A computer network is a collection of devices connected for resource sharing. A network diagram shows the physical layout, protocols, and ports used. Network devices like switches and routers are included. Monitoring tools track device failures, and automation tools simplify diagram creation.
A computer network is a collection of computing devices connected by communication devices for the purpose of sharing resources. A network diagram is the graphical representation of the computer network. Typically a network diagram will include a visual diagram that identifies computing devices and communication devices within the entire network.
Today there are multiple types of computer networks. These include local area networks (LAN) and wide area networks (WAN). Network diagrams are a tool used to describe the physical layout of a computer network. This diagram typically includes the protocols, network addresses, and open ports used by computer devices. The scope of the network diagram can range from a simple single network to a complex enterprise network project.
A network protocol is the communication standard that defines how information will be transmitted over a network to a computing device. There are many protocols available within networks today. It is important to define these protocols on the network diagram to ensure that security and architecture are applied appropriately.
A network port is the end point or channel used for transferring data between computer devices. Typically each protocol has a standard default port defined. For example, most Internet websites use HTTP (Hypertext Transfer Protocol). This protocol uses port 80 by default.
Complex computer networks require switches, routers, hubs and load balancers to ensure efficient communication across the entire network infrastructure. These network devices are usually included in a network diagram. Every communication device has the potential for failure. The network diagram can be used to locate system errors when they occur.
Network monitoring tools are used in most enterprise production networks. These monitoring tools track devices via an Internet Protocol (IP) address. When a network device fails, error messages are reported to a network administrator. The administrator will use the network diagram to determine the port and IP address of the problematic device.
The network administrator is responsible for managing and routing network traffic between devices on a computer network. It can be considered the traffic police of the communication highway. The network diagram is an invaluable diagnostic tool for the network administrator in carrying out his work.
Today there are automation tools that can be used to create network diagrams. These tools range from simple graphics creation programs to complex schematic generation tools. This software simplifies the management and creation of complex network diagrams. Typically these software packages will include predefined templates based on your network type.
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