User's Manual

320
no ip igmp-snooping
querier
querier-timer
Recovers IGMP snooping
’
s Querier Time
as default
By default IGMP snooping querier is shut down. The default time interval of Query messages is 200 seconds.
Note:
If Querier function is initiated, querier-timer should not be set as too long. In subnet if there are other
switches with querier initiated, long querier-timer (longer than other switch’s router-age) would lead to the
instablization of querier selection in subnet.
42.1.11 Configuring Filter of IGMP Snooping
The command is used to enable IGMP snooping filter. The switch only enables the configured multicast group
in the filter to add group.
Configure the following in the port configuration mode:
Command Purpose
[no] ip igmp-snooping filter
[address [ip_addr]
Configures filter of IGMP snooping; the optional parameter:
address is the multicast group address.
By default the function “IGMP snooping filter” is disabled. All multicast addresses can add groups.
Note:
Only an arbitrary address that is configured can its filter function takes effect. Delete all addresses and the
filter function is disabled.
42.1.12 Configuring Clear-group of IGMP Snooping
The command is used to delete all multicast groups recorded by igmp-snooping in the switch.
Configure as following under global configuration mode:
Command Purpose
ip igmp-
snooping
clear-group
Delete all multicast groups manually
Note:
The command is used to delete all multicast groups in non-service condition.
42.1.13 Configuring quick-query of IGMP-snooping
If enable quick of IGMP-snooping, there is port up, send igmp query packets to the port directly.
Configure as following under global configuration mode:
Command Purpose
[no] ip igmp-snooping quick-query Enables the command and if there is port up,
send igmp query packets to port up.