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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