Glossary - Proxim Tsunami MP-8100 Series Reference Manual

Glossary

Address Realm
Antenna Beamwidth
Antenna Gain
Application Level Gateway (ALG)
ARP
Authentication Method
Authentication
Secret"
Authentication Server Authentication
Port
Auto-Negotiation
Tsunami MP-8100 Reference Manual
An address realm is a network domain in which the network addresses are
uniquely assigned to entities such that datagrams can be routed to them.
Antenna beamwidth is the peak-to-peak angle overlaying the maximum
gain beam of the antenna at which its gain is reduced by 3 dB. Contrary to
popular belief, the 3 dB gain beam-width of an antenna does not
represent its interference beam-width, which is significantly wider. For
example, a typical 2-foot parabolic antenna at 5.8 GHz has 28 dBi of gain,
and a typical beam-width of 6 degrees. However, as an interference
source, it radiates with 25 dBi of gain over a 6 degree area, 10 dBi of gain
over a 32 degree area, and 2 dBi gain over a 170 degree area.
Antenna gain is the amount of increase in signal strength (in decibels) that
results from an antenna concentrating its radiated signal into a given
direction, when compared to the gain of a reference antenna. As antenna
gain increases in a given direction, its radiated "beam-width" becomes
narrower in one or more aspects.
An Application Level Gateway is an application-specific translation agent
that provides the required transparency for an application running on a
host in a private network to connect to its counterpart running on a host
in the public network. The NAT feature requires an ALG to support certain
applications.
The Address Resolution Protocol (ARP) is intended to find the MAC
address belonging to an IP address.
The process the unit uses to decide whether a station that wants to
register is allowed or not. IEEE 802.11 specifies two forms of
authentication: open system and shared key; WORP only supports shared
key because of security constraints.
Server "Shared This is a kind of password shared between the unit and the RADIUS
authentication server. This password is used to encrypt important data
exchanged between the unit and the RADIUS server.
This is a UDP port number (default is 1812), which is used to connect to
the authentication server for obtaining authentication information.
A signaling method that lets each node define its operational mode and
detect the operational mode of the adjacent node. Auto-negotiation can
be used in dual-function 10/100 Mbps Ethernet adapters. The process
happens out-of-band with no loss of network throughput.
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