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How do I restart a network switch?

Published in Network Hardware 3 mins read

Restarting a network switch generally involves either a soft reboot or a hard reset, depending on the desired outcome. Here's how to perform both:

Soft Reboot (Power Cycle)

A soft reboot simply restarts the switch without erasing any configurations. This is the preferred method for most situations.

  1. Unplug the Power Cord: Disconnect the power cord from the back of the network switch.
  2. Wait: Allow the switch to remain without power for approximately 30 seconds to ensure complete discharge.
  3. Reconnect the Power Cord: Plug the power cord back into the switch.
  4. Wait for Startup: The switch will power back on. Allow it a few minutes to fully boot up and re-establish network connections. Watch the indicator lights to confirm normal operation.

Hard Reset (Factory Reset)

A hard reset will erase all configurations and restore the switch to its factory default settings. Use this method only if necessary, as it will require you to reconfigure the switch afterwards. Back up your configuration before performing a hard reset!

  1. Locate the Reset Button: Most switches have a small recessed reset button, usually on the front or back panel. You will likely need a paperclip or similar tool to press it.

  2. Disconnect Ethernet Cables (Optional but Recommended): Although not always necessary, disconnecting Ethernet cables can prevent potential conflicts during the reset process.

  3. Press and Hold the Reset Button: Using a paperclip or pin, press and hold the reset button.

  4. Apply Power (if necessary): Some switches require you to apply power while holding the reset button. Others will already be powered on. Consult your switch's manual.

  5. Hold for the Correct Duration: Continue holding the reset button for 15-30 seconds. The exact duration may vary by manufacturer; consult your switch's documentation. Often, the switch's indicator lights will blink or change in a specific pattern to indicate that the reset process has begun. A Cisco document suggests waiting until all port LEDs light up before releasing the reset button Cisco Reboot Instructions.

  6. Release the Reset Button: After holding the button for the required duration, release it.

  7. Wait for Reboot: The switch will now reboot with factory default settings. Allow several minutes for the process to complete.

  8. Reconnect and Reconfigure: Once the switch has fully rebooted, you'll need to reconnect your devices and reconfigure the switch according to your network requirements.

Important Considerations:

  • Consult your switch's manual: The specific steps and timings for resetting a network switch can vary depending on the manufacturer and model. Always refer to the documentation provided with your device.
  • Configuration Backup: Before performing a hard reset, if possible, back up your switch's current configuration. This will save you time and effort in reconfiguring the switch from scratch.
  • Direct Connection: After a hard reset, it's often necessary to connect your computer directly to the switch using an Ethernet cable to access its configuration interface (usually via a web browser).
  • IP Address: After a factory reset, the switch will likely have a default IP address. Consult the switch's manual to determine the default IP address and subnet mask, so you can configure your computer to communicate with the switch.

By following these steps, you can effectively restart your network switch, whether you need a simple reboot or a complete reset to factory settings.