xStack DGS-3612G Layer 3 Gigabit Ethernet Managed Switch CLI Manual
config mld_snooping querier
last_listener_query_interval <sec 1-25> -
The maximum amount of time to be set
between group-specific query messages. This interval may be reduced to lower the
amount of time it takes a router to detect the loss of a last listener group. The user may
set this interval between 1 and 25 seconds with a default setting of 1 second.
state [enable | disable] –
Enabling the querier state will
set the Switch as a MLD
querier and disabling it will set it as a Non-querier. The default setting is enabled.
Restrictions None.
Example usage:
To configure the MLD snooping querier:
DGS-3612G:4#config mld_snooping querier vlan default query_interval 125 state enable
Command : config mld_snooping querier vlan default query_interval 125 state enable
Success.
DGS-3612G:4#
NOTE:
The robustness variable of the MLD snooping querier is used in creating the
following MLD message intervals:
Last Listener Query Count
– This is the amount of group-specific queries sent before the
router assumes there are no local listeners in this group. The default value is the value of
the robustness variable.
Group Listener Interval
– This is the amount of time that must pass before a multicast
router decides that there are no more listeners present of a group on a network. Calculated
as (robustness variable * query interval ) + (1 * query interval).
Querier Present Interval
- This is the amount of time that must pass before a multicast
router decides that there are no other querier devices present. Calculated as (robustness
variable * query interval) + (0.5 * query response interval).
show mld_snooping
Purpose
Used to display the current status of the MLD snooping function on the Switch.
Syntax
show mld_snooping {vlan<vlan_name 32}
Description
This command allows the user to display the current status of the MLD
snooping function on the Switch.
Parameters
vlan <vlan_name 32>
−
The name of the VLAN for which to view the MLD
snooping configurations.
If no parameter is specified, the Switch will display all current MLD snooping
configurations.
Restrictions None.
Example usage:
To display the MLD snooping settings
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