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A router [a] is a computer and networking device that forwards data packets between computer networks, including internetworks such as the global Internet. [2] [3] [4] Routers perform the "traffic directing" functions on the Internet. A router is connected to two or more data lines from different IP networks.
An early example of a wireless router The internal components of a wireless router. A wireless router or Wi-Fi router is a device that performs the functions of a router and also includes the functions of a wireless access point. It is used to provide access to the Internet or a private computer network.
The gateway address (or default gateway) is a router interface connected to the local network that sends packets out of the local network. The gateway has a physical and a logical address. The gateway has a physical and a logical address.
Routers perform the traffic directing functions on the Internet; data packets are forwarded through the networks of the internet from router to router until they reach their destination computer. Routing algorithms determine the specific choice of route. Each router has a prior knowledge only of networks attached to it directly.
L1/L2 routers act like area border routers (ABRs) between L1 routers and L2 routers by keeping two databases - L1 database and L2 database. Here is very important role of L1/L2 router - if it is connected to L2 router in another area, then it sets ATT (ATTached bit) in its L1 LSP.
Routing is the process of selecting a path for traffic in a network or between or across multiple networks. Broadly, routing is performed in many types of networks, including circuit-switched networks, such as the public switched telephone network (PSTN), and computer networks, such as the Internet.
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