[162969] in North American Network Operators' Group
Re: ISIS and OSPF together
daemon@ATHENA.MIT.EDU (Randy Bush)
Sun May 12 04:57:59 2013
Date: Sun, 12 May 2013 09:57:08 +0100
From: Randy Bush <randy@psg.com>
To: Glen Kent <glen.kent@gmail.com>
In-Reply-To: <CAPLq3UN6KcDLxA9uq+XW9PLt04YGwaHHe3N-6i136upbCEc5eQ@mail.gmail.com>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
> One scenario that i can think of when somebody might run the 2 protocols
> ISIS and OSPF together for a brief period is when the admin is migrating
> from one IGP to the other. This, i understand never happens in steady
> state. The only time this can happen is if an AS gets merged into another
> AS (due to mergers and acquisitions) and the two ASes happen to run ISIS
> and OSPF respectively. In such instances, there is a brief period when two
> protocols might run together before one gets turned off and there is only
> one left.
no. some ops come to see the light and move their network from ospf to
is-is. see vijay gill's nanog preso
http://nanog.org/meetings/nanog29/presentations/aol-backbone.ram
