Cisco Catalyst 3850 Password Recovery
“I’m trying to do password recovery on a Catalyst 3850 switch, and I can’t figure out what
I have to actually do.” For network users it is a common problem that you lost or forgot
the password of a network switch. How to recover password on a Cisco switch/Cisco
catalyst 3850? We will show you the following basic steps needed to recover the
password on catalyst 3850 series.
Power cycle the switch. Immediately press and hold the Mode button. Hold the button for
approximately 12 seconds, the Status LED will go amber. On the console you should be
in Boot Loader.
Add the following variables.
Then boot the switch.
Once the switch has booted you can copy the saved config back into the running config.
Switch# copy start runn
Next set your password(s). Finally we want to remove the variables we set while in Boot
Switch# no system ignore startupconfig switch all
Switch# system disable password recovery switch all
Save your new config.
Switch# copy runn start
Since we are on the topic of passwords, I beleive you should configure AAA even if
you’re using local credentials. Here’s an example of how easy it is to setup.
Switch(config)# aaa new-model
Switch(config)# aaa authentication login default local
Switch(config)# username mmessier privilege 15 secret StAnLeYcUp
Switch(config)# line vty 0 4
Switch(config-line)# login authentication default
It’s that easy! You can now remove the passwords from under the VTY. Those passwords
are easily reversible and should not be used. Instead use AAA and the secret keyword in
configuring the username. It SHA encrypts the password and is not reversible (yet).
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