I recently purchased a Cisco 4948 for use in my homelab to start learning about cisco gear. I was able to get it up and running without many issues, had it all configured but as happens in a homelab, swapping some gear around I powered down the device and upon reboot my settings were gone. So I reconfigured and power cycled it to test and it did it again.
After some more reading I figured out it had to do with the configuration register set to 0x2141 which ignores startup config. So I set it to 0x2102 which I understand is the correct setting to load the startup-config but it now enters 'rommon'. I am saving my config, and can confirm it is saved as if I enter 'boot' in rommon it will boot up with all my settings. Is 0x2102 the correct register to load my settings? Or could anything else be causing this?
I am a complete cisco noob, I have been reading a lot but maybe I am missing something obvious to some with actual experience. I appreciate any help or direction you can offer.
Best Answer
Check your configuration for a boot system command. If one exist, double check the filesystem, path and filename are correct. You could copy the full filesystem and filename from your command and then type dir followed by filesystem:filename and see if it actually shows the file exists.
If the command is set incorrectly, delete it and then re-add with correct location. Alternatively, try deleteting the command altogether and booting.
Sometimes, the command doesn’t exist, but you may need it if the IOS is in the wrong location, in this case, add the command yourself
Here is an example of the command:
Make sure it matches your filesystem (bootflash in this case) and filename exactly. If you are using a path within the filesystem, make sure you include it.