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Configuring IP Multicast Routing
Monitoring and Maintaining IP Multicast Routing Configuration Task List
IPC-447
Cisco IOS IP Configuration Guide
Using IP Multicast Heartbeat
The IP multicast heartbeat feature enables you to monitor the delivery of IP multicast packets and to be
alerted if the delivery fails to meet certain parameters.
Although you can also use MRM to monitor IP multicast, you can perform the following tasks with IP
multicast heartbeat that you cannot do with MRM:
• Generate an SNMP trap
• Monitor a production multicast stream
When IP multicast heartbeat is enabled, the router monitors IP multicast packets destined for a particular
multicast group at a particular interval. If the number of packets observed is less than a configured
minimum amount, the router sends an Simple Network Management Protocol (SNMP) trap to a specified
network management station to indicate a loss of heartbeat exception.
To configure IP multicast heartbeat, use the following commands in global configuration mode:
See the “IP Multicast Heartbeat Example” section later in this chapter for an example of how to
configure IP multicast heartbeat.
For more information on the information contained in IP multicast SNMP notifications, refer to the
Cisco IOS Configuration Fundamentals Command Reference.
Router# show ip pim neighbor [type number]
Lists the PIM neighbors discovered by the router.
Router# show ip pim rp [mapping | metric] [rp-address]
Displays the RP routers associated with a sparse mode
multicast group.
Router# show ip pim vc [group-address | name] [type
number]
Displays ATM VC status information for multipoint VCs
opened by PIM.
Router# show ip rpf {source-address | source-name}
[metric]
Displays how the router is doing RPF (that is, from the
unicast routing table, DVMRP routing table, or static
mroutes). Also displays the unicast routing metric.
Router# show ip rtp header-compression [type number]
[detail]
Displays RTP header compression statistics.
Router# show ip sap [group | “session-name” | detail]
Displays the SAP cache.
Command Purpose
Command Purpose
Step 1
Router(config)# ip multicast-routing
Enables IP multicast routing.
Step 2
Router(config)# snmp-server host host traps
community-string
Specifies the recipient of an SNMP notification operation.
Step 3
Router(config)# snmp-server enable traps
ipmulticast
Enables the router to send IP multicast traps.
Step 4
Router(config)# ip multicast heartbeat
group-address minimum-number window-size
interval
Enables the monitoring of the IP multicast packet delivery.