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The Former Router Has Been Widely Used In Various Industries
Jul 09, 2018

A router is a device that connects to various local area networks and wide area networks in the Internet. It automatically selects and sets routes according to the channel conditions, and sends signals in the optimal path in order. The router is the hub of the Internet, "traffic police." At present, routers have been widely used in various industries, and various grades of products have become the main force for realizing internal connections of various backbone networks, interconnecting backbone networks, and backbone network and Internet interconnection services. The main difference between a route and a switch is that the switch occurs at the second layer (data link layer) of the OSI reference model, and the route occurs at the third layer, the network layer. This difference determines that routing and switches need to use different control information in the process of moving information, so the way they implement their respective functions is different.

A router, also known as a gateway, is used to connect multiple logically separate networks. A logical network is a single network or a subnet. When data is transferred from one subnet to another, it can be done through the routing function of the router. Therefore, the router has the function of judging the network address and selecting the IP path. It can establish a flexible connection in a multi-network interconnection environment, and can connect various subnets by completely different data packets and media access methods, and the router only accepts the source station or The information of other routers is an interconnected device at the network layer.

Among the three main technologies used by the core Internet in the future, fiber and DWDM are already mature and ready-made. If there is no router corresponding to the original fiber bandwidth provided by the existing fiber technology and DWDM technology, the new network infrastructure will not be able to fundamentally improve performance, so the development of high-performance backbone switching/router (terabit router) has become An urgent request. 


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