A static allocation may refer to any of the following:
1. When referring to computer memory, static allocation is a section of memory that is set aside for an application when it is first loaded. This section of memory is kept to be only used with that application, and is made available again once the application is closed.
2. When referring to a network or network device, static allocation or a static IP address is the assignment of a fixed address. For example, assigning a computer a fixed IP address of 192.168.123.114 never changes unless done so manually. This address is designated by the user and not the network.
Assigning a computer a static IP address that is not compatible with the netmask or with your network configuration will not allow the computer to communicate properly with the network.