H3C Technologies H3C SecPath F1000-E - Manual (Page 614)

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• For IGMP general queries, you can configure the maximum response time to fill their Max Response
time field.
• For IGMP group-specific queries and IGMP group-and-source-specific queries, you can configure
the IGMP last-member query interval to fill their Max Response time field. Namely, for IGMP
group-specific queries and IGMP group-and-source-specific queries, the maximum response time
equals to the IGMP last-member query interval.
When multiple multicast routers exist on the same subnet, the IGMP querier is responsible for sending
IGMP queries. If a non-querier router receives no IGMP query from the querier within the "other querier
present interval", it will assume the querier to have expired and a new querier election process is
launched. Otherwise, the non-querier router will reset its "other querier present timer".
To configure IGMP query and response parameters globally:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter public network IGMP view. igmp N/A
3. Configure the IGMP querier’s
robustness variable.
robust-count robust-value 2 by default.
4. Configure the startup query
interval.
startup-query-interval interval
By default, the startup query
interval is 1/4 of the "IGMP
general query interval."
5. Configure the startup query count. startup-query-count value
By default, the startup query
count is set to the IGMP
querier’s robustness variable.
6. Configure the IGMP general
query interval.
timer query interval 60 seconds by default.
7. Configure the maximum response
time for IGMP general queries.
max-response-time interval 10 seconds by default.
8. Configure the IGMP last-member
query interval. last-member-query-interval
interval
1 second by default.
9. Configure the other querier
present interval.
timer other-querier-present
interval
By default, the other querier
present interval is [ IGMP
general query interval ] ×
[ IGMP robustness variable ] +
[ maximum response time for
IGMP general queries ] / 2.
To configure IGMP query and response parameters 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. Configure the IGMP querier’s
robustness variable.
igmp robust-count robust-value 2 by default.
4. Configure the startup query
interval.
igmp startup-query-interval
interval
By default, the startup query
interval is 1/4 of the "IGMP
general query interval."