Netgear XSM4324FS CLI Manual Software Version 12.x - Page 562
IGMP Snooping Configuration Commands
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M4300 Intelligent Edge Series Fully Managed Stackable Switches IGMP Snooping Configuration Commands This section describes the commands you use to configure IGMP snooping. The switch supports IGMP Versions 1, 2, and 3. The IGMP snooping feature can help conserve bandwidth because it allows the switch to forward IP multicast traffic only to connected hosts that request multicast traffic. IGMPv3 adds source filtering capabilities to IGMP versions 1 and 2. Note: This note clarifies the prioritization of MGMD Snooping Configurations. Many of the IGMP/MLD Snooping commands are available both in the Interface and VLAN modes. Operationally the system chooses or prefers the VLAN configured values over the Interface configured values for most configurations when the interface participates in the VLAN. set igmp This command enables IGMP Snooping on the system (Global Config Mode), an interface, or a range of interfaces. This command also enables IGMP snooping on a particular VLAN (VLAN Config Mode) and can enable IGMP snooping on all interfaces participating in a VLAN. If an interface has IGMP Snooping enabled and you enable this interface for routing or enlist it as a member of a port-channel (LAG), IGMP Snooping functionality is disabled on that interface. IGMP Snooping functionality is re-enabled if you disable routing or remove port-channel (LAG) membership from an interface that has IGMP Snooping enabled. The IGMP application supports the following activities: • Validation of the IP header checksum (as well as the IGMP header checksum) and discarding of the frame upon checksum error. • Maintenance of the forwarding table entries based on the MAC address versus the IP address. • Filters unknown IPv4 multicast packets on a VLAN if IGMP snooping is enabled, with the exception of group addresses in the range 224.0.0.x. These control packets are always flooded to all ports in the VLAN. Default Format Mode Enabled for VLAN 1; Disabled for other VLANs. set igmp [vlan-id] Global Config Interface Config VLAN Config Switching Commands 562 CLI Command Reference Manual