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To avoid incorrect multicast group member removals, set the MLD query interval greater than
the maximum response delay for MLD general queries.
Configuration procedure
To configure MLD query and response parameters globally:
Step
Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter public network MLD
view or VPN instance MLD
view.
mld
[
vpn-instance
vpn-instance-name
]
N/A
3.
Configure the MLD querier's
robustness variable.
robust-count
robust-value
2 by default.
A higher robustness variable
makes the MLD querier more
robust but results in a longer IPv6
multicast group timeout time.
4.
Configure the startup query
interval.
startup-query-interval
interval
By default, the startup query
interval is one-quarter of the "MLD
query interval."
5.
Configure the startup query
count.
startup-query-count
value
By default, the startup query count
is the same as the MLD querier's
robustness variable.
6.
Configure the MLD query
interval.
timer query
interval
125 seconds by default.
7.
Configure the maximum
response delay for MLD
general query messages.
max-response-time
interval
10 seconds by default.
8.
Configure the MLD last
listener query interval.
last-listener-query-interval
interval
1 second by default.
9.
Configure the MLD other
querier present interval.
timer other-querier-present
interval
By default, the other querier
present interval is determined by
the formula "Other querier present
interval (in seconds) = [ MLD
query interval ] × [ MLD querier's
robustness variable ] + [ maximum
response delay for MLD general
query ] / 2."
To configure MLD 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 MLD querier's
robustness variable.
mld robust-count
robust-value
2 by default.
A higher robustness variable
makes the MLD querier more
robust but results in a longer IPv6
multicast group timeout time.
4.
Configure the startup query
interval.
mld startup-query-interval
interval
By default, the startup query
interval is one-quarter of the "MLD
query interval."