Cisco Catalyst 2960 Series, Configuration Manual

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Configuring MLD Snooping Queries (CLI)
Beginning in privileged EXEC mode, follow these steps to configure MLD snooping query characteristics
for the switch or for a VLAN:
DETAILED STEPS
Purpose Command or Action
Enters global configuration mode. configure terminal
Example:
Switch# configure terminal
Step 1
(Optional) Sets the number of queries that are sent before switch
will deletes a listener (port) that does not respond to a general query.
The range is 1 to 3; the default is 2.
ipv6 mld snooping robustness-variable value
Example:
Switch(config)#
ipv6 mld snooping
robustness-variable 3
Step 2
(Optional) Sets the robustness variable on a VLAN basis, which
determines the number of general queries that MLD snooping sends
ipv6 mld snooping vlan
vlan-id
robustness-variable
value
Step 3
before aging out a multicast address when there is no MLD report
Example:
Switch(config)# ipv6 mld snooping vlan 1
robustness-variable 3
response. The range is 1 to 3; the default is 0. When set to 0, the
number used is the global robustness variable value.
(Optional) Sets the number of MASQs that the switch sends before
aging out an MLD client. The range is 1 to 7; the default is 2. The
queries are sent 1 second apart.
ipv6 mld snooping last-listener-query-count
count
Example:
Switch(config)# ipv6 mld snooping
last-listener-query-count 7
Step 4
(Optional) Sets the last-listener query count on a VLAN basis. This
value overrides the value configured globally. The range is 1 to 7;
ipv6 mld snooping vlan vlan-id
last-listener-query-count count
Step 5
the default is 0. When set to 0, the global count value is used.
Queries are sent 1 second apart.
Example:
Switch(config)# ipv6 mld snooping vlan 1
last-listener-query-count 7
(Optional) Sets the maximum response time that the switch waits
after sending out a MASQ before deleting a port from the multicast ipv6 mld snooping last-listener-query-interval
interval
Step 6
group. The range is 100 to 32,768 thousands of a second. The
default is 1000 (1 second).
Example:
Switch(config)# ipv6 mld snooping
last-listener-query-interval 2000
(Optional) Sets the last-listener query interval on a VLAN basis.
This value overrides the value configured globally. The range is 0 ipv6 mld snooping vlan vlan-id
last-listener-query-interval interval
Step 7
Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)
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How to Configure IPv6 MLD Snooping