All things related to multicast

["Richard Murphy" <>]

I have followed the Abilene cookbook on setting up multicasting and all
looks OK on my border router. However, machines on a router connected to
the border router cannot join any multicast groups. The border router is
logging these PIM-INVALID_RP_JOIN messages. I have read the cisco note
on fixing this issue and it leads to this question:

How does auto-rp work if the Abilene recommended filter for multicast
groups
includes 224.0.1.39 and 224.0.1.40 as denies? Are RPs something that is
used in lieu of MSDP or alone with MSDP? Both routers have pim
sparse-mode set, but the second router uses some static routes, not iBGP
and does not use MSDP either.

Thanks to those who have been down this path already!

Richard Murphy