Re: Why MSDP?

[Ali Boudani <aboudani@irisa.fr>]

Hello,
I think I understand but just correct me if I am wrong.

the multicast topology advertised by MBGP is not the Trees but it is just
advertising the network reachability of the connected multicast routers. that
mean instead of advertising all the routes in a domain , we just advertise the
routes between multicast routers and subnetworks.
MBGP is not advertising the trees in the domains and that is why we should send
another kind messages when a source appers. because this source will construct a
new multicast tree in the domain using PIM-SM or other protocol.
Of course, MBGP like BGP cant support a lot of changes in the topology in a
domain and that is why , multicast trees (reachability) should not transported
via MBGP.
we should found something else (and that is why we are using MSDP)

Is that true? (I hope I am right :-) )

thanx
Ali