Multicast Traffic on Backbones

Sun Jun 10 12:03:55 UTC 2001

	Most multicast backbone providers have links that show that they mBGP
with peers and offer MSDP as well. This allows for the customer on one
providers network to access a source on another providers network. Of course
there are issues with the 5 bit overlap in multicast address space, but it does
work. There are commercial companies that have registered/reserved particular
addresses for their applications as well. While I think that today the amount
of multicast traffic is low, it will continue to increase.

On Sat, 9 Jun 2001, Deepak Jain wrote:

>
> When multicast enabling a network, am I wrong in assuming that the routers
> will only multicast to their direct, end-user connections and peers (like an
> access router will only offer streams to its direct connections)? I am
> trying to figure out what advantages multicast-enabling a backbone has when
> the majority of customers are not multicast-peers of their upstream routers.
>