User's Manual

C1_Configuration_Manual_-_fm_1.0.0.1.doc

Commercially Confidential

7 G

LOSSARY

802.1q IEEE 802.1Q was a project in the IEEE 802 standards process to develop a mechanism

to allow multiple bridged networks to transparently share the same physical network link

without leakage of information between networks (i.e. trunking). IEEE 802.1Q is also the

name of the standard issued by this process, and in common usage the name of the encapsulation

protocol used to implement this mechanism over Ethernet networks. This protocol allows for

individual VLANs to communicate with one another with the use of a layer-3 (network) router.

802.11 802.11 refers to a family of specifications developed by the IEEE for wireless LAN

technology. 802.11 specifies an over-the-air interface between a wireless client and a base

station or between two wireless clients. The IEEE accepted the specification in 1997.

802.11a An extension to 802.11 that applies to wireless LANs and provides up to 54 Mbps in

the 5GHz band. 802.11a uses an Orthogonal Frequency Division Multiplexing (OFDM)

encoding scheme rather than Frequency Hopping Spread Spectrum (FHSS) or Direct Sequence

Spread Spectrum.

802.11b Also referred to as 802.11 High Rate or Wi-Fi. It is an extension to 802.11 that

applies to wireless LANS and provides 11 Mbps transmission (with a fallback to 5.5, 2 and 1

Mbps) in the 2.4 GHz band. 802.11b uses only DSSS. 802.11b was a 1999 ratification to the

original 802.11 standard, allowing wireless functionality comparable to Ethernet.

802.11e A supplement to the IEEE 802.11 wireless LAN (WLAN) specification for

enhancements to the 802.11 Medium Access Control (MAC) to improve and manage Quality of

Service (QoS), provide Classes of Service (CoS), and enhanced security and authentication

mechanisms.

802.11g The 802.11g specification is a standard for Wireless Local Area Networks (WLANs)

that offers transmission over relatively short distances at up to 54 megabits per second (Mbps),

compared with the 11 Mbps theoretical maximum with the earlier 802.11b standard. Networks

employing 802.11g operate at radio frequencies between 2.400 GHz and 2.4835 GHz, the same

band as 802.11b. But the 802.11g specification employs Orthogonal Frequency Division

Multiplexing (OFDM), the modulation scheme used in 802.11a, to obtain higher data speed.

Computers or terminals set up for 802.11g can fall back to speeds of 11 Mbps. This feature

makes 802.11b and 802.11g devices compatible within a single network. Modification of an

802.11b access point to 802.11g compliance usually involves only a firmware upgrade.

802.11i A supplement to the IEEE 802.11 wireless LAN (WLAN) specification for enhanced

security through the use of stronger encryption protocols such as the Temporal Key Integrity

Protocol (TKIP) and AES Counter-Mode Cipher Block Chaining Message Authentication Code

Protocol (AES-CCMP). These protocols provide replay protection, cryptographically keyed

integrity checks, and key derivation based on the IEEE 802.1X port authentication standard.

ACL Access Control List: It is a table that tells a computer operating system which access

rights each user has to a particular system object, such as a file directory or individual file.

ad-hoc mode An 802.11 networking framework in which devices or stations communicate

directly with each other, without the use of an Access Point (AP). Ad-hoc mode is also

referred to as peer-to-peer mode or an Independent Basic Service Set (IBSS). Ad-hoc mode is

useful for establishing a network where wireless infrastructure does not exist or where services

are not required.