12: Troubleshooting

 

 

 

 

 

 

 

Problem/Message

Reason

Solution

 

 

 

 

 

 

 

You can ping the device server,

There may be an IP

Turn the device server off and

 

 

but not Telnet to the device

address conflict on your

then issue the following

 

 

server on port 9999.

network

commands at the DOS prompt

 

 

 

You are not Telneting to

of your computer:

 

 

 

 

 

 

 

port 9999.

ARP -D X.X.X.X (X.X.X.X is the

 

 

 

The Telnet configuration

IP of the device server).

 

 

 

 

 

 

 

port (9999) is disabled

PING X.X.X.X (X.X.X.X is the

 

 

 

within the device server

IP of the device server).

 

 

 

security settings.

If you get a response, then

 

 

 

 

there is a duplicate IP address

 

 

 

 

on the network. If you do not

 

 

 

 

get a response, use the serial

 

 

 

 

port to verify that Telnet is not

 

 

 

 

disabled.

 

 

 

 

 

 

 

The device server appears to

If you are sure that the

You can check to see whether

 

 

be set up correctly, but you are

serial port setting is

there is a socket connection to

 

 

not communicating with your

correct, then you may not

or from the device server by

 

 

device attached to the device

be connecting to the

checking the state of CPx, if

 

 

server across the network.

correct socket of the

one of the CPs has been

 

 

 

device server.

configured for Serial Channel

 

 

 

Another possibility is that

Status LED functionality.

 

 

 

If the state of CPx is blinking

 

 

 

the device server is not

 

 

 

set up correctly to make

consistently, then there is a

 

 

 

a good socket connection

good socket connection.

 

 

 

to the network.

If the state of CPx is low, use

 

 

 

 

 

 

 

 

the Connect Mode option C0

 

 

 

 

for making a connection to the

 

 

 

 

device server from the network.

 

 

 

 

Use Connect Mode option C1

 

 

 

 

or C5 for a connection to the

 

 

 

 

network from the device server.

 

 

 

 

See the full list of Connect

 

 

 

 

Mode options in Connect Mode

 

 

 

 

 

 

 

When connecting to the Web-

Your computer is not

Make sure that port 30718

 

 

Manager within the device

able to connect to port

(77FEh) is not blocked with any

 

 

server, the "No Connection

30718 (77FEh) on the

router that you are using on the

 

 

With The Device Server"

device server.

network. Also, make sure that

 

 

message displays.

 

port 77FEh is not disabled

 

 

 

 

within the Security settings of

 

 

 

 

the device server.

 

 

 

 

 

 

xPico User Guide

75

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Lantronix 900-618 manual Troubleshooting
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