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Subnetting divides a larger network into smaller components, each with a unique IP address. It allows for easier isolation of performance problems and improves network maintenance. CIDR is another approach that connects smaller components to a larger network. Subnetting improves the efficiency of traditional networks and allows for easy addition or removal of subnets.
Subnetting is a network design strategy that separates a larger network into smaller components. When connecting via the larger network, each subnetwork, or subnetwork, operates with a unique IP address. All systems assigned to a particular section will share common values for both the subnet and the network as a whole.
Several tools are needed to establish the set of subnets and still allow them to function as a complete system when needed. Also, a bridge or routing equipment is typically used to connect subnets together. The assignment of IP addresses is also important, as each device or user connected to a given group will be assigned an IP address using the same prefix, but each subnet will have a different prefix.
Dividing network sectors into a number of subnetwork components has a couple of practical advantages. First, by separating the larger network into distinct but interconnected subsections, it’s often easier to isolate performance problems and fix one of these subsections without having to shut down functions taking place in the others. The subnetting process can also improve the overall network maintenance process by making it possible to perform diagnostics or other tests without slowing down or affecting the functionality of other components that make up the larger network.
A different approach to network construction is known as Classless Inter-Domain Routing (CIDR) and it also creates a number of subnetworks. Instead of dividing an existing network into small components, CIDR takes smaller components and connects them to a larger network. This can often happen when a business is acquired by a larger company. Instead of eliminating the network developed and used by the newly acquired company, the company chooses to continue to operate that network as a subsidiary or as an add-on to the corporate network. In effect, the purchased entity’s system becomes a subnet of the parent company’s network.
As the use of the Internet has continued to become central to the technology used by many businesses for communication, data storage and transfer, and even general office functions, the capacity of a traditional Class A, B o C to run at maximum efficiency has become more difficult . Using the subnet, the larger network can add or remove subnets as needed and assign devices and other resources to a given subsection with relative ease. In terms of logical layout, this design improves the ability to handle the larger network, as well as helps structure subsections exactly as needed without having to change protocols for the entire network.
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