Understanding wan technologies
Advantages Simplicity Availability Cost Disadvantages Low data rates Relatively long connection setup time
Bạn đang xem nội dung tài liệu Understanding wan technologies, để tải tài liệu về máy bạn click vào nút DOWNLOAD ở trên
WAN Connections Understanding WAN TechnologiesWide-Area NetworkNeed for WANsWANs vs. LANsWAN Access and the OSI Reference ModelWAN DevicesRoutersTerminal serversModemsDSU/CSUWAN networking devicesATM switchesFrame Relay switchesPSTNPhysical Layer: WANsSerial Point-to-Point ConnectionsWAN—Multiple LANsWAN Data-Link ProtocolsHDLCPPPFrame Relay (LAPF) ATMWAN Link OptionsCircuit SwitchingPublic Switched Telephone NetworkPSTN ConsiderationsAdvantagesSimplicityAvailabilityCostDisadvantagesLow data ratesRelatively long connection setup timeLeased LineWAN Connection BandwidthConfiguring a Serial InterfaceEnter global configuration mode.RouterX(config-if)#clock rate 64000RouterX(config-if)#RouterX(config)#interface serial 0/0/0 RouterX(config-if)#RouterX#configure terminalRouterX(config)#RouterX(config-if)#bandwidth 64RouterX(config-if)#exitRouterX(config)#exitRouterX#Specify interface.Set clock rate (on DCE interfaces only).Set bandwidth (recommended).Serial Interface show controller CommandShows the serial cable type
Các file đính kèm theo tài liệu này:
- 20_wan_overview_8522.ppt