At the behest of the IT, the router, also known as router, router, or router it's a hardware device used to interconnect a computer network; operates in the layer three of the OSI Model. The main virtue that this device offers us is the assurance regarding the satisfactory routing of data packets between networks. Or failing that, it helps to find the best route that the data packet in question should take.
Routers mainly provide a solution to connectivity within companies, between companies and the Internet, and within Internet service providers. Meanwhile, they also observe a domestic use that proliferates more every day, to connect homes to broadband internet service, such is the case of IP over cable or over ADSL, however, in terms of the functionality they propose, that It is similar to the generic router, routers used in homes or residential routers use network address translation instead of routing. Because the residential router instead of connecting the computers to the network directly, it will have to make the local computers look like a single computer.
Although originally and traditionally routers have dealt with fixed networks, in recent times those routers that interface between fixed networks and mobile networks (Wi-Fi, GPRS, EDGE, UMTS, among others) have become very popular. The wireless router, as it is formally called, shares the principle of traditional routers although it differs from its predecessors in that it allows the connection of wireless devices to the networks to which the router is connected through cable connections.
