B-1
B: Troubleshooting
Monitor Mode
Monitor Mode is a command-line interface used for diagnostic purposes. There are two
ways to enter Monitor Mode: locally via the serial port or remotely via the network.
Entering Monitor Mode Via the Serial Port
To enter Monitor Mode locally:
1
Connect a console terminal or PC running a terminal emulation program to the
Device Server’s first serial port (CH 1). The default serial port settings are 9600
baud, 8 bits, no parity, 1 stop bit, no flow control.
2
Cycle the Device Server’s power (power off and back on). After power-up, the self-
test begins and the red Diagnostic LED starts blinking. You have one second to do
one of the following:
u
To enter Monitor Mode with valid network connections, type zzz.
u
To enter Monitor Mode without valid network connections, type yyy.
Note:
The easiest way to enter Monitor Mode is to hold down the z or y key
at the terminal while powering up the Device Server.
A 0> prompt indicates that you have successfully entered Monitor Mode.
Entering Monitor Mode Via the Network Port
To enter Monitor Mode using a Telnet connection:
1
Establish a Telnet session to the configuration port (9999).
2
Immediately after the following message displays, type M (upper case).
Figure B-3: Entering Monitor Mode Via the Network
A 0> prompt indicates that you have successfully entered Monitor Mode.
*** Lantronix Universal Device Server ***
Serial Number 1400280 MAC address 00:20:4A:14:01:18
Software Version 04.0b7 (000428)
Press Enter to go into Setup Mode
