# Configuring STP BPDU filtering for specific ports

Use this procedure to configure STP BPDU filtering for one or more ports.

You can configure STP BPDU filtering in either STG, RSTP, or MSTP operational mode.

STP BPDU-Filtering is not supported on MLT ports.

1. On the Device Physical View select a port, or use Ctrl-click to select more than one port.

2. Right-click the port or group of ports.

3. From the drop-down menu, click Edit.

4. On the work area, click the STP BPDU-Filtering tab.

5. If you selected a group of ports on the Device Physical View, perform the following actions for each port in the list:

   - To select a port to edit, click the cell in the rcPortIndex column.

   - In the port row, double-click the cell in the Admin Enabled column.

   - Click the arrow to reveal the list.

   - Select a value from the list—true to enable STP BPDU filtering for the port, or false to disable STP BPDU filtering for the port.

   - In the port row, double-click the cell in the Timeout column.

   - Type a value in the dialog box.

6. If you selected a single port on the Device Physical View:

   - Click the AdminEnabled checkbox.

   - Enter a value in the Timeout box.

7. On the toolbar, click Apply.

## Variable definitions

The following table outlines the parameters of the STP BPDU-Filtering tab.

Table 1. STP BPDU-Filtering tab parameters
Variable | Value
--- | ---
rcPortIndex | Indicates the switch and port number.
AdminEnabled | Enables and disables BPDU filtering on the port.
OperEnabled | Indicates the current operational status of BPDU filtering on the port: true (enabled) or false (disabled).
Timeout | When BPDU filtering is enabled, this parameter indicates the time, in 1/100 seconds, during which the port remains disabled after it receives a BPDU. The port timer is disabled if this value is set to 0. The default value is 12000 (120 seconds).
TimerCount | Displays the time remaining for the port to stay in the disabled state after receiving a BPDU.