Cisco, Network Switches

Cisco Catalyst 3850 switch Factory Reset

how to factory reset a cisco catalyst 3850 switches

How to factory reset Cisco Catalyst 3850 switch and remove its Username and Password ?


To perform a factory reset on a Cisco Catalyst 3850 switch, you can follow these steps:

  • Connect to the switch: Use a console cable to connect your computer to the console port of the Cisco 3850 switch. You can use a terminal emulation program such as PuTTY or Secure CRT to establish a console session.
  • Power cycle the switch: Power off the switch by disconnecting the power cable.
  • Press and hold the Mode button: On the front panel of the switch, locate the Mode button. Press and hold the Mode button while powering on the switch. Continue to hold the button until the switch LED indicators begin to blink.
  • Release the Mode button: Once the LED indicators start blinking, release the Mode button. The switch will now begin the factory reset process.


Well, now we can enter our desired commands.

First, we must initialize the switch with the flash_init command.

Now enter the command ” SWITCH_IGNORE_STARTUP_CFG=1 and enter.
Type the BOOT command and enter.

Configure basic settings: Once the reset is complete, you can log in to the switch using the default username and password (usually “admin” for both). You will need to configure basic settings such as IP address, hostname, and administrative passwords.


>>Note: Performing a factory reset will erase all the configuration settings on the switch and restore it to its original out-of-the-box state. Make sure to back up any important configurations before proceeding with the reset.<<

2 thoughts on “Cisco Catalyst 3850 switch Factory Reset

  1. Alex says:

    It was a useful article

    1. Sahar Kazemi says:


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