D-Link TM DES-6500 Enable igmpsnooping, Lastmemberqueryinterval sec 1-25 − The maximum amount

xStack DES-6500 Modular Layer 3 Chassis Ethernet Switch CLI Manual

config igmp_snooping querier

	interval) + (1 x query response interval).
	• Other querier present interval—Amount of time that must
	pass before a multicast router decides that there is no
	longer another multicast router that is the querier. This
	interval is calculated as follows: (robustness variable x
	query interval) + (0.5 x query response interval).
	• Last member query count—Number of group-specific
	queries sent before the router assumes there are no
	local members of a group. The default number is the
	value of the robustness variable.
	• By default, the robustness variable is set to 2. You might
	want to increase this value if you expect a subnet to be
	lossy.
	last_member_query_interval <sec 1-25> − The maximum amount
	of time between group-specific query messages, including those
	sent in response to leave-group messages. Lower this interval to
	reduce the amount of time it takes a router to detect the loss of
	the last member of a group.
	state [enabled disabled] − Allows the Switch to be specified as
	an IGMP Querier or Non-querier.
Restrictions	Only administrator-level users can issue this command.

Example usage:

To configure the igmp snooping:

DES-6500:4#config igmp_snooping querier default query_interval 125 state enabled Command: config igmp_snooping querier default query_interval 125 state enabled

Success.

DES-6500:4#

enable igmp_snooping

Purpose	Used to enable IGMP snooping on the Switch.
Syntax	enable igmp_snooping {forward_mcrouter_only}
Description	This command allows you to enable IGMP snooping on the
	Switch. If forward_mcrouter_only is specified, the Switch will
	only forward all multicast traffic to the multicast router, only.
	Otherwise, the Switch forwards all multicast traffic to any IP
	router.
Parameters	forward_mcrouter_only − Specifies that the Switch should only
	forward all multicast traffic to a multicast-enabled router.
	Otherwise, the Switch will forward all multicast traffic to any IP
	router.
Restrictions	Only administrator-level users can issue this command.

Example usage:

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