All things related to multicast

[Toerless Eckert <>]

Are there any statistics that could tell us about the rate of adoption
of MBGP for actual active multicast flows ? Eg: Of all the
(S,G) states on a router, what percentage of those S)ource prefixes
is learned via BGP vs. MBGP ? - Yes, i know that there are a lot
of non-MBGP BGP prefixes, but do they actually contribute to active
multicast sources ever ? And if so, what are the main reasons for
non-use of MBGP in those places ?

Thanks
        Toerless