Reading the draft quickly, here's bunch of observations "
An OSPF router supporting this specification MUST be able to advertise and interpret at least one 32-bit tag for all type of prefixes. An OSPF router supporting this specification MAY be able to advertise and propagate multiple 32-bit tags. The maximum tags that an implementation supports is a local matter depending upon supported applications using prefix tags. " Since different implementations may support different amount of tags I see that the draft says " When propagating multiple tags, the order of the the tags SHOULD be preserved. " this is IMO not good enough in case where two nodes advertise same prefix with multiple tags, possibly differing or in different order. Some kind of ordering is necessary then as well AFAIS. " This sub-TLV will carry one or more 32-bit unsigned integer values that will be used as administrative tags. " IMO behavior when none are carried nees to be specified if this is mandated. is that a MUST in fact? Moreover we already have a tag in OSPFv2 on type-5 and type-7 and opaque can advertise more tags. How do those interact ? that's it for the first thanks -- tony
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