3Com 3CRWX120695A Reference Manual page 201

Wireless lan mobility system wireless lan switch manager

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10 Do one of the following:

To configure Internet Group Management Protocol (IGMP)

information, click Next to display the VLAN IGMP page. (See

"Configuring IGMP".)

To close the wizard and save the changes, click Finish.

Configuring IGMP

Internet Group Management Protocol (IGMP) snooping controls multicast

traffic on a WX by forwarding packets for a multicast group only on the

ports that are connected to members of the group. IGMP is especially

useful for WLANs because bandwidth is relatively constrained. The WX

listens for multicast packets and maintains a table of multicast groups, as

well as their sources and receivers, based on the traffic. IGMP snooping is

enabled by default.

You can configure IGMP snooping parameters and enable or disable the

feature on an individual VLAN basis.

The current software version supports IGMP versions 1 and 2.

Configuring VLANs

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