Configuring mld fast-leave processing, Configuring mld fast-leave processing globally – H3C Technologies H3C S10500 Series Switches User Manual
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To do…
Use the command…
Remarks
Configure the MLD other querier
present interval
mld timer other-querier-present
interval
Required
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:
•
To avoid frequent MLD querier changes, set the other querier present interval greater than the MLD
query interval.
•
To avoid incorrect multicast group member removals, set the MLD query interval greater than the
maximum response delay for MLD general queries.
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
Follow these steps to configure MLD fast-leave processing globally:
To do…
Use the command…
Remarks
Enter system view
system-view
—
Enter MLD view
mld
—
Configure MLD fast-leave
processing
fast-leave [ group-policy
acl6-number ]
Required
Disabled by default.
Configuring MLD fast-leave processing on an interface
Follow these steps to configure MLD fast-leave processing on an interface:
To do…
Use the command…
Remarks
Enter system view
system-view
—
Enter interface view
interface interface-type
interface-number
—
Configure MLD fast-leave
processing
mld fast-leave [ group-policy
acl6-number ]
Required
Disabled by default.