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 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
Version 7.6.1.0 Introduced on the S-Series.
Version 7.5.1.0 Introduced on the C-Series.
E-Series legacy
command.
Usage
Information
Queriers normally send a certain number of 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.
C-Series, E-Series, S-Series, Z-Series, S4810
Syntax
ip igmp snooping flood
Defaults Enabled.
Command Modes CONFIGURATION
Command History
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
Version 8.2.1.0 Introduced on the C-Seris and S-Series.
Version 7.7.1.0 Introduced on the E-Series.
E-Series legacy
command
Usage
Information
On the E-Series, when you enable flooding (the default), unregistered multicast data traffic
floods to all ports in a VLAN. When you disable flooding, unregistered multicast data traffic
forwardeds 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 drops.
On the C-Series and S-Series, unregistered multicast data traffic drops when you disable
flooding; they do not forward the packets to multicast router ports. On the C-Series and S-
682
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