Switching Commands
110
ProSAFE M7100 Managed Switches
The following CLI output is an example of the command output.
(switch) #show dhcp client vendor-id-option
DHCP Client Vendor Identifier Option ........... Enabled
DHCP Client Vendor Identifier Option string .... Client.
IGMP Snooping Configuration Commands
This section describes the commands you use to configure IGMP snooping. The software
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.
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 (L
AG), 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 fr
ame 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 disabled
Format set igmp
Mode • Global Config
• Interface Config
F
ormat set igmp <vlanid>
Mode VLAN Config
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