CISCO Capítulo 7

1. Glosario de Términos ocupados en el Capítulo:
RF ---> Radio Frequency
IR ---> Infrared
AP ---> Acces Point
IrDA --- Infrared Direct Access
ISM--- Industrial Scientific and Medical
WLAN ---> Wireless Local Area networks
WPAN --->Wireless Personal Area networks
WWAN ---> Wireless Wide Area networks
STA ---> STAtion
IBSS ---> Independent Basic Service Set
BSS --> Basic Service Set
ESS --> Extended Service Set
SSID --> Service Set Identifier
CSMA/CA --> Carrier Sense Multiple Access with Collision Avoidance
RTS --> Request to Send
CTS --> Clear to Send
ACK--> Acknowledgement
PSK --> pre-shared key
EAP --> Extensible Authentication Protocol
RADIUS --> Remote Authentication Dial-in User Service
WEP --> Wired Equivalency Protocol
WPA --> Wi-Fi Protected Access


2. Características de los diferentes estándares

802.11
The IEEE 802.11 standard governs the WLAN environment

802.11a
IEEE standard for wireless LANs that operates in 5 GHz band, uses 52-subcarrier orthogonal frequency division multiplexing with a maximum raw data rate of 54 Mbps
Uses 5 GHz RF spectrum
Not compatible with 2.4 GHz spectrum, i.e. 802.11 b/g/n devices
Range is approximately 33% that of the 802.11 b/g
Relatively expensive to implement compared to other technologies
Increasingly difficult to find 802.11a compliant equipment

802.11b
The first widely accepted wireless networking standard. Since it operates in the 2.4 GHz band, other devices that operate in the same band can cause interference.
First of the 2.4 GHz technologies
Maximum data-rate of 11 Mbps
Range of approximately 46 m (150 ft) indoors/96 m (300 ft) outdoors

802.11g
Applies to wireless LANs and provides up to 54 Mbps. Since it operates in the 2.4 GHz band, other devices that operate in the same band can cause interference.
2.4 GHz technologies
Maximum data-rate increase to 54 Mbps
Same range as the 802.11b
Backwards compatible with 802.11b

802.11n
Applies to wireless LANs and provides up to 54 Mbps in the 2.4 or 5 GHz band.
Newest standard in development

Funciones o Características de los diferentes dispositivos que componene una red inalámbrica

STA: computadora conectada a una red inalambrica
Antena: dispositivo de captacion de una red inalambrica
Punto de Acceso: punto en que confluyen una red alambrica y elementos inalambricos
Bridge: dispositivo que une dos redes inalambricas por medio de ondas electromagneticas.

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7.2.3.4

7.2.4.3


7.3.4.3

7.4.3.2




7.4.4.2