Lantronix 900-422 User Manual

 

XPress DR+ User Guide 

99 

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.  

When troubleshooting the following problems, make sure that the unit is powered up. 
Confirm that you are using a good network connection.  

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.