[c-nsp] FAT PW between 7600 - ASR9K

[Oliver Boehmer (oboehmer)]

George,

>Oliver, since the documentation is very very limited, I'd appreciate if
>you could provide some info on how each PE will identify the flow labels.
>Is there a predefined range that is used only for the flow labels as Phil
>previously mentioned?

you can check http://tools.ietf.org/html/rfc6391 how this works, there are
no constraints on the flow label value other than it must not be a
reserved label value (0-15). The label value is only significant for the
encapsulating/ingress PE, it just ensures to allocate and use the same
label for all indivisible flows, to ensure those flows are sent via the
same ECMP path. Section 3 of the RFC talks a bit about who the PE should
allocate and assign labels. The egress PE just needs to know that there is
a flow label present on the PW (statically or signalled via LDP), and it
just pops it.

hope this helps..

	oli