Monitoring And Maintaining Ip Multicast Routing; Displaying System And Network Statistics - Cisco 4500M Software Manual

Chapter 25 Understanding and Configuring IP Multicast
When an interface is treated in dense mode, it is populated in a multicast routing table's outgoing
interface list when either of the following is true:
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When an interface is treated in sparse mode, it is populated in a multicast routing table's outgoing
interface list when either of the following is true:
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To enable PIM to operate in the same mode as the group, perform this task:
Command
Switch(config-if)# ip pim
sparse-dense-mode

Monitoring and Maintaining IP Multicast Routing

You can remove all contents of a particular cache, table, or database. You also can display specific
statistics. The following sections describe how to monitor and maintain IP multicast:
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Displaying System and Network Statistics

You can display specific statistics, such as the contents of IP routing tables and databases. Information
provided can be used to determine resource utilization and solve network problems. You can also display
information about node reachability and discover the routing path your device's packets are taking
through the network.
To display various routing statistics, you can perform any of these tasks:
Command
Switch# ping [ group-name | group-address ]
Switch# show ip mroute [ hostname |
group_number ]
Switch# show ip pim interface [ type number ]
[count]
Switch# show ip interface
OL-6696-01
When there are members or DVMRP neighbors on the interface
When there are PIM neighbors and the group has not been pruned
When there are members or DVMRP neighbors on the interface
When an explicit join has been received by a PIM neighbor on the interface
Displaying System and Network Statistics, page 25-15
Displaying the Multicast Routing Table, page 25-16
Displaying IP MFIB, page 25-18
Displaying IP MFIB Fast Drop, page 25-19
Displaying PIM Statistics, page 25-20
Clearing Tables and Databases, page 25-20
Monitoring and Maintaining IP Multicast Routing
Purpose
Enables PIM to operate in sparse or dense mode,
depending on the group.
Purpose
Sends an ICMP Echo Request to a multicast
group address.
Displays the contents of the IP multicast routing
table.
Displays information about interfaces configured
for PIM.
Displays PIM information for all interfaces.
Software Configuration Guide—Release 12.2(25)EW
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