Router meaning

routər
Frequency:
A device in a network that handles message transfers between computers. A router receives information and forwards it based on what the router determines to be the most efficient route at the time of transfer.
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The definition of a router is a service or person to transfer messages, or a device for smoothing the bottoms of grooves in wood or metal, or a computer networking device that allows multiple devices to access the Internet simultaneously through a single IP address..

An example of a router is a mail carrier.

An example of a router is a woodworking tool.

An example of a router is computer hardware that transfers Internet messages to a laptop in another room; a wireless router.

noun
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One that routs, especially a machine tool that mills out the surface of metal or wood.
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A device that forwards data from one network to another. Based on an internal routing table and the address of the destination network in the incoming packet, the router determines whether to send the packet out or keep it within the network. The traffic traversing a router is formatted in a routable protocol, the global standard being TCP/IP, or simply IP (see TCP/IP and routable protocol).At HomeIn the home or small office, a "wireless router" or "wireless gateway" is used to manage Internet traffic. The wireless router contains a built-in Ethernet switch and Wi-Fi access point (see wireless router), and the wireless gateway also includes a modem (see cable/DSL gateway). Both router and gateway have a single port to the Internet.In a CompanyIn the enterprise, routers in the local network (LAN) are dedicated to packet forwarding and connect to stand-alone modems and Wi-Fi access points. Although routers do have built-in Ethernet ports, they are often connected to additional Ethernet switches to reach more computers and printers. See Ethernet switch and access point.Routers in the CoreWithin a large enterprise, routers separate local area networks (LANs) into subnetworks (subnets) to balance traffic within workgroups and to filter traffic for security purposes and policy management. They also forward packets between the company's LANs and external networks (WANs), as well as to the Internet. Factors such as traffic load, external line costs and congestion may be taken into consideration to determine which port to forward to. See LAN and WAN.Within the Internet, very large-scale routers do all the packet switching between the national and regional backbones and are typically connected via optical fibers. Measured in millions of packets per second (see PPS), large routers handle enormous amounts of traffic. See packet switching, Ethernet, SONET, edge router and collapsed backbone.Specialized Machines or Regular PCsRouters are dedicated communications devices, and the major router vendors for enterprises and service providers are Cisco, Alcatel-Lucent, Huawei, Juniper and ZTE. Linksys, NETGEAR and D-Link make popular consumer routers. However, a Windows PC can be turned into a router with software such as NAT32 (www.nat32.com).Router TerminologyRouters used to be called "gateways," which is why the term "default gateway" means the router in your network (see default gateway). For more details on the routable protocol layer, see OSI model and TCP/IP abc's. See layer 3 switch, route server, router cluster and routing protocol.
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One that routes, especially one who prepares shipments for distribution and delivery.
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A person or thing that routs out or a tool for routing out.
  • A plane for gouging out recesses and smoothing the bottoms of grooves.
  • A machine for routing out areas on a wood or metal surface.
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A person or thing that routes; specif., a device that coordinates the transmission of data packets within and between computer networks.
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An intelligent switch capable of deciding where to forward packets based on a view of the network as a whole. A router is a programmable device that works with other routers, via a routing protocol, to establish the best path on which to forward a packet with a given address. A router can consider the network as a whole in determining the route for a given call. A router can be programmed to consider a number of factors including the addresses of the originating and destination devices, the least-cost route, the least congested route, the route with the fewest number of hops, and the geographically shortest route. Routers operate at least at Layer 3, the Network Layer, of the OSI Reference Model. Simple switches operate at Layer 2, the Data Link Layer, seeing only an individual link, and having no sense of the larger network. Depending on the applications, routers can operate at higher layers, as well, including Layer 7, the Application Layer. Routers can be capable of performing the gateway functions associated with protocol conversions such as code conversions or those necessary to connect dissimilar networks, such as circuitswitched and packet-switched networks. See also Data Link Layer, gateway, hop, Network Layer, OSI Reference Model, packet, protocol, and switch.
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