Loopback and laser shutdown are useful NE maintenance functions. Performing these functions may interrupt services at the port and may also interrupt the communication between the NE and the Web LCT. Hence, you can set automatic disabling before performing loopback or laser shutdown so that the NE automatically cancels the loopback or laser shutdown.
If a port is the only way for an NE to communicate with the Web LCT, performing a loopback or laser shutdown at the port results in the loss of communication. Before performing a loopback or laser shutdown, you must set automatic disabling for this NE. Otherwise, after the communication is lost, you cannot use the Web LCT to log in to the NE to disable the loopback or laser shutdown.