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SECTION 2 – SOFTWARE CONFIGURATION
2-6
Understanding The Network Configuration
The IP Address is a unique address that identifies a device on the internet or local network.
Each device must have its own IP address. In order for devices to communicate with each
other, they must both be connected to the network and they must have IP addresses that are
on the same subnet. A subnet is a logical division of a larger network. Members of one
subnet are generally not able to communicate with members of another. Subnets are defined
by the choices of IP addresses and Subnet Masks.
If your PC's Subnet Mask is set to 255.255.255.0 (a common setting known as a Class C
Subnet Mask) then your machine can only talk to another network device whose IP address
matches yours in the first three octets (the numbers between the dots in an IP address are
called octets). For example, if your PC is on a Class C subnet and has an IP address of
10.17.100.100, it can talk to a device at 10.17.100.200 but not one at 10.17.99.200. If you
change your Subnet Mask to 255.255.0.0 (Class B) you can talk to any device whose first
two octets match yours. Be sure to ask your system administrator before doing this. Your
network may be segmented for a reason.
Changing Network Configuration
Computer
To change your Computer Network Configuration
on Windows 10. This procedure requires
Administrator privileges.
• From the Start Menu, search for "View
Network Connections".
• In the window that appears, right-click on the
appropriate connection and select Properties.
• In the window that appears, select "Internet
Protocol Version 4 (TCP/IP v4)" and click the
Properties button.
• In the window that appears, select "Use the
following IP address".
• Enter the desired IP address and Subnet mask
(refer to the image at right).
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