Cisco CISCO1401 Software Guide - Page 274
Cisco Centralized Key Management. Using CCKM, authenticated client devices
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Glossary BPSK broadcast packet A modulation technique used by IEEE 802.11b-compliant wireless LANs for transmission at 1 Mbps. A single data message (packet) sent to all addresses on the same subnet. C CCK CCKM cell client CSMA Complementary code keying. A modulation technique used by IEEE 802.11b-compliant wireless LANs for transmission at 5.5 and 11 Mbps. 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. 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. A radio device that uses the services of an access point to communicate wirelessly with other devices on a local area network. Carrier sense multiple access. A wireless LAN media access method specified by the IEEE 802.11 specification. D data rates dBi DHCP dipole domain name The range of data transmission rates supported by a device. Data rates are measured in megabits per second (Mbps). A ratio of decibels to an isotropic antenna that is commonly used to measure antenna gain. The greater the dBi value, the higher the gain, and the more acute the angle of coverage. 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. A type of low-gain (2.2-dBi) antenna consisting of two (often internal) elements. The text name that refers to a grouping of networks or network resources based on organization-type or geography; for example: name.com-commercial; name.edu-educational; name.gov-government; ISPname.net-network provider (such as an ISP); name.ar-Argentina; name.au-Australia; and so on. GL-2 Cisco Aironet 1400 Series Wireless Bridges Software Configuration Guide OL-4059-01
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