xStack Gigabit Layer 3 Switch Command Line Interface Manual
config igmp_snooping querier
querier for all VLANs on the Switch.
query_interval <sec 1-65535>
−
Specifies the amount of time in
seconds between general query transmissions. The default
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:
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.
Restrictions Only
administrator-level users can issue this command.
•
Group membership 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.
Example usage:
To configure the igmp snooping:
DGS-3324SRi:4#config igmp_snooping querier default query_interval 125
state enable
Command: config igmp_snooping querier default query_interval 125 state
enable
Success.
DGS-3324SRi:4#
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