Hello wots an router somthing to do withs to internet and how do reinstall it
To understand what a router does, you need to know a little bit about how the Internet works. The Internet, the huge world-wide computer network that we surf the World Wide Web on, uses the TCP/IP networking protocol. Data sent over a TCP/IP network is broken down into chunks called "packets", and in order for these packets to get where they need to go on the Internet, something is needed to route them to their destinations (hence the name router). The many networks that make up the Internet are connected to each other by routers, and the routers determine what packets go where. Routers are level 3 devices on the OSI model, which means that they function at the network layer. The OSI model has 7 levels, and each one represents a function when it comes to data communication between two or more computers on a computer network. To understand what I'm talking about in the next paragraph, you need to know about the OSI model and what layer the router represents.
When the average computer user thinks of a router, they probably think of the kind that you can purchase at your local computer store, as opposed to the big ones that route packets on the Internet. That smaller kind of router allows you to share an Internet connection with multiple computers without having to use a computer that acts as a "gateway". If you have a computer network at home and the center of it is a hub or a switch, you need to use a computer that acts as a gateway ("host" computer), as hubs and switches cannot do what a router does (hubs and switches are two other devices that you can purchase at your local computer store to create a network between two or more computers). A router can "intelligently" route TCP/IP packets to IP addresses (unique identifiers on a TCP/IP network) at layer 3, while a hub is just a dumb layer 1 device that sends out packets to all of the computers attached to it, regardless of who sent them out and who they're intended for. A switch is a layer 2 device that routes Ethernet frames by MAC address; Ethernet is a networking standard that home networks are based on, a frame is the Ethernet equivalent of a TCP/IP packet (chunk of data), and a MAC address is a computer's unique identifier at layer 2 (datalink) on an Ethernet network. Although a switch is "smarter" than a hub, it still can't do what a router does. The functions that a router performs are necessary for communication between the computers on your network and computers on other networks on the Internet at the network layer (TCP/IP). Probably the most important thing that a router does is perform NAT, which stands for Network Address Translation. NAT is a technology that allows computers on a network behind an Internet connection to communicate with computers outside the network; to the rest of the Internet the network is a single IP address (the one your ISP gave you), and NAT allows for incoming and outgoing connections between the computers on the network who have their own "internal" IP addresses and the computers outside the network who see only the ISP-assigned IP address. A "gateway" computer using Internet connection sharing software like the kind that Windows comes with performs the same functions as a hardware router, but there are some disadvantages that come with using that setup, like how all of the computers on the network lose Internet access if the gateway computer is offline. If you want to share an Internet connection between two or more computers in your home, a hardware router is the best thing to get for it.
Dec 04, 2009 |
Belkin Wireless G Plus MIMO (F5D9230-4)...