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IGMP Last Member Query Interval: 1.0<br />

IGMP Robustness Count: 2<br />

Derived Parameters:<br />

IGMP Membership Timeout: 260.0<br />

IGMP Other Querier Present Timeout: 255.0<br />

The output shows that each interface is in four IGMP groups. Use the show igmp<br />

group command to find out which groups the interfaces have joined:<br />

aviva@RouterA> show igmp group<br />

Interface: fe-0/0/1.0<br />

Group: 224.0.0.2<br />

Source: 0.0.0.0 Last reported by: 10.0.15.1<br />

Timeout: 64 Type: Dynamic<br />

Group: 224.0.0.5<br />

Source: 0.0.0.0 Last reported by: 10.0.15.1<br />

Timeout: 64 Type: Dynamic<br />

Group: 224.0.0.6<br />

Source: 0.0.0.0 Last reported by: 10.0.15.1<br />

Timeout: 63 Type: Dynamic<br />

Group: 224.0.0.22<br />

Source: 0.0.0.0 Last reported by: 10.0.15.1<br />

Timeout: 61 Type: Dynamic<br />

...<br />

This abridged output shows the IGMP groups for fe-0/0/1. The address 224.0.0.2 is<br />

the group for all routers on the local subnet, 224.0.0.5 and 224.0.0.6 are the groups<br />

for OSPF (OSPF is the IGP configured on these routers), and 224.0.0.22 is the IGMP<br />

group. (For a list of IP multicast groups, see http://www.iana.org/assignments/<br />

multicast-addresses.)<br />

16.2 Manually Establishing a PIM-SM RP<br />

Problem<br />

For PIM-SM to function, the PIM domain needs to have an RP. You want to assign<br />

one of the PIM routers to be the RP.<br />

Solution<br />

Manually configure which router is to be the RP. Set the local router to be the RP:<br />

[edit protocols pim]<br />

aviva@RouterA# set rp local address 192.168.13.1<br />

On the other routers, configure the address of the RP:<br />

[edit protocols pim]<br />

aviva@RouterB# set rp static address 192.168.13.1<br />

Manually Establishing a PIM-SM RP | 583<br />

This is the Title of the Book, eMatter Edition<br />

Copyright © 2008 O’Reilly & Associates, Inc. All rights reserved.

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