H3C Technologies H3C SecPath F1000-E - Manual (Page 929)

904
Step Command Remarks
4. Configure the startup query
interval.
mld startup-query-interval interval
By default, the startup query
interval is 1/4 of the "MLD query
interval."
5. Configure the startup query
count.
mld startup-query-count value
By default, the startup query count
is set to 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".
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.
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 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.
Enabling MLD fast-leave processing globally
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter MLD view. mld N/A