Using VLANs, Spanning Tree, and Hunt Groups (Layer 2 and Layer 3)

6.Use the corresponding pull-down menus to assign a Lucent VLAN ID association to each of the 16 available 3Com VLAN IDs.

7.In the Name column, click on VLAN.

8.Click APPLY to save your changes, or CANCEL to restore previous settings.

Note: The mapping instructions in the table called Default are fixed and cannot be changed. To actually map VLAN IDs, you must create new 3Com Mapping tables. Setting a port to use a 3Com mapping table causes it to ignore other VLAN tagging parameters. The switch assumes that only 3Com VLAN tags will be received on the selected port.

Assigning Ports To VLANs

Refer to “Configuring Switch Port Parameters,” in Chapter 3 for instructions on assigning ports to VLANs.

Using Spanning Tree Setup and Monitoring

Spanning trees are used to prevent loops from forming in your network. The spanning tree algorithm creates a single path through the network by ensuring that if more than one path exists between two parts of a network, only one of these paths is used, while the others are blocked.

Note: You should have a good understanding of spanning tree protocol before attempting to configure these parameters. Because of the number of “bridges” present in a switched networking environment, spanning tree structures can become extremely complex.

This section includes:

❒Spanning Tree Bridge Options

❒Managing Spanning Trees

❒Configuring Spanning Tree Bridge Ports

❒Disabling Spanning Tree Mode for the Port

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Cajun P550/P220 Switch Operation Guide