Introduction
This document describes how to do factory reset and password recovery for Cisco 2520 Series Connected Grid Switches (CGS2520).
Contributed by Mehar Swarup and Sumedha Phatak, Cisco TAC Engineers.
Problem
This procedure is applicable when password is lost on switch or customer want to factory reset switch.
Solution
Follow these steps to factory reset configuration on CGS2520:
1. Unplug and plug the power cord from the switch.
2. Wait for the flash initializing message to appear as shown:
...done Initializing Flash.
The system has been interrupted, or encountered an error during initialization of the file system. These commands will initialize the flash filesystem, and finish loading the operating system software:
flash_init
boot
3. Press the express setup pin on the switch when flash initializing for 3-5 seconds. You will now see the 'switch:' prompt.
switch:
4. Use these commands to backup the configuration that already exists.
switch: flash_init
switch: dir flash:
switch: rename flash:config.text flash:config-backup.text
switch: rename flash:vlan.dat flash:vlan-backup.dat
5. Use these commands to delete the configuration that already exists.
switch: del flash:config.text
switch: del flash:vlan.dat
boot
- After you issue boot, the switch will now load into default mode and prompt for initial configuration.
- If you wish to skip the initial configuration to do it at a later time press ctrl+c on your PC.
If you only want to recover the password, use the boot option instead of the flash_init option as shown:
- boot flash:<system image>
- copy config.bak running-config
Change password here
- copy running-config startup-config
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