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This chapter describes the configuration procedures for the VLAN & Bridge application.
To start the VLAN & Bridge application, select Configure>device>VLAN & Bridge.
The VLAN & Bridge application allows you to configure groups of ports, independent of their physical location. This arrangement of ports is called a logical grouping and the logical group of ports is called a VLAN. Ports or groups of ports in a VLAN are called VLAN members. VLANs prevent traffic, including broadcasts and multicasts, from being propagated to members of other VLANs.
Switches are interconnected by the Inter-Switch Link (ISL) port so VLAN traffic can cross multiple switches.
Most of the configuration required for bridging is related to the spanning-tree algorithm, which allows the connected network topology to contain multiple physical paths between two stations, but constrains the active topology to a single-span tree. If a port on one bridge fails, the other bridges can reconfigure the topology and switch traffic to new paths.
The main window for VLAN and bridging configuration is the VLAN & Bridge window (Figure 8-1). The VLAN & Bridge window contains information about the currently configured VLANs in the device.
Start the VLAN & Bridge application by selecting Configure>device>VLAN & Bridge.
The VLAN action buttons are divided as follows:
The VLAN Bridge Configuration window allows you to display and configure the bridging parameters for the selected TrVlan or TrNetVLAN (Figure 8-2).
The following action buttons may be available:
The Bridge Forwarding window (Figure 8-4) displays bridge forwarding information for a device.
The Bridging Statics window (Figure 8-5), and lists forwarding information that has been manually configured on the bridge, and contains action buttons:
The action buttons are as follows:
This section contains instructions for using the Bridges tools.
To configure the bridge, perform the following steps:
Step 1 Select the entry to be configured and click Configure. The VLAN Bridge Configuration window opens.
Step 2 Configure the bridge as appropriate.
Step 3 Click Modify to commit your input in the window and exit the window.
To configure a logical port of a TrNetVlan entry, perform the following steps:
Step 1 Select the TrNetVlan entry to be configured and click Configure. The TrNetVLAN Logical Ports Configuration window opens.
Step 2 Configure the port as appropriate.
Step 3 Click Modify to commit your input in the window and exit the window.
To display bridge forwarding information for the selected device from the VLAN & Bridge table, click Forwarding. A window opens containing the bridge forwarding information.
To display forwarding information on the bridge manually configured from the VLAN & Bridge table, click Static. A window opens containing the bridge forwarding information.
To create a static bridge, perform the following steps:
Step 1 Click Create from the Bridging Statics window. The Create Bridge window opens.
Step 2 Configure the port as appropriate.
Step 3 Click Apply to commit your input in the window and exit the window.
The Local Management Domain window (Figure 8-6) allows you to create a new management domain and define the boundary of a defined VLAN, or modify or display the existing domain information by displaying information about the local management domain in the device.
To create, modify, or display a management domain, perform the following steps:
Step 1 From the VLAN & Bridge, click Local Mgmt Domain. The Local Management Domain window opens.
Step 2 Enter values into the following fields:
Step 3 Click Apply to commit the input, refresh the VLAN & Bridge window, but not exit the window. If the device returns any errors during this operation, CiscoView reports that to you.
Step 4 Repeat Steps 1 through 3 for each domain as required.
Step 5 Click Cancel to exit the window.
The Create VLAN window (Figure 8-7) allows you to create a new VLAN or display the selected VLAN.
To create a VLAN, perform the following steps:
Step 1 From the VLAN & Bridge table, click Create VLAN. The Create VLAN window opens.
Step 2 Enter values into the following fields:
Step 3 Enter values into the following "optional" fields or leave the fields blank:
Step 4 From the VLAN & Bridge table, select the newly created VLAN and click Modify VLAN.
Step 5 Change the Preferred VLAN value to "yes" and click Apply.
Step 6 Use the Drag & Drop technique to assign the ports to the VLAN.
Step 7 Click Apply to commit the input, refresh the VLAN & Bridge table, but not exit the window. If the device returns any errors during this operation, CiscoView reports that to you.
Step 8 Repeat Steps 1 through 3 and Steps 6 and 7 for each new VLAN on the Catalyst 5000 series switch, and Steps 1 through 7 for each new VLAN on the Catalyst 3000 series switch.
Step 9 Click Cancel to exit the window.
To delete a VLAN, perform the following steps:
Step 1 From the VLAN & Bridge table, select a VLAN, and click Delete. A confirmation window opens.
Step 2 Click Apply to confirm the deletion of the VLAN, or Cancel to exit the window. If deleted, the VLAN is removed from the device VLAN table.
Step 3 Click Cancel to exit the window.
To modify a VLAN, select a VLAN from the VLAN table and click Modify VLAN. A dialog similar to the one shown for creating a VLAN opens (Figure 8-8).
To modify a VLAN, perform the following steps:
Step 1 From the VLAN & Bridge table, select a VLAN and click Modify VLAN. A window similar to the Create VLAN opens.
Step 2 Change the value(s) as appropriate and click Apply. If the device returns any errors during this operation, CiscoView reports that to you.
Step 3 Click Cancel to exit the window.
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