Keri Systems NXT Network Connection - Manual (Page 9)

NXT Network Connection
Troubleshooting Guide
Page 9 of 11 P/N: 01508-001 Rev. A
When a ping fails, it will show a Request timed out.
Figure 6: Failed Ping
5.3 Trace Route
The Trace Route utility displays the route path to a designated network device. If a ping fails, the Trace Route utility can
be used to see at which point the packet failed. This tool is especially useful in troubleshooting connections that cross
multiple routers.
5.4 Telnet
Telnet is a utility that provides a command line interface on a remote device. The NXT Controllers provide for some basic
troubleshooting using the Telnet utility. Generally speaking, if you are able to successfully ping a controller, you will be
able to use the controller’s Telnet utility.
Telnet is useful to verify the controller’s configuration and network settings, display connections the controller has to
other devices or verifying a communication path to the DoorsNXT Server.
The Telnet utility is launched from a command prompt. Open a command window and at the command prompt, enter:
c:\>telnet <ip address> 2323
The telnet command will establish a connection with the designated IP Address at port 2323. When a connection is
completed, the controller will display a command prompt similar to the one below:
Welcome to IPCOM SHELL. Type help for a list of commands.
192.168.109.206#0>
Once the command prompt is displayed, the controller can execute a variety of commands. The command prompt consists
of the controller’s IP Address and the interface number that telnet is connected to. For the NXT controller, the interface
number will always be zero.