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Page 183
Chapter 7: Command-Line Management
fixed Specify the multicast groups currently registered on the switch are applied to the port, but any subsequent registrations or
deregistrations do not affect the port. Any registered multicast groups on the port are not deregistered based on the GARP
timers.
forbidden Specify that all GVRP multicasts are deregistered, and prevent any further GVRP multicast registration on the port.
IF_NAME The name of the interface.
4. Example:
The following example sets GVRP registration to fixed registration mode on the interface fe1 (port 1):
switch_a(config)#set gvrp registration fixed fe1
switch_a(config)#
IGMP Snooping
IGMP mode:
Querier:
1. Command Mode: Configure mode
Logon to Configure Mode (Configure Terminal Mode).
The switch_a(config)# prompt will show on the screen.
switch_a(config)#
2. Usage:
Use ip igmp snooping querier command to enable IGMP querier operation on a subnet (VLAN) when no multicast routing proto-
col is configured in the subnet (VLAN). When enabled, the IGMP Snooping querier sends out periodic IGMP queries for all inter-
faces on that VLAN.
Use the no ip igmp snooping querier command to disable IGMP querier configuration.
3. Command Syntax:
(no) ip igmp snooping querier
4. Example:
The following example enables IGMP snooping querier:
switch_a(config)# ip igmp snooping querier
switch_a(config)#
IGMP mode:
Passive:
1. Command Mode: Configure mode
Logon to Configure Mode (Configure Terminal Mode).
The switch_a(config)# prompt will show on the screen.
switch_a(config)#
2. Usage:
Use ip igmp snooping command to enable IGMP Snooping. This command is given in the Global Config mode. IGMP Snooping is
enabled at the switch level.