[Isis-wg] Question on TLV type 135

[Christian E. Hopps]

> > Also, how are we going to distinguish
> > internal and external reachability.
> 
>   There is no definition of internal or external routes in the draft.
>  An IP prefix is an IP prefix. If you see the same IP prefix as an
>  internal and an external prefix in your IGP, you already have
>  a big problem (redistribution feedback). Only doing making a
>  distinction between internal/external prefixes during route
>  installation is not going prevent you from problems.
> 
>   If you really want to prevent redistribution feedback, you
>  need to tag the origin of your prefix. If there is a real
>  interest to be able to do that, we have the sub-TLVs in TLV 135
>  to do things like route coloring/tagging.

But this means I have to implement sub-tlv's even though I'm not going
to do TE with the TLV.

:)

Chris.