R3721-F3210-F3171-HP High-End Firewalls Network Management Configuration Guide-6PW101

Table Of Contents
882
Ste
p
Command Remarks
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".
CAUTION:
Make sure that the other querier present interval is greater than the MLD query interval. Otherwise the
MLD querier might frequently change.
Make sure that the MLD query interval is greater than the maximum response delay for MLD general
queries. Otherwise, multicast group members might be wrongly removed.
Configuring 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 fast-leave processing enabled, after receiving an MLD done message from a host, the MLD querier
sends a leave notification to the upstream immediately without first sending MLD
multicast-address-specific queries. In this way, the leave latency is reduced on one hand, and the network
bandwidth is saved on the other hand.
Configuring MLD fast-leave processing globally
Ste
p
Command Remarks
1. Enter system view. system-view N/A
2. Enter MLD view.
mld N/A
3. Configure MLD fast-leave
processing.
fast-leave [ group-policy
acl6-number ]
Disabled by default
Configuring MLD fast-leave processing on an interface
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Configure MLD fast-leave
processing.
mld fast-leave [ group-policy
acl6-number ]
Disabled by default