Lantronix 900-588 Troubleshooting, Problems and Error Messages, Problem/Message Reason Solution

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 Micro125 is powered up. Confirm that you are using a good network connection.

Problems and Error Messages

Problem/Message	Reason	Solution
When you issue the ARP –S	Your currently logged-in user	Have someone from your IT
command in Windows, the	does not have the correct rights	department log you in with
"ARP entry addition failed: 5"	to use this command on this	sufficient rights.
message displays.	PC.
When you attempt to assign an	When you Telnet to port 1 on	Telnet back to Port 1. Wait for it
IP address to the unit by the	the device server, you are only	to fail, then Telnet to port 9999
ARP method, the "Press Enter	assigning a temporary IP	again. Make sure you press
to go into Setup Mode" error	address. When you Telnet into	Enter quickly.
"(described below) message	port 9999 and do not press
displays. Now when you Telnet	Enter quickly, the device server
to the device server, the	reboots, causing it to lose the IP
connection fails.	address.
When you Telnet to port 9999,	You did not press Enter quickly	Telnet to port 9999 again, but
the "Press Enter to go into	enough. You only have 5	press Enter as soon as you see
Setup Mode" message displays.	seconds to press Enter before	the "Press Enter to go into
However, nothing happens	the connection is closed.	Setup Mode" message.
when you press Enter, or your
connection is closed.
When you Telnet to port 1 to	You may have entered the	Confirm that the Ethernet
assign an IP address to the	Ethernet address incorrectly	address that you entered with
device server, the Telnet	with the ARP command.	the ARP command is correct.
window does not respond for a		The Ethernet address may only
long time.		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 with colons.
	The IP address you are trying to	Confirm that your PC has an IP
	assign is not on your logical	address and that it is in the
	subnet.	same logical subnet that you
		are trying to assign to the
		device server.

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