Lecture Basic network management: Chapter 16 - Trung tâm Athena

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Lecture Basic network management: Chapter 16 - Wireless LAN. Chương này cung cấp các khái niệm về wireless; các mode sử dụng trong hệ thống mạng Wireless LAN; thế nào là ad-hoc mode? Infrastructure mode?; Các tiêu chuẩn IEEE 802.11a, 802.11b, 802.11g.

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Nội dung Text: Lecture Basic network management: Chapter 16 - Trung tâm Athena

Chapter 16: Wireless LAN ATHENA
Objective  What is Wireless LAN?  What is infrastructure Mode?  What is adhoc mode?  IEEE 802.11a,802.11b,802.11g ATHENA
WireLess Lan  Wireless Lan connect the computers and network communication devices within geographically limited areas.  WireLess Lan use frequency band 2,4Ghz ATHENA
Wireless Lan  WireLess Lan does not require: • Liningup • Line of sight ATHENA
Wireless Lan  WireLess 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. ATHENA
Wireless Lan  IEEE 802.11 : Defined network standards for physical components of wireless Lan  IEEE 802.11 : built in 1997 ATHENA
Wireless Lan  IEEE 802.11 has two modes: • Infrastructure mode • Adhoc mode ATHENA
Wireless Lan  Infrastructure mode: • Wireless Lan use Accesspoint • And computers with wireless Card are connected together through Access Point ATHENA
Wireless Lan Adhoc mode: • Devices which can connect together directly • Without Access point ATHENA
Wireless Lan IEEE 802.11b : •Wireless Lan –Speed: 1Mbps – 11Mbps –Frequency Band : 2,4 Ghz ISM Band(Insdustrial Scientific Medical Band) ATHENA
Wireless Lan  IEEE 802.11b Plus (IEEE 802.11b +) • Improved from IEEE 802.11 b • Frequence band : 2,4Ghz DSSS • Speed :22 Mbps ATHENA
Wireless Lan  IEEE 802.11 a: • Wireless Lan. – Speed : 6Mbps – 54 Mbps – Frequence band : 5Ghz or more ATHENA
Wireless Lan  IEEE 802.11a is : • Not compatible with 802.11b and 802.11b Plus ATHENA
Wireless Lan  IEEE 802.11g is : Wireless Lan – Speed : 1Mbps – 54 Mbps – Compatible with 802.11b and 802.11a ATHENA
Wireless Lan  Wireless : • 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) ATHENA
Wireless Lan  Components of Wireless • Wireless Access Point • Wireless LAN PCI Card • Wireless LAN PCMCIA Card/Carbus • Wireless Print Server ATHENA
Wireless Lan  Wireless Access Point • Similar Hub/Switch in Wireline • Connect clients use frequence band : 2,4Ghz 2,4835Ghz • Distance from access point to wireless client: depend on environment , devices, standard of network( IEEE 802.11a, IEEE 802.11b ….) ATHENA
Wireless LAN  Wireless Access Point ATHENA
Wireless Lan  Wireless LAN PCI Card • Net card for destop computer • PCI • Operate on many channels ATHENA
Wireless Lan Wireless LAN PCI card ATHENA