D-Link DGS-3200 SERIES Cli Manual page 248

max_reponse_time
robustness_variable
last_listener_query_interval The maximum amount of time between group-specific query
state
version <value 1-2>
Restrictions
You must have administrator privileges.
Example
To configure the MLD snooping querier:
DGS-3200 Series Layer 2 Gigabit Managed Switch CLI Manual
The maximum time in seconds to wait for reports from listeners. The
default setting is 10 seconds.
Provides fine-tuning to allow for expected packet loss on a subnet.
The value of the robustness variable is used in calculating the
following MLD message intervals:
• Group listener interval—Amount of time that must pass before a
multicast router decides there are no more listeners of a group on a
network. This interval is calculated as follows: (robustness variable *
query interval) + (1 * 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 * query interval) + (0.5 * query response interval).
• Last listener query count—Number of group-specific queries sent
before the router assumes there are no local listeners 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.
messages, including those sent in response to done-group messages.
You might lower this interval to reduce the amount of time it takes a
router to detect the loss of the last listener of a group.
This allows the switch to be specified as an MLD Querier (sends MLD
query packets) or a Non-Querier (does not send MLD query packets).
Set to enable or disable.
Specifies the version of MLD packet that will be sent by this port. If a
MLD packet received by the interface has a version higher than the
specified version, this packet will be dropped.
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