C
HAPTER
17
| IGMP Commands
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igmp mode This command displays or sets the IGMP snooping mode for the switch.
SYNTAX
igmp mode [enable | disable]
enable - Enables IGMP snooping globally for the switch. When
IGMP snooping is enabled, the switch will monitor network traffic to
determine which hosts want to receive multicast traffic.
disable - Disables IGMP snooping globally for the switch.
DEFAULT SETTING
Enabled
COMMAND USAGE
This switch can passively snoop on IGMP Query and Report packets
transferred between IP multicast routers/switches and IP multicast host
groups to identify the IP multicast group members. It simply monitors the
IGMP packets passing through it, picks out the group registration
information, and configures the multicast filters accordingly.
EXAMPLE
IGMP>mode enable
IGMP>
igmp state This command displays or sets the IGMP snooping state for the specified
VLAN.
SYNTAX
igmp state [vlan-id] [enable | disable]
vlan-id - VLAN to which the management address is assigned.
(Range: 1-4095)
enable - Enables IGMP snooping. When enabled, the switch will
monitor network traffic on the indicated VLAN interface to
determine which hosts want to receive multicast traffic.
disable - Disables IGMP snooping.
DEFAULT SETTING
Enabled
COMMAND USAGE
When IGMP snooping is enabled globally, the per VLAN interface settings
for IGMP snooping take precedence. When IGMP snooping is disabled
globally, snooping can still be configured per VLAN interface, but the
interface settings will not take effect until snooping is re-enabled globally.