D-Link DGS-3212SR Command Line Interface Reference Manual page 149

config igmp_snooping querier
Restrictions
Example usage:
To configure the igmp snooping:
DGS-3212SR:4#config igmp_snooping querier default query_interval 125
state enable
Command: config igmp_snooping querier default query_interval 125
state enable
Success.
DGS-3212SR:4#
DGS-3212SR Layer 3 Gigabit Switch
setting is 125 seconds.
max_response_time <sec 1-25> − Specifies the maximum time in
seconds to wait for reports from members. The default setting is
10 seconds.
robustness_variable <value 1-255> − Provides fine-tuning to
allow for expected packet loss on a subnet. The value of the
robustness variable is used in calculating the following IGMP
message intervals:
•
Group member interval—Amount of time that must pass
before a multicast router decides there are no more
members of a group on a network. This interval is
calculated as follows: (robustness variable x query
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. You
might 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 [enable | disable] − Allows the switch to be specified as an
IGMP Querier or Non-querier.
Only administrator-level users can issue this command.
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