Igmp Snooping Commands; Igmp Snooping Configuration Commands; Ip Igmpsnooping; Section 15.1 "Igmp Snooping Configuration Commands - NETGEAR GSM7248R Command Line Interface Reference Manual

Command Line Interface Reference for the ProSafe 7200RS Series Layer-2 Stackable Switches

15.1 IGMP Snooping Configuration Commands

This section describes the commands you use to configure IGMP snooping.

15.1.1 ip igmpsnooping

This command enables IGMP Snooping on the system (Global Config Mode) or an
interface (Interface Config Mode). This command also enables IGMP snooping on a
particular VLAN 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.
• Flooding of unregistered multicast data packets to all ports in the VLAN.
Default
Format
Modes
15.1.1.1 no ip igmpsnooping
This command disables IGMP Snooping on the system.
Format
Modes
15-2
disabled
ip igmpsnooping <vlanId>
Global Config
Interface Config
VLAN Mode
no ip igmpsnooping <vlanId>
Global Config
Interface Config
VLAN Mode
v1.0, October 2008

IGMP Snooping Commands