Cisco AIR-AP1251AG-A-k9 Hardware Installation Manual page 134

Glossary
I
Institute of Electrical and Electronic Engineers. A professional society serving
IEEE
electrical engineers through its publications, conferences, and standards
development activities. The body responsible for the Ethernet 802.3 and wireless
LAN 802.11 specifications.
The wired Ethernet network.
infrastructure
The Internet Protocol (IP) address of a station.
IP Address
The number used to identify the IP subnetwork, indicating whether the IP
IP subnet mask
address can be recognized on the LAN or if it must be reached through a
gateway. This number is expressed in a form similar to an IP address; for
example: 255.255.255.0.
An antenna that radiates its signal in a spherical pattern.
isotropic
M
Media Access Control address. A unique 48-bit number used in Ethernet data
MAC
packets to identify an Ethernet device, such as an access point or your client
adapter.
Multiple basic SSID. Each multiple basic SSID is assigned a unique MAC
MBSSID
address. You use multiple BSSIDs to assign a unique DTIM setting for each
SSID and to broadcast SSIDs in beacons (one SSID per beacon).
Any of several techniques for combining user information with a transmitter's
modulation
carrier signal.
The echoes created as a radio signal bounces off of physical objects.
multipath
A single data message (packet) sent to multiple addresses.
multicast packet
O
This typically refers to a primarily circular antenna radiation pattern.
omni-directional
Orthogonal frequency division multiplex is a
OFDM
802.11a-compliant wireless LANs for transmission at 6, 9, 12, 18, 24, 36, 48,
and 54 Mbps.
P
A basic message unit for communication across a network. A packet usually includes routing
packet
information, data, and sometimes error detection information.
Cisco Aironet 1250 Series Access Point Hardware Installation Guide
GL-4
C I S C O C O N F I D E N T I A L - D r a f t A 1
modulation technique used by IEEE
OL-8247-02