28 Dec
2008
28 Dec
'08
9:10 a.m.
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?
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". /TJ