network along with the multicast group assignments that each RP advertises.
The Mapping Agent will then tell all the routers within the multicast net-
work which RP should be used for their source.
ceding section. The scope defines the TTL value for the discovery. After the
TTL is reached, the discovery packets are dropped. Here is an example:
CNTL/Z.
that actually assigns to the router the role of RP Mapping Agent.
RP, although it doesn't have to be. The Mapping Agent's role is to learn of
all of the deployed rendezvous points throughout the network and then
advertise which groups are available via the closest RP for all multicast-
enabled routers in the network.
scope of the IP multicast network. As you learned in Chapter 9, limiting the
scope of a multicast network is based on the TTL value in the multicast
packet. Because this command is used to create a boundary, it must be exe-
cuted on each border interface.
straightforward and the ttl value that is used is up to the discretion of the
network administrator. The range of valid values for this option is between