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To speed up the response of hosts to MLD queries and to avoid simultaneous timer expirations from
causing MLD report traffic bursts, you must correctly set the maximum response time.
• The maximum response time for MLD general queries is set by the max-response-time command.
• The maximum response time for MLD multicast-address-specific queries is the same as the MLD last
listener query interval, which is set by the last-listener-query-interval command.
You can configure parameters for MLD queries and responses either for the current VLAN in VLAN view
or globally for all VLANs in MLD-snooping view. If the configurations are made in both VLAN view and
MLD-snooping view, the configuration made in VLAN view takes priority.
Configuring parameters for MLD queries and responses globally
Ste
Command
Remarks
1. Enter system view.
system-view N/A
2. Enter MLD-snooping view.
mld-snooping N/A
3. Set the maximum response
time for MLD general queries.
max-response-time interval The default setting is 10 seconds.
4. Set the MLD last listener query
interval.
last-listener-query-interval interval
The default setting is 1 second.
Configuring parameters for MLD queries and responses in a VLAN
Ste
Command
Remarks
1. Enter system view.
system-view N/A
2. Enter VLAN view.
vlan vlan-id N/A
3. Set the maximum response
time for MLD general queries in
the VLAN.
mld-snooping max-response-time
interval
The default setting is 10 seconds.
4. Set the MLD last listener query
interval in the VLAN.
mld-snooping
last-listener-query-interval interval
The default setting is 1 second.
Configuring parameters for MLD messages
This section describes how to configure parameters for MLD messages.
Configuration prerequisites
Before you configure parameters for MLD messages, complete the following tasks:
• Enable MLD snooping for the VLAN.
• Determine the source IPv6 address of MLD general queries.
• Determine the source IPv6 address of MLD multicast-address-specific queries.
• Determine the source IPv6 address of MLD reports.
• Determine the source IPv6 address of MLD done messages.
• Determine the 802.1p precedence of MLD messages.