H3C LS-3100-52P-OVS-H3 Operation Manual - page 1124
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Proper setting of the maximum response delay of MLD query messages not only allows hosts to
respond to MLD query messages quickly, but also avoids bursts of MLD traffic on the network caused
by reports simultaneously sent by a large number of hosts when corresponding timers expire
simultaneously.
z
For MLD general queries, you can configure the maximum response delay to fill their Maximum
Response Delay field.
z
For MLD multicast-address-specific query messages, you can configure the last listener query
interval to fill their Maximum Response Delay field. That is to say, the maximum response time of
MLD general query messages equals the last listener query interval.
When multiple multicast routers exist on the same subnet, the MLD querier is responsible for sending
MLD query messages. If a non-querier router receives no MLD query from the querier within the “other
querier present interval”, it will assume that the querier has failed and a new querier election process is
launched. Otherwise, the non-querier will reset “other querier present timer”.
Configuring MLD query and response parameters globally
Follow these steps to configure MLD query and response parameters globally:
To do…
Use the command…
Remarks
Enter system view
system-view
—
Enter MLD view
mld
—
Configure the startup query
interval
startup-query-interval interval
Optional
For the system default, see
“Note” below.
Configure the startup query
count
startup-query-count value
Optional
For the system default, see
“Note” below.
Configure the MLD query
interval
timer query interval
Optional
125 seconds by default.
Configure the MLD querier
robustness variable
robust-count robust-value
Optional
2 times by default
Configure the maximum
response delay for MLD
general query messages
max-response-time interval
Optional
10 seconds by default
Configure the MLD last listener
query interval
last-listener-query-interval
interval
Optional
1 second by default
Configure the MLD other
querier present interval
timer other-querier-present
interval
Optional
For the system default, see
“Note” below.