D-Link DES-3350SR Reference Manual page 129

config igmp_snooping querier
Parameters
Restrictions
Example usage:
To configure the igmp snooping:
DES-3350SR Layer 3 Gigabit Switch
<vlan_name 32> The name of the VLAN for which IGMP
snooping querier is to be configured.
all – Selecting this parameter will configure the IGMP snooping
querier for all VLANs on the switch.
query_interval <sec 1-65535>
seconds between general query transmissions. The default
setting is 125 seconds.
max_response_time <sec 1-25>
seconds to wait for reports from members. The default setting is
10 seconds.
robustness_variable <value 1-255>
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>
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]
IGMP Querier or Non-querier.
Only administrator-level users can issue this command.
125
Specifies the amount of time in
Specifies the maximum time in
Provides fine-tuning to
The maximum
Allows the switch to be specified as an