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IGMP Configuration Guidelines

To configure the Internet Group Management Protocol (IGMP), include the igmp statement:

igmp {
interface interface-name {
disable;
immediate-leave;
promiscuous-mode;
ssm-map ssm-map-name;
static {
group group {
source source;
}
}
version version;
}
query-interval seconds;
query-last-member-interval seconds;
query-response-interval seconds;
robust-count number;
traceoptions {
file name <replace> <size size> <files number > <no-stamp>
<world-readable | no-world-readable>;
flag flag <flag-modifier > <disable>;
}
}

You can include this statement at the following hierarchy levels:

For an overview of logical routers and a detailed example of logical router configuration, see the logical routers chapter of the JUNOS Feature Guide.

By default, IGMP is automatically enabled on all interfaces on which you configure PIM and broadcast interfaces on which you configure the Distance Vector Multicast Routing Protocol (DVMRP).

This chapter describes the following tasks for configuring IGMP:

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