If you are configuring a new switch stack and for some reason the slave unit keeps displaying THIS UNIT WILL BE SHUTDOWN, there is probably a stack configuration issue.
- Plug a console cable into switch
- Boot into the startup menu by pressing Enter/Return or ESC when the splash screen appears
- Select 5 – Stack Menu
- Select 2 – Set Unit Stack ID
- Set the ID to 0 or the actual stack number if its known. If you want to be safe, select 0.
- Back out of the menu and let the switch reboot.