Integrator's Manual

In the example above, the computer is communicating with the COM1000 system over the

“Local Area Connection” via an Ethernet adapter. In this case, the management PC has been

assigned the IP address 192.168.1.137. This is the IP you will be using with the TFTP server

and possibly later on with a program like VLC Multimedia Player (covered in Sections 5.1.3

and 10.1.2) when testing the system configuration.

5.3.2 Configuring Your TFTP Server

This section offers examples specific to the previously mentioned application Tftpd32. The

primary function of this tool for most COM1000 systems will be to serve as a TFTP server to

facilitate software upgrades.

The DHCP server may also be used if a particular installation needs that functionality, but you

should be aware of the effect that it will have on the system, as there is a possibility that it could

pass out new IP addresses to the COM24 cards every time one of them reboots.

The syslog server may also be used, if desired, although the version offered here is not as

feature-rich as the Kiwi syslog daemon discussed in the previous section.

Tftpd32 has proven useful for performing file transfers to the COM24 cards, but some important

limitations must be kept in mind when using it:

A successful file transfer could be prevented by any third-party firewalls or anti-virus

tools running on your computer, so you should disable them temporarily.

You must be sure that your computer and the COM24 are on the same subnet (e.g.

192.168.3.xxx with subnet mask 255.255.0.0)

Be sure to configure your TFTP server so that it points to the correct directory where the

file is saved.

The size of the file should be 10 MB or less.

The COM24‟s file-transfer mechanism has a limit of 200 total characters, so it is

suggested that you save the file to a location with a short path (e.g. C:\tftp\transfers)

instead of embedding it deep within the system.

Also, be sure that the directory and file names contain no spaces, as these will not be

recognized by the COM24‟s file-transfer mechanism (Use C:\tftp\software_upgrades

rather than C:\tftp\Software Upgrades, for example)

Be sure that the “Server Interface” field shows the IP address of your PC.

When you initially launch Tftpd32, you will see a screen similar to the one shown in Figure 16.