We lost power and stack rebooted into Layer 3 mode. How to revert to layer 2
and retain configs?
We lost power to our switching rack several days ago and our UPS batteries also depleted, so all the switches rebooted when the power came back on. To my surprise they came back up in layer 3 mode, and I can no longer access the GUI or CLI without using the console cable. We are only using Layer 2 functionality. The code on these switches is very different than what I'm used to!
A couple of questions:
1) Is it possible to reboot the stack back into Layer 2 mode, retaining all the configs, plus set the switches so that they come back in layer 2 mode if another power failure occurs?
2) If there is any danger in losing the configs with the above, how can I assign an IP to the switch just for management while it is in layer 3 mode? I've tried several commands, but they don't seem to work or are not valid in this configuration.