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Configuring Advanced Features
Multimedia Traffic Control with IP Multicast (IGMP)
Configuring Advanced
Features
SMC TigerSwitch 10/100(vlan 1)# no ip igmp high-priority-
forward
Returns IGMP traffic to “normal” priority.
SMC TigerSwitch 10/100> show ip igmp config
Show command to display results of above high-priority commands.
Configuring the Querier Function. The default querier function is
“enabled”. This command disables or re-enables the querier function.
Syntax: [no] vlan <vid> ip igmp querier
Default: Yes
SMC TigerSwitch 10/100(config)# no vlan 1 ip igmp querier
Disables the querier function on VLAN 1.
SMC TigerSwitch 10/1002> show ip igmp config
Show command to display results of above querier command.
Web: Enabling or Disabling IGMP
In the web browser interface you can enable or disable IGMP on a per-VLAN
basis. To configure other IGMP features, telnet to the switch console and use
the CLI.
To Enable or Disable IGMP
1. Click on the Configuration tab.
2. Click on [Device Features].
3. If more than one VLAN is configured, use the VLAN pull-down menu to
select the VLAN on which you want to enable or disable IGMP.
4. Use the Multicast Filtering (IGMP) menu to enable or disable IGMP.
5. Click on [Apply Changes] to implement the configuration change.
How IGMP Operates
The Internet Group Management Protocol (IGMP) is an internal protocol of
the Internet Protocol (IP) suite. IP manages multicast traffic by using
switches, multicast routers, and hosts that support IGMP. (In Hewlett-Pack-
ard’s implementation of IGMP, a multicast router is not necessary as long as
a switch is configured to support IGMP with the
querier feature enabled.) A set
of hosts, routers, and/or switches that send or receive multicast data streams