388
Step
Command
Remarks
5.
Configure the startup query
count.
mld startup-query-count
value
By default, the startup query count
is the same as the MLD querier's
robustness variable.
6.
Configure the MLD query
interval.
mld timer query
interval
125 seconds by default.
7.
Configure the maximum
response delay for MLD
general query messages.
mld max-response-time
interval
10 seconds by default.
8.
Configure the MLD last
listener query interval.
mld last-listener-query-interval
interval
1 second by default.
9.
Configure the MLD other
querier present interval.
mld timer other-querier-present
interval
By default, the other querier
present interval is determined by
the formula "Other querier present
interval (in seconds) = [ MLD
query interval ] × [ MLD querier's
robustness variable ] + [ maximum
response delay for MLD general
query ] / 2."
Enabling MLD fast-leave processing
In some applications, such as ADSL dial-up networking, only one multicast receiver host is attached
to a port of the MLD querier. To allow fast response to the MLD done messages of the host when it
switches frequently from one IPv6 multicast group to another, you can enable MLD fast-leave
processing on the MLD querier.
With this feature enabled, after receiving an MLD done message, the MLD querier does not send
MLD multicast-address-specific queries. Instead, it directly sends a leave notification to the
upstream. In this way, the leave latency is reduced on one hand, and the network bandwidth is saved
on the other hand.
Enabling MLD fast-leave processing globally
Step
Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter public network MLD
view or VPN instance MLD
view.
mld
[
vpn-instance
vpn-instance-name
]
N/A
3.
Enable MLD fast-leave
processing.
fast-leave
[
group-policy
acl6-number
]
Disabled by default.
Enabling MLD fast-leave processing on an interface
Step
Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter interface view.
interface
interface-type
interface-number
N/A
3.
Enable MLD fast-leave
processing.
mld fast-leave
[
group-policy
acl6-number
]
Disabled by default.