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Cisco Aironet 1552 Series for Hazardous Locations Installation Guide
D
DFS
Dynamic Frequency Selection. In some regulatory domains, 5 GHz radios are
required to use DFS to avoid interfering with radar signals.
DHCP
Dynamic host configuration protocol. A protocol available with many operating
systems that automatically issues IP addresses within a specified range to
devices on the network. The device retains the assigned address for a specific
administrator-defined period.
DNS
Domain Name System server. A server that translates text names into IP
addresses. The server maintains a database of host alphanumeric names and their
corresponding IP addresses.
DSSS
Direct sequence spread spectrum. A type of spread spectrum radio transmission
that spreads its signal continuously over a wide frequency band.
E
EAP
Extensible Authentication Protocol. An optional IEEE 802.1x security feature
ideal for organizations with a large user base and access to an EAP-enabled
Remote Authentication Dial-In User Service (RADIUS) server.
I
infrastructure
The wired Ethernet network.
isotropic
An antenna that radiates its signal in a spherical pattern.
M
MAP
Mesh Access Point
MBSSID
Multiple basic SSID. Each multiple basic SSID is assigned a unique MAC
address. You use multiple BSSIDs to assign a unique DTIM setting for each
SSID and to broadcast SSIDs in beacons (one SSID per beacon).
MIMO
Multiple Input/Multiple Output
multipath
The echoes created as a radio signal bounces off of physical objects.
multicast packet
A single data message (packet) sent to multiple addresses.
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