# VLAN & Bridge

Device>Configure>VLAN & Bridge

Virtual LANs (VLANs) allow you to logically group resources independent of their physical location. This arrangement of resources, and the ports to which they are attached, is called a logical grouping. A logical group of ports is called a VLAN. Ports or groups of ports in a VLAN are called members. VLANs isolate all traffic, including broadcasts and multicasts, from being propagated to members of other VLANs. A Token Ring VLAN comprises Token Ring Bridge Relay Functions (TrBRFs) and Token Ring Concentrator Relay Functions (TrCRFs).

If the switches are interconnected by a port called an Inter-Switch Link (ISL), you can specify which VLANs are allowed to flow through the ISL.

You can use the VLAN & Bridge option to configure and view VLANs and their members.

The table on the left side of the dialog box displays the following information:

VLAN Name (vtpVlanName)

ASCII name associated with the VLAN; synonymous with the VLAN’s emulated LAN name on LAN emulation (LANE) trunks.

VLAN Type (vtpVlanType)

VLAN type. Possible values are Ethernet, Fiber Distributed Data Interface (FDDI), fddiNet, Token Ring Bridge Relay Function (TrBRF), and Token Ring Concentrator Relay Function (TrCRF).

VLAN State (vtpVlanState)

Current state of the VLAN. Possible values are Operational and Suspended. VLANs in Operational state are functional. VLANs in Suspended state do not pass packets.

Click OK to add a new VLAN, or click Cancel to close the dialog box without making any changes.