If the equipment doesn't support IS-IS, then you can't expect it to support IS-IS MT ;) Anyway, making IS-IS mandatory makes absolutely no sense; it's rarely used in Enterprise environments. What we could do is to change the current requirement into "If the equipment supports IS-IS routing protocol, it MUST support IS-IS MT ..." (don’t cut/paste, use the wording from the document ;) Ivan
Currently, this is mandatory only "If MPLS Traffic Engineering is used in combination with IS-IS routing protocol"
What percentage of equipment we exclude as routers if we make this unconditionally mandatory?
I know for at least Mikrotik routers are excluded, as they do not support IS-IS at all (and they are quite used in small/medium companies environment).
Opinions?
Cheers, Jan