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TrueView Catalyst 1600 Manager enables you to configure virtual LANs that include one or more Catalyst 1600 devices, or view a list of the virtual LANs to which a Catalyst 1600 belongs. For information about virtual LANs, see Appendix B, "Controlling Broadcast Frames with Virtual LANs".
The Catalyst 1600 supports the configuration of up to 16 virtual LANs per device. Each virtual LAN may consist of up to 64 rings.
Catalyst 1600 Manager maintains a master record of the virtual LANs that you define in an RSVLAN.INI file in the same directory as the Catalyst 1600 Manager program files. RSVLAN.INI contains information about the Catalyst 1600 devices and rings that belong to each virtual LAN. Whenever you create or edit virtual LANs, the information is automatically downloaded to Catalyst 1600 devices.
Because the local record of virtual LANs must match the configuration that you have downloaded to each Catalyst 1600, Catalyst 1600 Manager always verifies that each Catalyst 1600 exists on the network, and that the password is correct, before downloading a new configuration to a series of Catalyst 1600 devices.
To create a new virtual LAN, you must be able to identify the Catalyst 1600 devices that will belong to the virtual LAN, the rings that will be included in the virtual LAN, and whether the virtual LAN will be impermeable or permeable (see Appendix B, "Controlling Broadcast Frames with Virtual LANs"). You can also include new ring numbers to provide for expansion of the virtual LAN.
To create a new virtual LAN:
Step 1 Click on the Table command on the Catalyst 1600 menu.
The Catalyst 1600 Manager Table dialog box is displayed.
Step 2 Click on the Catalyst 1600 devices that you want to include in the virtual LAN.
The table rows corresponding to the Catalyst 1600 devices are highlighted.
Step 3 Click on the New VLAN button.
The Edit Virtual LAN dialog box displays a list of included devices, and the rings you can add to the virtual LAN in a list of unused rings.
Step 4 Enter a name (1 through 16 characters) for the virtual LAN in the name field.
Step 5 To create a permeable virtual LAN, enable the Permeable check box.
Step 6 Click on the rings that you want to add, and click on the Add button.
The rings that you selected are removed from the list of unused rings and shown in the list of included rings.
Step 7 To add new rings that will be used in the future, click on the New Ring button and specify a three-digit hexadecimal number for the ring.
The new ring is shown in the list of included rings, with two exclamation marks to indicate that the ring is not found on the Catalyst 1600 devices that belong to the virtual LAN.
Step 8 Click on the OK button to create the virtual LAN.
When you create a virtual LAN, Catalyst 1600 Manager verifies that the appropriate passwords are correct before downloading the new configuration to the Catalyst 1600 devices in the virtual LAN. If passwords are required, you are prompted to enter the passwords before proceeding.
 | Caution Downloading the virtual LAN to an incomplete set of Catalyst 1600 devices results in inconsistent definitions of virtual LANs, and may result in undesirable forwarding or blocking of broadcast frames. |
You can edit and update the virtual LANs that have been configured on managed Catalyst 1600 devices.
When you edit the virtual LAN configuration, Catalyst 1600 Manager downloads information stored in the RSVLAN.INI file to each Catalyst 1600 device that belongs to the virtual LAN.
To edit virtual LANs:
Step 1 Click on the Table command on the Catalyst 1600 menu.
The Catalyst 1600 Manager Table dialog box is displayed.
Step 2 Click on the Edit VLANs button.
The All Virtual LANs dialog box displays a list of defined virtual LANs.
Step 3 Click on the name of the virtual LAN you want to edit.
The name of the virtual LAN is highlighted.
Step 4 Click on the Edit button.
The Edit Virtual LAN dialog box displays the Catalyst 1600 devices and rings that belong to the virtual LAN, and whether the type of virtual LAN is impermeable or permeable.
Step 5 Edit the configuration of the virtual LAN if required.
Step 6 Click on the OK button to update the virtual LAN configuration.
The new configuration is downloaded to all included Catalyst 1600 devices.
You can view a list of the virtual LANs that are configured on a particular Catalyst 1600, and view the configuration of the virtual LANs.
To view virtual LANs on a Catalyst 1600:
Step 1 Start Catalyst 1600 Manager.
The Catalyst 1600 dialog box is displayed.
Step 2 Click on the View Virtual LANs button.
The View Virtual LANs dialog box is displayed.
Step 3 Click on the name of the virtual LAN you want to view.
The name of the virtual LAN is highlighted.
Step 4 Click on the View button.
The View Virtual LAN dialog box displays the configuration of the virtual LAN. Any rings that are not connected directly to the Catalyst 1600 are indicated by two exclamation marks.
You can delete virtual LANs from each Catalyst 1600 that belongs to the virtual LAN.
To delete virtual LANs:
Step 1 Click on the Table command on the Catalyst 1600 menu.
The Catalyst 1600 Manager Table dialog box is displayed.
Step 2 Click on the Edit V.LANs button.
The All Virtual LANs dialog box displays a list of defined virtual LANs.
Step 3 Click on the name of the virtual LAN you want to edit.
The name of the virtual LAN is highlighted.
Step 4 Click on the Delete button.
The virtual LAN is deleted.
If you experience problems with the current configuration and want to create new virtual LANs, you can delete the virtual LANs from an individual Catalyst 1600.
 | Warning Deleting virtual LANs from individual Catalyst 1600 devices results in inconsistent definitions of virtual LANs, and may result in undesirable forwarding or blocking of broadcast frames. |
To delete virtual LANs from a device:
Step 1 Start Catalyst 1600 Manager.
The Catalyst 1600 dialog box is displayed.
Step 2 Click on the View Virtual LANs button.
The View Virtual LANs dialog box is displayed.
Step 3 Click on the name of the virtual LAN you want to delete.
The name of the virtual LAN is highlighted.
Step 4 Click on the Delete button.
A warning is displayed, asking you to confirm the operation.
Step 5 Click on the OK button to delete the virtual LAN.
If the password for the device is correct, the virtual LAN is deleted from the selected Catalyst 1600.
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