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To speed up the response of hosts to MLD queries and to avoid simultaneous timer expirations which
cause 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 equals the MLD last
listener query interval, which is set by the
last-listener-query-interval
command.
•
You can configure the parameters globally for all VLANs in MLD-snooping view or for a VLAN in
VLAN view. For a VLAN, the VLAN-specific configuration takes priority over the global
configuration.
Configuring parameters for MLD queries and responses globally
Step 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
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter VLAN view.
vlan vlan-id
N/A
3.
Set the MLD general query
interval for the VLAN.
mld-snooping
query-interval
interval
The default setting is 125
seconds.
4.
Set the maximum response
time for MLD general queries
in the VLAN.
mld-snooping
max-response-time interval
The default setting is 10 seconds.
5.
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 in a VLAN, 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 priority of MLD messages.