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Enabling IGMP Static Group Membership

You can create IGMP static group membership to test multicast forwarding without a receiver host. When you enable IGMP static group membership, data is forwarded to an interface without receiving membership reports from host members.

When you configure static IGMP group entries on point-to-point links that connect routers to a rendezvous point (RP), the static IGMP group entries do not generate join messages toward the RP.

If a source address is specified in a multicast group that is statically configured, the IGMP version must be set to IGMPv3.

To configure IGMP static membership, include the static statement. Then specify the group, or the group and its source or sources:




static {



group group {

source source; 
}


}

Note: You must specify a unique address for each group.

You can include this statement at the following hierarchy levels:

[edit protocols igmp interface interface-name]
[edit logical-systems logical-system-name protocols igmp interface interface-name]

Example: IGMP Static Group Membership

Configure IGMP static membership on the interface where the data is to be forwarded, and specify the groups 239.255.0.1 and 232.1.1.1 with the sources 10.1.1.1 and 10.1.1.2:



[edit]
protocols {



igmp {



interface ge-1/1/1.0 {



static {
group 239.255.0.1;


group 232.1.1.1 {

source 10.1.1.1;

source 10.1.1.2;
}


}


}


}


}

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