13Ethernet networkingWired Ethernet networkingAn wired Ethernet network consists of two or morecomputers connected together through an Ethernetcable. This connection type is commonly used in officesaround the world and can be used to build computernetworks in the home.Ethernet, Fast Ethernet, or Gigabit EthernetEthernet is available at three different speeds.Standard Ethernet runs at 10 Mbps, Fast Ethernet runsat 100 Mbps, and Gigabit Ethernet runs at 1000 Mbps.Most home networks are built using Standard or FastEthernet components. Business networks are typicallybuilt using Fast or Gigabit Ethernet components.To create a wired Ethernet network, you or yourelectrician must install special Ethernet cables in yourhome or office.Using a routerThe most common way to set up a wired Ethernetnetwork is Dynamic Host Control Protocol (DHCP)using a router. A DHCP network configuration uses arouter to automatically assign IP addresses to eachcomputer or network device. For information onsetting up a router, see the router’s documentation.Example router-based Ethernet networkThe following is an example of a wired Ethernetnetwork. The network is made up of a router, a cableor DSL modem, your computers, and cables connectingeach of these components. The router is the centralcontrol point for the network.ImportantCheck local code requirements before installing Ethernet cableor other wiring in your home or office. Your municipality mayrequire you to obtain a permit and hire a licensed installer.TipTo add the ability to access a wireless Ethernet network toyour wired Ethernet network, connect an access point to the routeror use a router that has a built-in access point.