Enabling Fast-Leave Processing - HP FlexNetwork 7500 Series Configuration Manual

Configuring the IGMP query and response parameters on an interface
Step
Enter system view.
1.
Enter interface view.
2.
Set the IGMP querier's
3.
robustness variable.
Set the IGMP startup query
4.
interval.
Set the IGMP startup query
5.
count.
Set the IGMP general query
6.
interval.
Set the IGMP last member
7.
query interval.
Set the IGMP last member
8.
query count.
Set the maximum response
9.
time for IGMP general
queries.
10. Set the IGMP other querier
present timer.

Enabling fast-leave processing

This feature enables an IGMP querier to send a leave notification directly to the upstream without
sending group-specific queries or group-and-source-specific queries after receiving a leave
message. This reduces leave latency and preserves the network bandwidth.
The fast-leave processing configuration takes effect only when the switch runs IGMPv2 or IGMPv3.
To enable fast-leave processing:
Step
Enter system view.
1.
Enter interface view.
2.
Enable fast-leave
3.
processing.
Command
system-view
interface interface-type
interface-number
igmp robust-count count
igmp startup-query-interval
interval
igmp startup-query-count count
igmp query-interval interval
igmp
last-member-query-interval
interval
igmp last-member-query-count
count
igmp max-response-time time
igmp
other-querier-present-interval
interval
Command
system-view
interface interface-type
interface-number
igmp fast-leave [ group-policy
acl-number ]
84
Remarks
N/A
N/A
By default, the IGMP querier's
robustness variable is 2.
By default, the IGMP startup
query interval equals one quarter
of the IGMP general query
interval.
By default, the IGMP startup
query count equals the IGMP
querier's robustness variable.
By default, the IGMP general
query interval is 125 seconds.
By default, the IGMP last member
query interval is 1 second.
By default, the IGMP last member
query count equals the IGMP
querier's robustness variable.
By default, the maximum
response time for IGMP general
queries is 10 seconds.
By default, the IGMP other querier
present timer is [ IGMP general
query interval ] × [ IGMP
robustness variable ] +
[ maximum response time for
IGMP general queries ] / 2.
Remarks
N/A
N/A
By default, fast-leave processing
is disabled.