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

Table Of Contents
570
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:
Ste
p
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:
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 the IGMP querier's
robustness variable.
igmp robust-count robust-value 2 by default.