HP 7000 dl Router manual Copyright 2005 Hewlett-Packard Development Company, L.P 751

SROS Command Line Interface Reference Guide PPP Interface Configuration Command Set

ip igmp

Use the ip igmp command to configure multicasting-related functions for the interface.

Syntax Description

helper-enable	Tells this downstream interface to use the global helper address.
immediate-leave	If only one host (or IGMP snooping switch) is connected to the interface,
	when a leave is received, multicast of that group is immediately terminated
	as opposed to sending a group query and timing out the group if no device
	responds. Works in conjunction with ip igmp last-member-query-interval.
	Applies to all groups when configured.
last-member-query-interval	This command controls the timeout used to detect whether any group
<milliseconds>	receivers remain on an interface after a receiver leaves a group. If a receiver
	sends a leave group message (IGMP Version 2), the router sends a
	group-specific query on that interface. After twice the time specified by this
	command plus as much as one second longer, if no receiver responds, the
	router removes that interface from the group and stops sending that group's
	multicast packets to the interface. Range: 100 to 65535 ms. Default: 1000
	ms.
querier-timeout <seconds>	Number of seconds that the router waits after the current querier’s last query
	before it takes over as querier (IGMP V2). Range: 60-300 seconds. Default:
	2x the query-interval value.
query-interval	Interval at which IGMP queries are sent on an interface. Host query
<seconds >	messages are addressed to the all-hosts multicast group with an IP TTL
	of 1. The router uses queries to detect whether multicast group members
	are on the interface and to select an IGMP designated router for the
	attached segment (if more than one multicast router exists). Only the
	designated router for the segment sends queries. For IGMP V2, the
	designated router is the router with the lowest IP address on the segment.
	Range: 0 to 65535 seconds. Default: 60 seconds.
query-max-response-time	Maximum response time advertised by this interface in queries when using
<seconds>	IGMP V2. Hosts are allowed a random time within this period to respond,
	reducing response bursts. Default: 10 seconds.
static-group	Configures the router's interface to be a statically-connected member of the
<group-address>	specified group. Packets received on the correct RPF interface are
	forwarded to this interface regardless of whether any receivers have joined
	the specified group using IGMP.
version [1 2]	Sets the interface’s IGMP version. The default setting is version 2.

Command Modes

(config-interface)#	Interface Configuration Mode
	Valid interfaces include: Ethernet, VLAN, virtual Frame Relay, virtual PPP, and
	loopback interfaces.

5991-2114 © Copyright 2005 Hewlett-Packard Development Company, L.P. 751