XPress™ DR+ Industrial Device Server User Guide
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12: Troubleshooting
This chapter discusses how you can diagnose and fix errors quickly without having to contact a
dealer or Lantronix. It helps to connect a terminal to the serial port while diagnosing an error to
view summary messages that may display. When troubleshooting, always ensure that the
physical connections (power cable, network cable, and serial cable) are secure.
Note:
Some unexplained errors might be caused by duplicate IP addresses on the
network. Make sure that your unit's IP address is unique.
When troubleshooting the following problems, make sure that the unit is powered up. Confirm that
you are using a good network connection.
Problems and Error Messages
Note:
For information about diagnostic LEDs, see
Table 12-1. Problems and Error Messages
Problem/Message
Reason
Solution
When you issue the
ARP –S
command in Windows, the "ARP
entry addition failed: 5" message
displays.
Your currently logged-in user
does not have the correct rights
to use this command on this PC.
Have someone from your IT
department log you in with
sufficient rights.
When you attempt to assign an
IP address to the unit by the
ARP method, the "Press Enter
to go into Setup Mode" error
"(described below) message
displays. Now when you Telnet
to the device server, the
connection fails.
When you Telnet to port 1 on
the device server, you are only
assigning a temporary IP
address. When you Telnet into
port 9999 and do not press
Enter
quickly, the device server
reboots, causing it to lose the IP
address.
Telnet back to port 1. Wait for it
to fail, then Telnet to port 9999
again. Make sure you press
Enter
quickly.
When you Telnet to port 9999,
the "Press Enter to go into Setup
Mode" message displays.
However, nothing happens when
you press
Enter
, or your
connection closes.
You did not press
Enter
quickly
enough. You only have 5
seconds to press
Enter
before
the connection closes.
Telnet to port 9999 again, but
press
Enter
as soon as you see
the "Press Enter to go into
Setup Mode" message.
When you Telnet to port 1 to
assign an IP address to the
device server, the Telnet window
does not respond for a long
time.
You may have entered the
Ethernet address incorrectly
with the ARP command.
Confirm that the Ethernet
address that you entered with
the ARP command is correct.
The Ethernet address may only
include numbers 0-9 and letters
A-F. In Windows and usually in
Unix, the segments of the
Ethernet address are separated
by dashes. In some forms of
Unix, the Ethernet address is
segmented by colons.
