Modify VLAN Assignment Window

This window appears when you select a port and click Modify on the Assign VLANs tab of the VLAN window. Use it to:

Follow these steps:

  1. Select a mode from the Mode list.
    This table shows the mode choices, the devices that support each mode, and the meaning of each mode.
    Mode Supporting Devices Meaning
    Static Access 2900 XL, 2950, 3500 XL, 3550 The selected ports belong to only one VLAN.
    Dynamic Access 2900 XL, 2950, 3500 XL, 3550 The selected ports belong to only one VLAN and are dynamically assigned by a VMPS. The VMPS can be a Catalyst 5000 or Catalyst 6000 series switch, for example, but not a Catalyst 3550 switch.
    Multi-VLAN 2900 XL, 3500 XL The selected ports can belong to more than one VLAN. These ports should be connected to routers or servers. If they are connected to a router, traffic is forwarded within the boundaries of the VLANs, and the VLANs communicate through the router.
    Trunk Desirable 2950, 3550 The selected ports become trunk ports if the neighboring interface is set to Trunk Desirable or Trunk Auto.
    Trunk Auto 2950, 3550 The selected ports become trunk ports if the neighboring interface is set to Trunk Desirable.
    ISL Trunk 2900 XL, 2950, 3500 XL, 3550 The selected ports become trunk ports with ISL encapsulation.
    ISL Trunk - Nonnegotiate 3550 The selected ports become a trunk port with ISL encapsulation if the neighboring interface is set to ISL Trunk or ISL Trunk - Nonnegotiate. DTP negotiation is turned off.
    802.1Q Trunk 2900 XL, 2950, 3500 XL, 3550 The selected ports become trunk ports with 802.1Q encapsulation.
    802.1Q Trunk - Nonnegotiate 2950, 3550 The selected ports become a trunk port with 802.1Q encapsulation if the neighboring interface is set to 802.1Q Trunk or 802.1Q Trunk - Nonnegotiate. DTP negotiation is turned off.
    ATM Trunk 2900 XL with an ATM module The selected ATM port becomes an ATM trunk port.

  2. Note: You can use the Configure VLANs tab of the VLAN window to highlight the VLAN mode on the Front Panel view. Although six trunk modes are available on the Mode list, the Front Panel view shows only three: ISL Trunk, 802.1Q Trunk, and Negotiate Trunk. All the VLAN trunk modes on Catalyst 2950 switches are shown as 802.1Q Trunk. For other switches, the two 802.1Q trunk modes are shown as 802.1Q Trunk, and the two ISL trunk modes are shown as ISL Trunk. The Trunk Desirable and Trunk Auto modes are shown as Negotiate Trunk.
  3. In the VLAN ID field, enter the ID of the VLAN that you are reassigning the ports to.
  4. Click OK.
    Your choices will appear on the Assign VLANs tab of the VLAN window.