How The Emp Works - NEC NEAX Express Service & Reference Manual

How the EMP Works

The EMP shares use of the COM 2 port with your system. When the EMP has control
of the port, the port operates in command state. When the system has control of it, the
port operates in redirect state. When connecting to a server, the EMP checks to
determine the current COM 2 port state. The following discussion covers how the EMP
functions in each state:
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Command state is the default COM 2 state. In this state, the EMP communicates
with the server's firmware, allowing the client to remotely reset or power the server
up or down. The client can also view the server's System Event Log (SEL), Field
Replaceable Unit (FRU) information, or Sensor Data Record (SDR) table.
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In console redirect state, the EMP serves as a PC ANSI terminal window for BIOS
console redirection. Commands typed in this terminal window are transmitted
through BIOS to the server's console, and text displayed on the server console are
displayed on the EMP Console's terminal window. With the EMP in this state, you
can remotely view boot messages, access BIOS setup, and run DOS text mode
applications through the EMP Console's terminal window.
EMP Console in Command State
Emergency Management Port C-3