[110186] in North American Network Operators' Group
Re: IPv6: IS-IS or OSPFv3
daemon@ATHENA.MIT.EDU (Randy Bush)
Sun Dec 28 09:23:26 2008
Date: Sun, 28 Dec 2008 09:23:11 -0500
From: Randy Bush <randy@psg.com>
To: TJ <trejrco@gmail.com>
In-Reply-To: <001a01c968f6$1c26acf0$547406d0$@com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
>> In practice, we realized that enabling IS-ISv6 on interfaces
>> already running IS-ISv4 was problematic without MT pre-
>> configured.
>> Those links surely lost IS-IS adjacency which threatened stability
>> of the network.
> Yup, that is the rub: if rolling out your v6 routing impacts your v4
> routing you are not "winning".
this is not very deep.
mark did point out how to avoid it, pointing out why mt was very useful
as opposed to just another bell and whistle. during a transition, in
fact, topologies are not congruent due to inability to have a flag
millisecond, a very very useful observation.
randy
