Netgear FSM726v3 7200 managed switch v8.x CLI reference manual - Page 183

Managed Switch CLI Manual, Release 8.0 Format Mode Term Interface VLAN ID show igmpsnooping mrouter vlan Privileged EXEC Definition The port on which multicast router information is being displayed. The list of VLANs of which the interface is a member. show mac-address-table igmpsnooping This command displays the IGMP Snooping entries in the MFDB table. Format Mode show mac-address-table igmpsnooping Privileged EXEC Term MAC Address Type Description Interfaces Definition A multicast MAC address for which the switch has forwarding or filtering information. The format is two-digit hexadecimal numbers that are separated by colons, for example 01:23:45:67:89:AB. In an IVL system the MAC address is displayed as a MAC address and VLAN ID combination of 8 bytes. The type of the entry, which is either static (added by the user) or dynamic (added to the table as a result of a learning process or protocol). The text description of this multicast table entry. The list of interfaces that are designated for forwarding (Fwd:) and filtering (Flt:). IGMP Snooping Querier Commands IGMP Snooping requires that one central switch or router periodically query all end-devices on the network to announce their multicast memberships. This central device is the "IGMP Querier". The IGMP query responses, known as IGMP reports, keep the switch updated with the current multicast group membership on a port-by-port basis. If the switch does not receive updated membership information in a timely fashion, it will stop forwarding multicasts to the port where the end device is located. Switching Commands v1.0, July 2009 3-147