Category Archives: Networking

How to Password Reset on Catalyst 3850

Here are the quick easy steps to recover your 3850 switch password.

1. ​Power cycle the switch, press and hold the Mode button. Hold the mode button for approx. 15-30 sec, the Status LED will go amber. On the console make sure you are in Boot Loader mode.

Switch: flash_init
Switch: SWITCH_IGNORE_STARTUP_CFG=1
Switch: boot

 

2. After switch boots up.

Switch# copy startup-config running-config
Switch# configure terminal
Switch(config)# no system ignore startupconfig switch all
Switch(config)# exit
Switch# write

How to Password Reset on Nexus 5K

Here i will show how to step by step recover a password on N 5k (ex. N5548).

1. Do a hard reboot by unplugging the power cable.
2. Careful watch the switch boot up and when it gets to “Loading system software” (see below) and send break command “Ctrl + ]”.

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How to recover a Cisco Switch from Boot Loader

Today I had to update a 3560x but when I consoled into the switch it was at Boot Loader prompt (switch:) and I wasn’t sure so I tried to boot and this is what happened.

switch: boot
Loading "flash:/c3560e-universalk9-mz.122-53.SE2/c3560e-universalk9-mz.122-53.SE2.bin"...flash:/c3560e-universalk9-mz.122-53.SE2/c3560e-universalk9-mz.122-53.SE2.bin: no such file or directory

Error loading "flash:/c3560e-universalk9-mz.122-53.SE2/c3560e-universalk9-mz.122-53.SE2.bin"

Interrupt within 5 seconds to abort boot process.
Boot process failed...

The system is unable to boot automatically.  The BOOT
environment variable needs to be set to a bootable
image.

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