User guide

HiPath Wireless Standalone 802.11n AP User Guide D-15
TSN Transition Security Network. A subset of Robust Security Network
(RSN), which provides an enhanced security solution for legacy
hardware. The Wi-Fi Alliance has adopted a solution called
Wireless Protected Access (WPA), based on TSN. RSN and TSN
both specify IEEE 802.1x authentication with Extensible
Authentication Protocol (EAP).
Tunnelling Tunnelling (or encapsulation) is a technology that enables one
network to send its data via another network's connections.
Tunnelling works by encapsulating packets of a network protocol
within packets carried by the second network. The receiving
device then decapsulates the packets and forwards them in their
original format.
UDP User Datagram Protocol. A connectionless protocol that, like TCP,
runs on top of IP networks. Unlike TCP/IP, UDP/IP provides very
few error recovery services, offering instead a direct way to send
and receive packets over an IP network. It is used primarily for
broadcasting messages over a network.
U-NII Unlicensed National Information Infrastructure. Designated to
provide short-range, high-speed wireless networking
communication at low cost, U-NII consists of three frequency
bands of 100 MHz each in the 5 GHz band: 5.15-5.25GHz (for
indoor use only), 5.25-5.35 GHz and 5.725-5.825GHz. The three
frequency bands were set aside by the FCC in 1997 initially to
help schools connect to the Internet without the need for hard
wiring. U-NII devices do not require licensing.
URL Uniform Resource Locator. the unique global address of
resources or files on the World Wide Web. The URL contains the
name of the protocol to be used to access the file resource, the IP
address or the domain name of the computer where the resource
is located, and a pathname -- a hierarchical description that
specifies the location of a file in that computer.
VLAN Virtual Local Area Network. A network of computers that behave
as if they are connected to the same wire when they may be
physically located on different segments of a LAN. VLANs are
configured through software rather than hardware, which makes
them extremely flexible. When a computer is physically moved to
another location, it can stay on the same VLAN without any
hardware reconfiguration.
The standard is defined in IEEE 802.1Q - Virtual LANs, which
states that 'IEEE 802 Local Area Networks (LANs) of all types may
be connected together with Media Access Control (MAC) Bridges,
as specified in ISO/IEC 15802-3. This standard defines the
operation of Virtual LAN (VLAN) Bridges that permit the definition,
operation and administration of Virtual LAN topologies within a
Bridged LAN infrastructure."
VNS Virtual Network Services (VNS). A Enterasys specific technique
that provides a means of mapping wireless networks to a wired
topology.
VoIP Voice Over Internet Protocol. An internet telephony technique.
With VoIP, a voice transmission is cut into multiple packets, takes
the most efficient path along the Internet and is reassembled when
it reaches the destination.
Term Definition