Switching Commands
155
M4100 Series ProSAFE Managed Switches
set igmp
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
(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:
• V
alidation 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.
• Global Config
• Interface Config
no set igmp
This command disables IGMP Snooping on the system, an interface, or a VLAN.
• Global Config
• Interface Config
set igmp interfacemode
This command enables IGMP Snooping on all interfaces. 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.
Default disabled
Format set igmp
Mode
Format set igmp <vlanid>
Mode
VLAN Config
Format no set igmp
Mode
Format no set igmp <vlanid>
Mode VLAN Config
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