Friday, January 20, 2012

Password Recovery on a Catalyst 3750-E

Password recovery on a Catalyst 3750-E

  • Press and hold the Mode button on the front of the system then connect the power
  • Continue holding until the SYS LED blinks from green, to amber, to green, then turns solid green.
  • Release Mode and you should have a prompt for – switch:
  • Do – switch: flash_init
  • Next do – switch: dir flash:
  • Next do - switch:  rename flash:config.text flash:config.old
  • Next do – switch: boot
  • Once the system reboots you can either save the blank config and work from a clean install                   #wr mem
  • Or, recover the old config and reset the password:   
                       #rename flash:config.old flash:config.text
  • Then do - #copy flash:config.text system:running-config
  • Change all the passwords and apply an appropriate user account:
          (config)#enable secret [password]
          (config)#username Trevor password [password]
          (config)#line con 0
                        password [password]
          (config)#line vty 0 4
                       password [password]
  • Finally save the config and reload -
                     #wr mem

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