Routing is the process of selecting a path for traffic in a network, or between or across multiple networks. It is a key component of network infrastructure, as it determines the way in which data is moved between different points on the network.
Routing is the process of selecting a path for traffic in a network, or between or across multiple networks. Routing is performed by a device, usually called a router, which is connected to two or more data lines from different networks. When a data packet comes in on one of the lines, the router reads the address information in the packet to determine its ultimate destination. Then, using information in its routing table or routing policy, it directs the packet to the next network on its journey.
Routing is a key function of the Internet and other networks. Without routing, data packets would not be able to reach their destination. Routing is also used to provide quality of service (QoS) by selecting different paths for different types of traffic. For example, voice traffic may be routed over a dedicated line, while data traffic may be routed over a less expensive line.
Routing is typically performed by dedicated hardware devices, such as routers, but it can also be done by software running on general-purpose computers. In addition, routing protocols are used to exchange information between routers so that they can make informed decisions about which paths to use. Common routing protocols include RIP, OSPF, BGP, and IS-IS.
Routing is an important part of network design. It is used to determine the most efficient way to route traffic between different networks, and to ensure that traffic is routed in a secure and reliable manner. It is also used to provide QoS, and to ensure that traffic is routed in a way that meets the needs of the network.