IPv6: IS-IS or OSPFv3

Mikael Abrahamsson swmike at swm.pp.se
Sat Dec 27 18:42:21 UTC 2008

On Sat, 27 Dec 2008, Randy Bush wrote:

> as one who has been burned when topologies are not congruent, i gotta 
> ask. if i do not anticipate v4 and v6 having different topologies, and 
> all my devices are dual-capable, would you still recommend mt for other 
> than future-proofing?

Personally, if my v4 and v6 topologies are not different, I'd run ISIS and 
not run MT. MT for me is to make v4 and v6 have different control planes 
(even though it's using the same protocol), thus I see little difference 
in running OSPFv3+ISIS, or running ISIS-MT for v4+v6.

I argue that it's better to have different control planes for v4 and v6 
and make it obvious (OSPv3 / ISIS), than to use ISIS-MT and "obfuscate".

Mikael Abrahamsson    email: swmike at swm.pp.se

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