Table 337: Components Of The Igmp Snooping Topology - Juniper JUNOS OS 10.4 - FOR EX REV 1 Manual

Complete Software Guide for Junos
Overview and Topology
Configuration
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Step-by-Step
Procedure
2544
®
OS for EX Series Ethernet Switches, Release 10.4
IGMP snooping controls multicast traffic in a switched network. With IGMP snooping
enabled, an EX Series switch monitors the IGMP transmissions between a host and a
multicast router to keep track of the multicast groups and associated member ports.
The switch uses this information to make intelligent decisions and forward multicast
traffic to the intended destination interfaces.
You can configure IGMP snooping on all interfaces in a VLAN or on individual interfaces.
This example shows how to configure IGMP snooping on an EX Series switch.
The configuration setup for this example includes the VLAN
Table 337 on page 2544 shows the components of the topology for this example.

Table 337: Components of the IGMP Snooping Topology

Properties
Switch hardware
VLAN name
Interfaces in employee-vlan
Multicast IP address for employee-vlan
In this example, the switch is initially configured as follows:
IGMP snooping is disabled on the VLAN.
To configure basic IGMP snooping on a switch:
To quickly configure IGMP snooping, copy the following commands and paste them into
the switch terminal window:
[edit protocols]
set igmp-snooping vlan employee-vlan
set igmp-snooping vlan employee-vlan interface ge-0/0/1 group-limit 50
set igmp-snooping vlan employee-vlan immediate-leave
set igmp-snooping vlan employee-vlan interface ge-0/0/3 static group 225.100.100.100
set igmp-snooping vlan employee-vlan interface ge-0/0/2 multicast-router-interface
set igmp-snooping vlan employee-vlan robust-count 4
Configure IGMP snooping:
Enable and configure IGMP snooping on the VLAN
1.
[edit protocols]
user@switch# set igmp-snooping vlan employee-vlan
Configure the limit for the number of multicast groups allowed on the
2.
interface to 50.
employee-vlan
Settings
One EX3200-24T switch
employee-vlan , tag 20
ge-0/0/1 , ge-0/0/2 , ge-0/0/3
225.100.100.100
employee-vlan
Copyright © 2010, Juniper Networks, Inc.
on the switch.
:
ge-0/0/1