A router[a] could be a networking device that forwards knowledge packets between laptop networks. Routers perform the "traffic directing" functions on the net. a knowledge packet is usually forwarded from one router to a different through the networks that represent the internetwork till it reaches its destination node.[1]
A router is connected to 2 or additional knowledge lines from totally different networks (as critical a network switch, that connects knowledge lines from one single network). once a knowledge packet comes in on one amongst the lines, the router reads the address info within the packet to see its final destination. Then, victimization info in its routing table or routing policy, it directs the packet to subsequent network on its journey. This creates Associate in Nursing overlay internetwork.
The most acquainted kind of routers square measure home and tiny workplace routers that merely pass knowledge, like web content, email, IM, and videos between the house computers and therefore the net. Associate in Nursing example of a router would be the owner's cable or telephone line router, that connects to the net through Associate in Nursing ISP. additional refined routers, like enterprise routers, connect massive business or ISP networks up to the powerful core routers that forward knowledge at high speed on the glass fibre lines of the net backbone. although routers square measure generally dedicated hardware devices, use of software-based routers has full-grown progressively common.
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