Users Guide

Table Of Contents
(*, 224.1.1.1), uptime 00:05:44, expires 00:00:15, RP 182.190.168.224, flags: SCJ
Incoming interface: port-channel12, RPF neighbor 194.1.1.1
Outgoing interface list:
vlan2001 Forward/Sparse 00:05:44/Never
(201.1.1.1, 224.1.1.1), uptime 00:02:58, expires 00:00:31, flags: CT
Incoming interface: port-channel11, RPF neighbor 193.1.1.1
Outgoing interface list:
vlan2001 Forward/Sparse 00:02:58/Never
R4# show ip pim vrf red mcache
PIM Multicast Routing Cache Table
(*, 224.1.1.1)
Incoming interface : port-channel12
Outgoing interface list :
vlan2001
(201.1.1.1, 224.1.1.1)
Incoming interface : port-channel11
Outgoing interface list :
vlan2001
R4# show ip pim vrf red summary
Entries in PIM-TIB/MFC: 3/2
Active Modes:
PIM-SM
Interface summary:
4 active PIM interfaces
0 passive PIM interfaces
2 active PIM neighbor
TIB Summary:
1/1 (*,G) entries in PIM-TIB/MFC
1/1 (S,G) entries in PIM-TIB/MFC
1/0 (S,G,Rpt) entries in PIM-TIB/MFC
1 RP
1 sources
Message Summary:
81268/13033 Joins/Prunes sent/received
0 Null Register messages received
0/0 Register-stop messages sent/received
Data path event summary:
0/0 pim-assert messages sent/received
0/0 register messages sent/received
Anycast RP using PIM
PIM Anycast RP provides load balancing and redundancy capabilities for Rendezvous Point (RP) routers in a multicast domain.
This feature allows you to configure two or more RPs with same IP address (RP address) in a multicast group. The shared RP
address is advertised in Interior Gateway Protocol (IGP). The RP routers that share the same RP address form an Anycast RP
set. Each router in the Anycast RP set is configured with two IP addresses: a shared RP address on the Loopback interface
and a separate, unique IP address. The unique IP address is used for communication between the RPs. The Loopback address
must be reachable to all PIM routers in the multicast domain. This configuration allows the RPs to share the load for source
registration and to act as back-up routers for each other.
PIM enables multiple RPs to inform each other about active sources. When a source registers with an RP, that RP sends a PIM
register message to all other members of the RP set informing that there is a new active source. Thus, each RP in the multicast
domain knows about the active sources of the other RPs.
IGP protocols such as OSPF routes the sources and receivers to the RPs with the best route. Packets sent to the RP address
are delivered to the nearest RP with this address. When an RP with the best route fails, IGP automatically recalculates the best
Multicast
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