Service Manual

To disable IGMP snooping fast leave, use the no igmp snooping fast-leave command.
Defaults Not configured.
Command Modes INTERFACE VLAN — (conf-if-vl-n)
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information Queriers normally send some queries when a leave message is received prior to deleting a group from the
membership database. There may be situations when you require a fast deletion of a group. When you enable
IGMP fast leave processing, the switch removes an interface from the multicast group as soon as it detects an
IGMP version 2 leave message on the interface.
ip igmp snooping flood
This command controls the flooding behavior of unregistered multicast data packets.
Syntax
ip igmp snooping flood
Defaults Enabled.
Command Modes CONFIGURATION
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information
When you disable flooding, unregistered multicast data traffic is forwarded to only multicast router ports, both
static and dynamic, in a VLAN. If there is no multicast router port in a VLAN, unregistered multicast data traffic is
dropped.
On the switch, when you configure no ip igmp snooping flood, the system forwards the frames on
mrouter ports for first 96 IGMP snooping enabled VLANs. For all other VLANs, unregistered multicast packets are
dropped.
ip igmp snooping last-member-query-interval
The last member query interval is the maximum response time inserted into Group-Specific queries sent in response to Group-Leave
messages.
Syntax
ip igmp snooping last-member-query-interval milliseconds
To return to the default value, use the no ip igmp snooping last-member-query-interval
command.
Parameters
milliseconds Enter the interval in milliseconds. The range is from 100 to 65535. The default is 1000
milliseconds.
498 Internet Group Management Protocol (IGMP)