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Lantronix Xport Direct+ loses static IP address and is unreachable when a new network device is plugged in.

Posted on 2013-02-03
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Last Modified: 2013-02-04
Hello,

We have a Lantronix Xport Direct+ (Ethernet to RS-232) embedded device that allows us to interface a piece of machinery with a serial interface to the network via TCP/IP.

The Xport is configured via Lantronix provided "Device Installer Software" which allows the IP address to be set.  The address for the Xport is STATIC and assigned outside the DHCP address pool to 192.168.0.200.  The issue is that twice now a device has been installed on the network either PC or printer it then receives an IPv4 address via a Windows DHCP server within the scope of 192.168.0.10-50. the device functions properly. THEN, the xport device and attached machine go down.  I load up lantronix device installer and the statically assigned IP is reset to a random address outside our network scope, the gateway is blank, and the subnet is also incorrect.

Does anyone have any knowledge with this device or what may be happening?  

Also,  It was suggested by the company manufactures the equipment that a line transient via ethernet (power surge, spike, etc) may be causing this.  Even though I didn't feel this was the case (no other equipment on the network is having issues) I installed APC ethernet line protectors (meant for lighting strikes with a 60V upper limit) and the issue persists.

Thank you,

David
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Question by:drudesill
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Lantronix responded this is an issue with the Xport Direct+ current (production) firmware and recommended disabling the Device Installer port to remedy the issue.  SNMP could be used to perform management tasks instead.

David
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