Dell Force10 S4820T FTOS Command Reference Guide - Page 595

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 in which fast deletion of a group is required. When IGMP fast leave processing is enabled, the switch will remove an interface from the multicast group as soon as it detects an IGMP version 2 leave message on the interface. ip igmp snooping flood c e s This command controls the flooding behavior of unregistered multicast data packets. On the E-Series, when flooding is enabled (the default), unregistered multicast data traffic is flooded to all ports in a VLAN. When flooding is disabled, 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, then unregistered multicast data traffic is dropped. On the C-Series and S-Series, unregistered multicast data traffic is dropped when flooding is disabled; they do not forward the packets to multicast router ports. On the C-Series and S-Series, Layer 3 multicast must be disabled (no ip multicast-routing) in order to disable Layer 2 multicast flooding. Syntax Defaults ip igmp snooping flood Enabled Command Modes CONFIGURATION Command History Version 8.3.19.0 Version 8.3.7.0 Version 8.2.1.0 Version 7.7.1.1 Introduced on S4820T Introduced on S4810 Introduced on the C-Series and S-Series. Introduced on E-Series. ip igmp snooping last-member-query-interval c e s The last member query interval is the "maximum response time" inserted into Group-Specific queries sent in response to Group-Leave messages. This interval is also the interval between successive Group-Specific Query messages. Use this command to change the last member query interval. Syntax Parameters ip igmp snooping last-member-query-interval milliseconds To return to the default value, enter no ip igmp snooping last-member-query-interval. milliseconds Enter the interval in milliseconds. Default: 1000 milliseconds Range: 100 to 65535 Internet Group Management Protocol (IGMP) | 595