[c-nsp] pros and cons for IPTV multicast in rosen-mvpn vs GRT

[Oliver Boehmer (oboehmer)]

>Are there any cons for running IPTV in draft-rosen-mvpn as opposed to
>global
>routing table

current implementation makes it generally easier to reduce
loss-of-connectivity after link/node failures using IGP Fast Convergence
compared to BGP-based convergence when the mcast sources/TV headends are
visible in BGP. You can also use p2mp-TE-FRR when mcast is in the global
routing table (not sure if things have changed there). MoFRR is also
targeted for PIM deployments in the global table, and some live-live
approaches might not work as well if the sources aren't visible from the
core/P nodes.

Why do you consider putting it into a VRF?

I acknowledge that reasoning is highly dependent on specific network
topology and requirements..

	oli