User guide

Glossary-3
Glossary
Orthogonal Frequency Division Multiplexing (ODFM)
OFDM allows multiple users to transmit in an allocated band by dividing the
bandwidth into many narrow bandwidth carriers.
Repeater and Bridge
Repeater and bridge can provide an extended link to a remote access point from the
wired LAN. Access Point working in this mode could connect to another AP in
Access Point mode or Repeater and Bridge mode. Whenever there are two APs
having wireless link together (one in Access Point or Repeater and Bridge mode,
another using Repeater and Bridge mode), and also have wired link separately,
these two APs are also working as “bridging” for the two wired links.
Service Set Identifier (SSID)
An identifier that is attached to packets sent over the wireless LAN and functions as
a password for joining a particular radio cell; i.e., Basic Service Set (BSS).
Session Key
Session keys are unique to each client, and are used to authenticate a client
connection, and correlate traffic passing between a specific client and the access
point.
Shared Key
A shared key can be used to authenticate each client attached to a wireless network.
Shared Key authentication must be used along with the 802.11 Wireless Equivalent
Privacy algorithm.
Simple Network Time Protocol (SNTP)
SNTP allows a device to set its internal clock based on periodic updates from a
Network Time Protocol (NTP) server. Updates can be requested from a specific NTP
server, or can be received via broadcasts sent by NTP servers.
Temporal Key Integrity Protocol (TKIP)
A data encryption method designed as a replacement for WEP. TKIP avoids the
problems of WEP static keys by dynamically changing data encryption keys.
Trivial File Transfer Protocol (TFTP)
A TCP/IP protocol commonly used for software downloads.
Virtual Access Point (VAP)
Virtual AP technology multiplies the number of Access Points present within the RF
footprint of a single physical access device. With Virtual AP technology, WLAN users
within the device’s footprint can associate with what appears to be different access
points and their associated network services. All the services are delivered using a