Manually Configuring IGMP

Table of contents:

Problem

The JUNOS software automatically turns on IGMP Version 2 when you configure PIM-SM. However, you want to use SSM, which requires IGMP Version 3.

Solution

Enable IGMPv3 on the desired router interfaces:

	[edit protocols]
	aviva@RouterA# set igmp interface all version 3

Discussion

For PIM-SM, you normally use IGMPv2, which is automatically enabled on all LAN interfaces when you configure PIM-SM. SSM requires that the router run IGMPv3, which supports source filtering so the host can include and exclude specific sources when requesting multicast packets.

To use IGMPv3, simply configure it on all the desired interfaces. This recipe configures IGMPv3 on all the routers interfaces. Use the show igmp interface command to verify that Version 3 is running:

	aviva@RouterA> show igmp interface
	Interface: fe-0/0/0.0
	 Querier: 172.19.121.112
	 State: Up Timeout: 188 Version: 3 Groups: 4
	Interface: fe-0/0/1.0
	 Querier: 10.0.15.1
	 State: Up Timeout: 216 Version: 3 Groups: 0
	Interface: se-0/0/3.0
	 Querier: 10.0.16.1
	 State: Up Timeout: None Version: 3 Groups: 0
	Interface: se-0/0/2.0
	 Querier: 10.0.21.1
	 State: Up Timeout: None Version: 3 Groups: 2

	Configured Parameters:
	IGMP Query Interval: 125.0

	 
IGMP Query Response Interval: 10.0
	 
IGMP Last Member Query Interval: 1.0
	IGMP Robustness Count: 2

	Derived Parameters:
	IGMP Membership Timeout: 260.0
	IGMP Other Querier Present Timeout: 255.0

The output confirms that the three networking interfaces on this router are all running IGMPv3.


Router Configuration and File Management

Basic Router Security and Access Control

IPSec

SNMP

Logging

NTP

Router Interfaces

IP Routing

Routing Policy and Firewall Filters

RIP

IS-IS

OSPF

BGP

MPLS

VPNs

IP Multicast



JUNOS Cookbook
Junos Cookbook (Cookbooks (OReilly))
ISBN: 0596100140
EAN: 2147483647
Year: 2007
Pages: 290
Authors: Aviva Garrett

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