unknown cmd error on my 3560 E switch

srwiza1 · August 2017

I have an error on my 3560 E and all commands will either say unknown cmd and the only few commands which work are boot and flash init but the rest are unknown or nothing happens.
I get the same stuff
witch:
switch: show run
Unknown cmd: show
switch:
switch: en
Unknown cmd: en
switch: show run
Unknown cmd: show
switch:
switch:
switch:
switch:
switch:
switch: exit
Unknown cmd: exit
switch:
switch:
switch:
switch: conf
Unknown cmd: conf
switch: show ver
Unknown cmd: show
switch: config-register
Unknown cmd: config-register
switch: show version
Unknown cmd: show
switch:

I tried to load new ios but that fails telling me boot is interrupted and other errors. I am not sure this switch is either dead or I may be doing something wrong.
Any help I would appreciate

clarson · August 2017

you are at the rommon prompt. This is either the ios is corrupted or can not find an ios to load.

you can type a "?" to see the valid commands

so an "dir flash:" to see if there is an ios loaded on to the switch.

if there isn't an ios, then you get to use xmodem to download one.

thomas_ · August 2017

Or boot from a TFTP server and then once the switch is booted copy the image onto the device using TFTP or SCP.

Molla_123456 · August 2021

Can any one give me the steps

JDMurray · August 2021

load ios cisco switch on Google

TechGromit · August 2021

The IOS version your running would be helpful. The big issue I have with Cisco is as they release new IOS versions the command set can change quite a bit. For example one version of the IOS, a "Software clean" command would delete any unused files to free up space in flash. Now the in the current version i have loaded, "request platform software package clean switch all file flash:" is the command, it's not even remotely close to the other versions command set. Some commands stay the same, some change, some are deleted. Fun with Cisco.

unknown cmd error on my 3560 E switch

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