A LAN network is a group of connected computers that share data and resources. A LAN network diagram shows the components and connections of the network, including physical and logical topology. It helps with visualization, troubleshooting, and network growth.
A local area network (LAN) is a group of two or more computers that are connected in some way to be able to communicate with each other. Through the network, computers are able to share data and, in some cases, resources. A LAN network diagram is a drawing that shows the components of a network and how they are connected. The diagram creates, in a sense, a map of the network.
A LAN network diagram can take a variety of forms, from very elaborate to quite basic. Regardless of how sophisticated or basic the network diagram is, it is imperative that every component of the network is included. In the field of information technology, this diagram is often referred to as a topology. Network administrators work with what is known as physical topology and logical topology.
The physical topology shows the locations of various devices, also called nodes in the network. These include devices such as computers, routers and switches. It also includes the location of any wiring closets where equipment racks might be housed. A good network diagram of this type will usually be drawn on a floor plan of the building and show how the cables connecting the network components are routed.
Logical topology is used to demonstrate the path that data follows as it travels through the network. It deals in particular with areas in which network functions take place, such as routing or switching. A LAN network diagram designed as a logical topology will often include the Internet Protocol (IP) address of each of the nodes.
There are a number of reasons to use network diagrams. Drawing a diagram before building a network helps visualize the configuration in advance. It can help determine the most efficient routes for cables and the best locations for peripheral devices such as wireless access points.
An even greater benefit comes from the network diagram after a network is up and running. A LAN network diagram can be an invaluable troubleshooting tool for a network administrator. It helps trace connectivity issues by being able to determine which devices are connected to each other without the need to try and trace a wire, which is often impossible. For a technician who may not be familiar with networking, this information may be indispensable.
In addition to being an effective troubleshooting tool, the network diagram can help you grow your network. The ability to view the network layout on paper allows the network administrator to determine the most efficient means of adding new components. The LAN network diagram can be updated whenever new components are added.
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