Router (also known as router) is a computer network device, which can transmit data packets to the destination (choose the transmission path of data) through a network. This process is called routing. A router is a device that connects two or more independent networks. Routing works in the third layer of OSI model-network layer, such as Internet protocol (Internet? Protocol (IP) layer
Basic introduction
Router A router (also called a router) is a computer network device that transmits data to a destination through a packaged network (selecting the transmission path of data). This process is called routing. A router is a device that connects two or more independent networks. Routing works in the third layer of the OSI model-the network layer.
A router is a device that connects a local area network and a wide area network in the Internet. It will automatically select and set the route according to the channel conditions, and send signals in turn by the best path. Routers are the hub of the Internet and the "traffic police". At present, routers have been widely used in all walks of life, and products of different grades have become the main force to realize the internal connection of various backbone networks, the interconnection between backbone networks, and the interconnection between backbone networks and the Internet. The main difference between routing and switch is that switching takes place at the second layer (data link layer) of OSI reference model, while routing takes place at the third layer, namely network layer. This difference determines that routing and switching need to use different control information in the process of moving information, so the ways to realize their respective functions are also different.
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