Lantronix Device Installer User Manual page 10

To resolve this issue, configure your PC with a static IP address on the same subnet as the
address you are assigning to your device. For information on configuring a static IP address in
Windows, see the Windows Help files. You can access Windows Help files by clicking the
Windows Start button and selecting Help. Search in Windows Help for static IP address.
WARNING: Before you change the network settings on your PC, be sure to write them
down so you can restore the settings after assigning an IP address to your device.
IP Addresses and Subnetting
To understand why DeviceInstaller is failing and how to resolve this issue, you must have some
general knowledge of TCP/IP and subnetting.
IP addresses are separated into network classes. Network classes are also known as subnet
classes. The letters A, B and C denote the subnet/network classes. An IP address is made up of
four octets, each separated by a decimal point, as shown below:
AAA.BBB.CCC.DDD
A's = First Octet
B's = Second Octet
C's = Third Octet
D's = Fourth Octet
To check your PC's current IP configuration on Windows 2000 or XP:
1. Click Start --> Run.
2. At the Open prompt, type cmd. A command window opens.
3. At the command window, type ipconfig. Your Windows TCP/IP configuration displays.
To check your PC's current IP configuration on Windows 98:
1. Click Start --> Run.
2. At the Open prompt, type command. A command window opens.
3. At the command window, type ipconfig. Your Windows TCP/IP configuration displays.
Class A Subnets and Addresses
Class A networks use a subnet mask of 255.0.0.0. This subnet mask indicates that the first octet
in each IP address on the network must be the same number. This allows network devices to
communicate on the Local Area Network (LAN).
If your PC is on a class A network (meaning it's using a subnet mask of 255.0.0.0), the first octet
of your PC's IP address and the first octet of the IP Address you are assigning to your Lantronix
device must be the same number.
Class A Example:
Your PC is configured with the IP and subnet mask below:
10.100.110.120 – IP Address
255.0.0.0 – Subnet Mask
Your Lantronix device must be assigned an IP that is:
10.xxx.xxx.xxx
where the x's are an available IP address on the network.
IP Addresses
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