Specifications

Glossary
GL-2
Cisco IOS Command Reference for Cisco Aironet Access Points and Bridges
0L-24115-01
ampdu
Aggregate MAC protocol unit. An A-MPDU is a structure containing multiple
MPDUs transported as a single PSDU by the PHY.
associated
A station is configured properly to allow it to wirelessly communicate with an
Access Point.
B
beacon
A wireless LAN packet that signals the availability and presence of the wireless
device.
BID
Bridge identifier used in spanning tree calculations. The BID contains the bridge
MAC address and its spanning tree priority value. If all bridges in the spanning
tree are assigned the same priority, the bridge with the lowest MAC address
becomes the spanning tree root.
BOOTP
Boot Protocol. A protocol used for the static assignment of IP addresses to
devices on the network.
BPDU
Bridge protocol data unit. When spanning tree is enabled, bridges send and
receive spanning-tree frames, called BPDUs, at regular intervals and use the
frames to maintain a loop-free network.
BPSK
A modulation technique used by IEEE 802.11b-compliant wireless LANs for
transmission at 1 Mbps.
broadcast packet
A single data message (packet) sent to all addresses on the same subnet.
C
CCK
Complementary code keying. A modulation technique used by IEEE
802.11b-compliant wireless LANs for transmission at 5.5 and 11 Mbps.
CCKM
Cisco Centralized Key Management. Using CCKM, authenticated client devices
can roam from one access point to another without any perceptible delay during
reassociation. An access point on your network acts as a subnet context manager
(SCM) and creates a cache of security credentials for CCKM-enabled client
devices on the subnet. The SCM’s cache of credentials dramatically reduces the
time required for reassociation when a CCKM-enabled client device roams to a
new access point.
cell
The area of radio range or coverage in which the wireless devices can
communicate with the base station. The size of the cell depends upon the speed
of the transmission, the type of antenna used, and the physical environment, as
well as other factors.