When you create IGMP static group membership to test multicast forwarding on an
interface on which you want to receive multicast traffic, and your network is operating
in source-specific multicast (SSM) mode, you can also specify that the multicast source
address be accepted. This is useful when you want to test forwarding to multicast
receivers from a specific multicast source.
If you specify a group address in the SSM range, you must also specify a source.
If a source address is specified in a multicast group that is statically configured, the IGMP
version on the interface must be set to IGMPv3. IGMPv2 is the default value.
In this example, you create group 233.252.0.1 and accept IP address 10.0.0.2 as the only
source.
1. On the DR, configure the source address by including the source statement and
specifying the IPv4 address of the source host.
[edit protocols igmp]
user@host# set interface fe-0/1/2 static group 233.252.0.1 source 10.0.0.2
2. After you commit the configuration, use the show configuration protocol igmp command
to verify the IGMP protocol configuration.
user@host> show configuration protocol igmp
interface fe-0/1/2.0 {
version 3;
static {
group 233.252.0.1 {
source 10.0.0.2;
}
}
}
3. After you have committed the configuration and the source is sending traffic, use the
show igmp group command to verify that static group 233.252.0.1 has been created
and that source 10.0.0.2 has been accepted.
user@host> show igmp group
Interface: fe-0/1/2
Group: 233.252.0.1
Source: 10.0.0.2
Last reported by: Local
Timeout: 0 Type: Static
Copyright © 2017, Juniper Networks, Inc.462
ACX Series Universal Access Router Configuration Guide
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