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Configuring Advanced Features
Multimedia Traffic Control with IP Multicast (IGMP)
Configuring Advanced
Features
Configuring Per-Port IGMP Packet Control. Use this command in the
VLAN context to specify how each port should handle IGMP traffic.
Syntax:
vlan <vid> ip igmp
[auto <port-list> | blocked <port-list> | forward <port-list>]
Default: auto
For example, suppose you wanted to configure IGMP as follows for VLAN 1
on the 10/100 ports on the SMC6624M:
Depending on the privilege level, you could use one of the following com-
mands to configure IGMP on VLAN 1 with the above settings:
SMC TigerSwitch 10/100
(config)# vlan 1 ip igmp auto 1-7
forward 8 blocked 9-12
SMC TigerSwitch 10/100(vlan-1)# ip igmp auto 1-7 forward 8
blocked 9-12
The following command displays the VLAN and per-port configuration result-
ing from the above commands.
SMC TigerSwitch 10/100> show ip igmp 1 config
Configuring IGMP Traffic Priority. This command assigns “high” priority
to IGMP traffic or returns a high-priority setting to “normal” priority.
Syntax: vlan <vid> ip igmp high-priority-forward
Default: normal
SMC TigerSwitch 10/100(config)# vlan 1 ip igmp high-
priority-forward
Configures high priority for IGMP traffic on VLAN 1.
SMC TigerSwitch 10/100(vlan-1)# vlan 1 ip igmp high-
priority-forward
Same as above command, but in the VLAN 1 context level.
Ports 1-7 auto Filter multicast traffic. Forward IGMP traffic to hosts on these ports
that belong to the multicast group for which the traffic is intended.
(Also forward any multicast traffic through any of these ports that is
connected to a multicast router.)
Port 8 forward Forward all multicast traffic through this port.
Ports 9-12 blocked Drop all multicast traffic received from devices on these ports, and
prevent any outgoing multicast traffic from moving through these
ports.