As shown in the figure, the allocation of network layer address space within the corporate network needs to be well designed. Address assignment should not be random. There are three primary considerations when planning address allocation.

Assigning Addresses within a Network

Within a network, there are different types of devices, including:

When developing an IP addressing scheme, it is generally recommended to have a set pattern of how addresses are allocated to each type of device. This benefits administrators when adding and removing devices, filtering traffic based on IP, as well as simplifies documentation.