Inspecting Multicast Routing Table

router#

show ip mroute [group-address] [summary] [count] [active kbps]

Displays the contents of the IP multicast routing table

• summary: Displays a one-line, abbreviated summary of each entry in the IP multicast routing table.

• count: Displays statistics about the group and source, including number of packets, packets per second, average packet size, and bits per second.

• active: Displays the rate at which active sources are sending to multicast groups. Active sources are those sending at a rate specified in the kbps argument or higher. The kbps argument defaults to 4 kbps.

The show ip mroute command is the most useful command for determining the state of multicast sources and groups, as recognized from the selected router perspective.

The output of the command generally represents a part of the multicast distribution tree, with an incoming interface and a list of outgoing interfaces. The following options may be used:

■ Summary: Displays a one-line, abbreviated summary of each entry in the IP multicast routing table.

■ Count: Displays statistics about the group and source, including number of packets, packets per second, average packet size, and bits per second.

■ Active: Displays the rate at which active sources are sending to multicast groups. Active sources are those sending at a rate specified in the kbps argument or higher. The kbps argument defaults to 4 kbps.

7-50 Building Scalable Cisco Internetworks (BSCI) v3.0 © 2006 Cisco Systems, Inc.

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