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# Configuring the Fortinet FortiGate Switch for Port Mirroring

This procedure explains how to configure Fortinet FortiGate switches for port mirroring on models with built-in hardware switches (for example, the FortiGate-100D, 140D, and 200D), using the Switch Port Analyzer (SPAN) feature.

## Configuration Through the CLI

**To configure SPAN through the CLI**

1. Enter the following:

   ```
   config system virtual-switch
   edit <port>
   set span enable
   set span-source-port <port>
   set span-dest-port <port>
   set span-direction {both | Tx | Rx}
   end
   end
   ```

## Configuration Through the Web UI

**To configure SPAN through the web UI**

1. Go to **System > Network > Interfaces**.
2. Edit a hardware switch interface.

   By default, the system may have a hardware switch interface called a LAN. You can also create a new hardware switch interface.

   a. Select the SPAN checkbox, then select a source port from which you want traffic mirrored.
   b. Select one of the following:

   * Traffic received
   * Traffic sent
   * Both

See [the Knowledge Base article](http://kb.fortinet.com/kb/documentLink.do?externalID=FD36798) on the vendor website to learn more about configuring port mirroring on Fortinet-FortiGate Switches.