Cisco Systems CB21AG manual Ethernet 802.3 and wireless LAN 802.11 specifications, GL-4

Glossary

.

I

IEEE	Institute of Electrical and Electronics Engineers. A professional society serving electrical engineers
	through its publications, conferences, and standards development activities. The body responsible for
	the Ethernet 802.3 and wireless LAN 802.11 specifications.

infrastructure

infrastructure device

IP address

IP subnet mask

IPX

The wired Ethernet network.

A device (such as an access point, bridge, or base station) that connects client adapters to a wired LAN.

The Internet Protocol address of a station.

The number used to identify the IP subnetwork, indicating whether the IP address can be recognized on the LAN or if it must be reached through a gateway.

Internetwork Packet Exchange. The NetWare network layer protocol used for transferring data from servers to workstations.

L

LEAP	LEAP, or EAP-Cisco Wireless, is an 802.1X authentication type. With LEAP, a username and password
	are used by the client adapter to perform mutual authentication with the RADIUS server through an
	access point.

M

MAC address

MIC

modulation

multicast packets

multipath

The Media Access Control (MAC) address is a unique serial number assigned to a networking device by the manufacturer.

Message integrity check. MIC prevents bit-flip attacks on encrypted packets. During a bit-flip attack, an intruder intercepts an encrypted message, alters it slightly, and retransmits it, and the receiver accepts the retransmitted message as legitimate. The client adapter’s driver must support MIC functionality, and MIC must be enabled on the access point.

Any of several techniques for combining user information with a transmitter’s carrier signal.

Packets transmitted to multiple stations.

The echoes created as a radio signal bounces off of physical objects.

O

OFDM

overrun packets

Orthogonal frequency division multiplexing. A multicarrier modulation method for broadband wireless communications.

Packets that were discarded because the access point had a temporary overload of packets to handle.

Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Installation and Configuration Guide

GL-4 OL-4211-03