Advertising RP Group Assignments

Advertising RP Group Assignments
From each RP, a statement needs to be added that assigns and advertises multicast groups to
that RP. The multicast groups are then advertised so the RP Mapping Agent can keep track of
which RP hosts which multicast groups and resolve conflicts when necessary.
The syntax for the command is ip pim send-rp-announce type number scope ttl
group_list access_list_number. The command is entered in global configuration mode.
The first two options, type and number, are the interface type and number that indicate the RP
IP address. scope defines the boundary of the RP advertisement by using a high TTL value that
will be effectively blocked by interfaces with the TTL threshold set. The group_list uses the
specified access list to determine which multicast group ranges the RP is allowed to announce.
Here is an example of the command as well as a valid access list:
Terry_3640#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Terry_3640(config)#access-list 5 permit 224.0.0.0 0.0.255.255
Terry_3640(config)#ip pim send-rp-announce fastethernet4/0 scope 230
➥group-list 5
Terry_3640(config)#^Z
Terry_3640#
Terry_3640#write terminal
. . .
!
ip pim send-rp-announce FastEthernet4/0 scope 230 group-list 5
!
access-list 5 permit 224.0.0.0 0.0.255.255
!
. . .