Configuring VLANs 195

„To add a port or port group to the VLAN and retain previous VLAN membership, click Add.

An added or moved port or port group now appears in the Current Members list.

4To specify a tag value for a port or port group:

aSelect the Tag checkbox for the port or port group.

By default, the checkbox is not selected. To remove a tag for a port or port group, clear the checkbox.

bDouble-click the Tag Value column for the port or port group.

cChange the tag value.

If you specify a tag value, 3Com recommends that you use the same value as the VLAN number. 3Com WX switches do not require the VLAN number and tag value to be the same, but some other devices do.

5To add more ports or port groups to the VLAN, repeat step 2 through step 4.

6To remove a port or port group from the VLAN, select a port or port group and click Remove. To make multiple selections, press Shift (for contiguous items) or Control (for noncontiguous items) while clicking items.

7Do one of the following:

„To configure Spanning Tree Protocol (STP), click Next to display the Spanning Tree page. (See “Configuring Spanning Tree Protocol” on page 195.)

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

Configuring Spanning Tree Protocol

The purpose of the Spanning Tree Protocol (STP) is to maintain a loop-free network. A loop-free path is accomplished when a device recognizes a loop in the topology and blocks one or more redundant paths.

Mobility System Software (MSS) supports 802.1D and Per-VLAN Spanning Tree protocol (PVST+).

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HP Manager Software manual Configuring Spanning Tree Protocol