When you configure static groups on an interface on which you want to receive multicast
traffic, and specify that a number of multicast sources be automatically accepted, you
can also specify the number by which the address should be incremented for each source
accepted. This is useful when you want to test forwarding to multiple receivers without
having to configure each receiver separately and you do not want the source addresses
to be sequential.
In this example, you create group 233.252.0.1 and accept addresses 10.0.0.2, 10.0.0.4,
and 10.0.0.6 as the sources.
1. Configure the multicast source address increment by including the source-increment
statement and specifying the number by which the address should be incremented
for each source. The increment is specified in dotted decimal notation similar to an
IPv4 address.
[edit protocols igmp]
user@host# set interface fe-0/1/2 static group 233.252.0.1 source 10.0.0.2 source-count
3 source-increment 0.0.0.2
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 {
source-count 3;
source-increment 0.0.0.2;
}
}
}
}
3. After you have committed the configuration and after 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 sources 10.0.0.2, 10.0.0.4, and 10.0.0.6 have 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
Group: 233.252.0.1
Source: 10.0.0.4
Last reported by: Local
Timeout: 0 Type: Static
Group: 233.252.0.1
Source: 10.0.0.6
Last reported by: Local
Timeout: 0 Type: Static
Copyright © 2017, Juniper Networks, Inc.464
ACX Series Universal Access Router Configuration Guide
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