3Com MSR 50 Series Configuration Manual page 1228

1228 C 73: MLD C
HAPTER ONFIGURATION
0, the host sends an MLD membership report message to the corresponding IPv6
multicast group.
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 burstiness
of MLD traffic on the network caused by reports simultaneously sent by a large
number of hosts when corresponding timers expire simultaneously.
For MLD general queries, you can configure the maximum response delay to fill
■
their Maximum Response Delay field.
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 message from the querier before the other querier present timer
expires, it will assume that the querier has failed and will initiate a new querier
election process. Otherwise, the non-querier will reset its timeout time.
Configuring MLD query and response parameters globally
Follow these steps to configure MLD query and response parameters globally:
To do...
Enter system view
Enter MLD view
Configure the MLD query
interval
Configure the MLD
robustness variable
Configure the maximum
response delay for MLD
general query messages
Configure the MLD last
listener query interval
Configure the MLD other
querier present interval
Configuring MLD query and response parameters on an interface
Follow these steps to configure MLD query and response parameters on an
interface:
To do...
Enter system view
Enter interface view
Configure the MLD query
interval
Use the command...
system-view
mld
timer query interval
robust-count robust-value
max-response-time interval
last-listener-query-interval
interval
timer other-querier-present
interval
Use the command...
system-view
interface interface-type
interface-number
mld timer query interval
Remarks
-
-
Optional
125 seconds by default.
Optional
2 times by default
Optional
10 seconds by default
Optional
1 second by default
Optional
For the default, see "Note"
below.
Remarks
-
-
Optional
125 seconds by default.