User Manual UMN:CLI
V5808
419
show ip igmp snooping [vlan
VLANS] querier [detail]
Shows IGMP querier information and configured
parameters.
9.2.3.2 IGMP Snooping Last Member Query Interval
Upon receiving a leave message, a switch with IGMP snooping then sends out a group-
specific (IGMPv2) or group-source-specific query (IGMPv3) message to determine if
there is still any host interested in receiving the traffic. If there is no reply, the switch stops
forwarding the multicast traffic. However, IGMP messages may get lost for various
reasons, so you can specify an interval to send query messages.
To specify an interval to send group-specific or group-source-specific query messages,
use the following command.
ip igmp snooping last-member-
query-interval <100-10000>
Specifies a last member query interval.
100-10000: last member query interval
(default: 1000 milliseconds)
ip igmp snooping vlan VLANS
last-member-query-interval
<100-10000>
Specifies a last member query interval.
VLANS: VLAN ID (1-4094)
To delete a specified an interval to send group-specific or group-source-specific query
messages, use the following command.
no ip igmp snooping last-
member-query-interval
Deletes a specified last member query interval.
no ip igmp snooping vlan
VLANS last-member-query-
interval
9.2.3.3 IGMP Snooping Immediate Leave
Normally, an IGMP snooping querier sends a group-specific or group-source-specific
query message upon receipt of a leave message from a host. If you want to set a leave
latency as 0 (zero), you can omit the querying procedure. When the querying procedure
is omitted, the switch immediately removes the entry from the forwarding table for that
VLAN, and informs the multicast router.
To enable the IGMP snooping immediate leave, use the following command.
ip igmp snooping immediate-
leave
Enables the IGMP snooping immediate leave globally.
ip igmp snooping port PORTS
Enables the IGMP snooping immediate leave on a port.
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