HPE FlexNetwork 5510 HI Series Configuration Manual page 268

Configuration guidelines
When you configure the MLD query and response parameters, follow these restrictions and
guidelines:
• You can configure the MLD query and response parameters globally for all interfaces in MLD
view or for an interface in interface view. For an interface, the interface-specific configuration
takes priority over the global configuration.
• To avoid frequent MLD querier changes, set the MLD other querier present timer greater than
the MLD general query interval. In addition, configure the same MLD other querier present timer
for all MLD routers on the same subnet.
• To speed up the response to MLD queries and avoid simultaneous timer expirations that cause
MLD report traffic bursts, you must set an appropriate maximum response time.
For MLD general queries, the maximum response time is set by the max-response-time

command.
For MLD multicast-address-specific queries or MLD multicast-address-and-source-specific

queries, the maximum response time equals the MLD last listener query interval.
Configuring the MLD query and response parameters globally
Step
Enter system view.
1.
Enter MLD view.
2.
Set the MLD querier's
3.
robustness variable.
Set the MLD startup query
4.
interval.
Set the MLD startup query
5.
count.
Set the MLD general query
6.
interval.
Set the MLD last listener
7.
query interval.
Set the MLD last listener
8.
query count.
Set the maximum response
9.
time for MLD general
queries.
10. Set the MLD other querier
present timer.
Configuring the MLD query and response parameters on an interface
Step
Enter system view.
1.
Command
system-view
mld [ vpn-instance
vpn-instance-name ]
robust-count count
startup-query-interval interval
startup-query-count count
query-interval interval
last-listener-query-interval
interval
last-listener-query-count count
max-response-time time
other-querier-present-timeout
time
Command
system-view
258
Remarks
N/A
N/A
By default, the MLD querier's
robustness variable is 2.
By default, the MLD startup query
interval equals one quarter of the
MLD general query interval.
By default, the MLD startup query
count equals the MLD querier's
robustness variable.
By default, the MLD general query
interval is 125 seconds.
By default, the MLD last listener
query interval is 1 second.
By default, the MLD last listener
query count equals the MLD
querier's robustness variable.
By default, the maximum
response time for MLD general
queries is 10 seconds.
By default, the MLD other querier
present timer is calculated by
using the following formula:
[ MLD general query interval ] ×
[ MLD robustness variable ] +
[ maximum response time for MLD
general queries ] / 2.
Remarks
N/A