How to boot a NX 5k from bash to normal mode?

stefane01 · ‎08-07-2015

Hi guys (well maybe a few girls too),

I am facing following issue with my two NX 5k switches. I set them up and everything is running fine. This morning a power outage occured and when the power came back both N5k switches are booting in the bash-3.2 mode.

Searching for this on the web brought me to a cisco bug report which is suggesting to do a write erase command and reboot the switch (I tried rebooting without write erase several times, but it will still bott in the bash mode).

So understanding this workaround I have two questions.

1. Does anyone know if and how I can backup my config file out of the bash mode?

2. When I try the write erase command in the bash mode the linux is trying to write a tty message, so not what I expect from a write erase on the NXOS. How is the systax to make a write erase in the bash mode.

Thanks in advance for your help.

stefane01 · ‎08-14-2015

Still no answer? All Cisco workarrounds are not working yet.

jhager001 · ‎08-14-2015

http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/configuration/guide/cli/CLIConfigurationGuide/initconfig.html#pgfId-1074025

C"Clearing a Configuration

Use the write erase command to clear a startup configuration. Once this command is executed, the switch’s startup configuration reverts to factory defaults. The running configuration is not affected."

jhager001 · ‎08-14-2015

https://tools.cisco.com/quickview/bug/CSCub38011

Conditions:
Usually seen after a reboot/reload/power cycle or a software crash in a switch which has Fibre 
Channel(FC) license grace-period expired.

Maybe try to upgrade your IOS to a different version that this bug isn't known with.