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274 AT-TQ2403 - Management Software - User's Guide
Glossary
0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
0-9
802
IE
EE 802 (IEEE Std. 802-2001)
is a family of standards for peer-to-peer communication over a LAN.
These technologies use a shared-medium, with information broadcast for all stations to receive. The
basic communications capabilities provided are packet-based. The basic unit of transmission is a
sequence of data octets (8-bits), which can be of any length within a range that is dependent on the type
of LAN.
Included in the 802 family of IEEE standards are definitions of bridging, management, and security
protocols.
802.1x
IEEE 802.1x (IEEE Std. 802.1x-2001)
is a standard for passing EAP packets over an 802.11 wireless
network using a protocol called EAP Encapsulation Over LANs (EAPOL). It establishes a framework that
supports multiple authentication methods.
IEEE 802.1x authenticates users not machines.
802.2
IEEE 802.2 (IEEE Std. 802.2.1998)
defines the LLC layer for the 802 family of standards.
802.3
IEEE 802.3 (IEEE Std. 802.3-2002)
defines the MAC layer for networks that use CSMA/CA. Ethernet is an
example of such a network.
802.11
IEEE 802.11 (IEEE Std. 802.11-1999)
is a medium access control (MAC) and physical layer (PHY)
specification for wireless connectivity for fixed, portable, and moving stations within a local area. It uses
direct sequence spread spectrum (DSSS) in the 2.4 GHz ISM band and supports raw data rates of 1 and
2 Mbps. It was formally adopted in 1997 but has been mostly superseded by 802.11b.
IEEE 802.11 is also used generically to refer to the family of IEEE standards for wireless local area
networks.
802.11a
IEEE 802.11a (IEEE Std. 802.11a-1999)
is a PHY standard that specifies operating in the 5 GHz U-NII band
using orthogonal frequency division multiplexing (OFDM). It supports data rates ranging from 6 to 54
Mbps.