*** INE Vol 1 Multicast note. No ip mroute-cache and autorp listener.

Wanted to put a little marker to remember that on the router closest to the Receiver, you need to disable ip mroute-cache.

#no ip mroute-cache

on the interface pointing to the receiver router.

auto-rp listener - to be used in Sparse mode only - enables 224.0.1.39 and .40 the RP candidate and Mapping Agent to use Dense mode to get the RP mappings out to the other routers.