Basic Network Management - Chapter 16: Wireless LAN

Chapter 16: Wireless LANObjectiveWhat is Wireless LAN?What is infrastructure Mode?What is ad-hoc mode?IEEE 802.11a,802.11b,802.11gWireLess LanWireless Lan connect the computers and network communication devices within geographically limited areas.WireLess Lan use frequency band 2,4GhzWireless LanWireLess Lan does not require:Lining-upLine of sightWireless LanWireLess Lan has many advantages in connecting the devices together in your office.Fast deployment.Easy installation,easy and convenient to operate.Easy upgarde and maintenance.Network access everywhere,everytime.Wireless LanIEEE 802.11 : Defined network standards for physical components of wireless LanIEEE 802.11 : built in 1997Wireless LanIEEE 802.11 has two modes:Infrastructure modeAd-hoc modeWireless LanInfrastructure mode:Wireless Lan use Access-pointAnd computers with wireless Card are connected together through Access PointWireless LanAd-hoc mode:Devices which can connect together directlyWithout Access pointWireless LanIEEE 802.11b :Wireless Lan Speed: 1Mbps – 11MbpsFrequency Band : 2,4 Ghz ISM Band(Insdustrial Scientific Medical Band)Wireless Lan IEEE 802.11b Plus (IEEE 802.11b +)Improved from IEEE 802.11 bFrequence band : 2,4Ghz DSSSSpeed :22 MbpsWireless LanIEEE 802.11 a:Wireless Lan.Speed : 6Mbps – 54 MbpsFrequence band : 5Ghz or moreWireless LanIEEE 802.11a is :Not compatible with 802.11b and 802.11b PlusWireless LanIEEE 802.11g is :-Wireless LanSpeed : 1Mbps – 54 Mbps Compatible with 802.11b and 802.11a Wireless LanWireless : IEEE 802.11a,IEEE 802.11b, IEEE 802.11b plus, IEEE 802.11 g use Access method CSMA/CD(Carrier Sense Multiple Access/Collision Detection)Wireless LanComponents of Wireless Wireless Access PointWireless LAN PCI CardWireless LAN PCMCIA Card/CarbusWireless Print ServerWireless LanWireless Access PointSimilar Hub/Switch in WirelineConnect clients use frequence band : 2,4Ghz-2,4835GhzDistance from access point to wireless client: depend on environment , devices, standard of network( IEEE 802.11a, IEEE 802.11b .)Wireless LANWireless Access PointWireless LanWireless LAN PCI CardNet card for destop computerPCIOperate on many channelsWireless LanWireless LAN PCI cardWireless LanWireless LAN PCMCIA Card/CarBusNet card for Notebook/LaptopPCMCIAWireless LanWireless LAN PCMCIA card/CarbusWireless LanWireless Print ServerDevices which share printer in wireless LANWireless LanWireless Print ServerWireless LanWireless LanWireless LanWireless LanThe roaming process is seamless and transparent to the user. Wireless LanAccess Point as Repeater SummaryAd-hoc ModeInfrastructure ModeIEEE 802.11a,802.11b,802.11g