TCP and UDP network port numbering conventions

Digi devices use the following conventions for TCP and UDP network port numbering:

For this connection type...	Use this Port
Telnet to the serial port The format for this port number is as follows: 20<serial port number> Replace <serial port number> with the Digi serial port number. For example, 2001 applies to serial port 1, 2010 applies to serial port 10, and 2016 applies to serial port 16.	2001 (TCP only)
Raw connection to the serial port The format for this port number is as follows: 21<serial port number> Replace <serial port number> with the Digi serial port number. For example, 2101 applies to serial port 1, 2110 applies to serial port 10, and 2116 applies to serial port 16.	2101 (TCP and UDP)

For this connection type...

Use this Port

Telnet to the serial port

The format for this port number is as follows:

20<serial port number>

Replace <serial port number> with the Digi serial port number. For example, 2001 applies to serial port 1, 2010 applies to serial port 10, and 2016 applies to serial port 16.

2001 (TCP only)

Raw connection to the serial port

The format for this port number is as follows:

21<serial port number>

Replace <serial port number> with the Digi serial port number. For example, 2101 applies to serial port 1, 2110 applies to serial port 10, and 2116 applies to serial port 16.

2101 (TCP and UDP)

The application or Digi ConnectPort X Family device that initiates communication must use these network ports numbers. If you cannot configure the application or Digi ConnectPort X Family product to use these network port numbers, change the network port on the Digi ConnectPort X Family product.