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PIM-SM (Sparse Mode)

Displaying PIM-SM Data and Configuration Settings

Displaying Current PIM Entries Existing In the Multicast

Routing Table

Syntax: show ip pim mroute

Shows PIM-specific information from the IP multicast

routing table (IP MRT). When invoked without parameters,

lists all PIM entries currently in the router’s IP MRT.

Group Address: Lists the multicast group addresses currently

active on the router.

Source Address: Lists the multicast source address for each

Group Address.

Metric: Indicates the path cost upstream to the multicast

source. Used when multiple multicast routers contend to

determine the best path to the multicast source. The lower the

value, the better the path. This value is set to 0 (zero) for

directly connected routes.

Metric Pref: Used when multiple multicast routers contend to

determine the path to the multicast source. When this value

differs between routers, PIM selects the router with the lowest

value. If Metric Pref is the same between contending multicast

routers, then PIM selects the router with the lowest Metric

value to provide the path for the specified multicast traffic.

This value is set to 0 (zero) for directly connected routes.

(Metric Pref is based on the IP routing protocol in use: RIP,

OSPF, or static routing. Also, different vendors may assign

different values for this setting.)

This output shows the routing switch is receiving two multicast groups from an upstream

device at 27.27.30.2. The “0” metric shows that the routing switch is directly connected to

the multicast source.

ProCurve# show ip pim mroute

PIM IP Multicast Route Entries

Group Address Source Address Metric Metric Pref

---------------- ---------------- ------- -----------

234.43.209.12 100.150.1.0 2 1

235.22.22.12 100.100.25.0 0 1

Figure 4-14. Example Showing a Router Detecting two Multicast Groups from a

Directly Connected Multicast Server

4-52

1 2 ... 147 148 149 150 151 152 153 154 155 156 157 ... 359 360

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