SMC Networks SMC6624M manual CLI Configuring and Displaying Igmp, How Igmp Operates on

Configuring Advanced Features

Configuring Advanced Features

Multimedia Traffic Control with IP Multicast (IGMP)

• Blocked: Causes the switch to drop all IGMP transmissions received from a specific port and to block all outgoing IP Multicast packets for that port. This has the effect of preventing IGMP traffic from moving through specific ports.

• Forward: Causes the switch to forward all IGMP and IP multicast transmissions through the port.

	■ Querier: In the default state (enabled), eliminates the need for a multicast
	router. In most cases, SMC recommends that you leave this parameter in
	the default “enabled” state even if you have a multicast router performing
	the querier function in your multicast group. For more information, see
	“How IGMP Operates” on page 9-94.
N o t e	Whenever IGMP is enabled, the switch generates an Event Log message
	indicating whether querier functionality is enabled.
	For more information, refer to “How IGMP Operates” on page 9-94.

CLI: Configuring and Displaying IGMP

IGMP Commands Used in This Section

show ip igmp configuration	page 9-91
ip igmp	page 9-92
high-priority-forward	page 9-93
auto <[ethernet] <port-list>	page 9-93
blocked <[ethernet] <port-list>	page 9-93
forward <[ethernet] <port-list>	page 9-93
querier	page 9-94
show ip igmp	See “IP Multicast (IGMP) Status” on page 10-16

9-90