Dell Force10 S25-01-GE-24T FTOS 8.4.2.7 Configuration Guide for E-Series TeraS - Page 611

Display the MLD Group Table Task Command Syntax Display MLD groups. Group information can be filtered, see the FTOS Command Line Reference for the options available with this command. show ipv6 mld {groups | interface} Command Mode EXEC Privilege Clear MLD Groups Clear a specific group or all groups on an interface from the multicast routing table using the command clear ipv6 mld groups from EXEC Privilege mode. Change the MLD Version Task Change the MLD version. Command Syntax ipv6 mld version 1 Default: MLD version 2 Command Mode INTERFACE Debug MLD Task Display FTOS messages about the MLD process. Command Syntax debug ipv6 mld Command Mode EXEC Privilege MLD Snooping Multicast packets are addressed with multicast MAC addresses, which represent a group of devices, rather than one unique device. Switches forward multicast frames out of all ports in a VLAN by default, even though there may be only some interested hosts, which is a waste of bandwidth. MLD Snooping enables switches to use information in MLD packets to generate a forwarding table that associates ports with multicast groups so that when they receive multicast frames, they can forward them only to interested receivers. Multicast Listener Discovery | 611