.
(1) Internal link between locations.
(2) Same ISPs at all locations.
The closer to the source, the faster the convergence.
Be sure to test. I've had multiple links to one provider _within the
same datacenter_ where their iBGP-fu (or whatever they had) was lacking.
Bouncing one and only eBGP session to them triggered globally-visible
flapping. :-(
Eddy
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