USRobotics NETServer/16 User Manual download pdf (Page 234)

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B-6 Addressing Schemes

CIDR - Each Supernet is treated as a single entity

Since supernet addressing is a fairly complex mechanism, the

easiest way to understand it is to walk through the setup

process.

Step 1 - Select a netmask for each supernet

Each supernet must have a netmask assigned to it. The netmask

for an individual supernet can be, but does not have to be, the

same as the netmask for any other supernet.

As in subnetting, a netmask creates a division between the

network portion of an address and the host portion of an

address. However, since the network you are defining is larger

than a Class C network, the division you are creating is not in

the fourth octet of the address. For this example, we’ll be

creating supernets composed of fewer than 254 Class C net-

works. So, their netmasks will actually be splitting up the third

octet in their IP addresses.

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USRobotics NETServer/16 User Manual Page 234

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