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Command: ip igmp query-interval <time_val>
no ip igmp query-interval
Function: Set the interval for sending IGMP query messages; the “no ip IGMP query
interval” command restores the default setting.
Parameter: <time_val> is the interval for sending IGMP query packets, ranging from 1 to
65535s.
Default: The default interval for sending IGMP query messages is 125s.
Command mode: Interface Mode
Usage Guide: When a multicast protocol enables on a interface, IGMP query message
will be sent at regular interval from this interface. This command is also
used to configure the query period.
Example: Set the interval for sending IGMP query messages to 10s.
Switch (Config)#interface vlan 1
Switch(Config-If-Vlan1)#ip igmp query-interval 10
Command: ip igmp query-max-response-time <time_val>
no ip igmp query- max-response-time
Function: Set the maximum time for a interface to response to a IGMP query; the “no ip
igmp query-max-response-time” command restores the default setting.
Parameter: <time_val> is the maximum interface response time for IGMP queries,
ranging from 1 to 25s.
Default: The default value is 10 seconds.
Command mode: Interface Mode
Usage Guide: On receiving a query message from the switch, the host will set a counter
for each multicast group it belongs to, the counter value is random from 0 to
the maximum response time. When the value of any counter decreases to 0,
the host will send the member report message for the multicast group. Set
the maximum response time sensibly enable fast responds of host to query
messages, the router can also get the existing status of the multicast group
members.
Example: Set the maximum IGMP query response time to 20 seconds.
Switch (Config)#interface vlan 1
Switch(Config-If-Vlan1)#ip igmp query- max-response-time 20
Command: ip igmp query-timeout <time_val>
no ip igmp query-timeout
Function: Set the timeout interval for a interface to response to a IGMP query; the “no ip
igmp query-timeout” command restores the default setting.
Parameter: < time_val> is the time to timeout a IGMP query, the valid range is 60 to