Documentation
LiveWire
Starting / Shutting down LiveWire
If your power cables and Ethernet cable are connected to LiveWire, you can access iDRAC even if LiveWire is off. Once iDRAC is accessed, you can use iDRAC to start LiveWire.
To start or shut down LiveWire:
From the iDRAC dashboard, if LiveWire is off click Power On System, or Graceful Shutdown if it is on.
NOTE: If you have a remote console open, you can also select the start or power off commands from the Power menu of the remote console.

You can also issue the #poweroff command (recommended) from the remote console to shut down LiveWire.