User guide
Chapter 5 Configuring Advanced Functions 25
Note: About TCP and UDP Port Numbers
Digi device servers use the TCP and UDP port numbering conventions
described in the following table:
You must ensure that the application or device that initiates communication
with the device server uses these ports. If they cannot be configured to use
these ports, you can change what is known as the “base socket” on the
device server, which allows you to use different port numbers to designate a
Telnet or raw connection to the serial port. See "Changing the Base Socket:
Procedure" on page 25 for more information.
Changing the Base Socket: Procedure
1. Access the configuration by opening a web browser and entering the
device server’s IP address in the URL window.
2. Log on to the device server as the root user (User Name root). The
default root password is dbps.
3. From the main menu, click Network.
4. Use the base socket field to change the base socket. Specify any
number between 1899 and 50000. Telnet connections will use the base
socket value plus one. Raw connections will use the base socket value
plus 101 (one-hundred one). The following table illustrates how this
works:
6. Click Apply.
Serial Bridging Profile
This profile allows users to create a serial bridge. A serial bridge is a
network connection between two serial devices, each of which uses a
device server. The serial devices “think” they are communicating with each
other across a serial cable using serial communication techniques. There is
no need to reconfigure the server or the serial device. Neither is aware of
the intervening network.
This profile configures each side of the bridge separately. Repeat the
configuration for the second Digi device server of the bridge specifying the
IP address of the first Digi device server.
For this connection type... Use this Port
Telnet to the serial port 2001 (TCP only)
Raw connection to the serial port 2101(TCP and UDP)
If the base
socket is...
Then Telnet
uses...
Then Raw
uses...
3000 3001 3101
4151 4152 4252
8025 8026 8126