Glossary Of Terms - Nomadix Universal subscriber gateway User Manual

U S
NIVERSAL UBSCRIBER

Glossary of Terms

802.1Q
An IEEE standard for providing a virtual LAN capability within a campus network. 802.1Q establishes a
standard format for frame tagging (Layer 2 VLAN markings), enabling the creation of VLANs that use
equipment from multiple vendors.
10/100 Ethernet
See Ethernet.
AAA
(Authentication, Authorization, and Accounting) A combination of commands used by the USG to
authenticate, authorize, and subsequently bill subscribers for their use of the customer's network. When a
subscriber logs into the system, their unique MAC address is placed into an authorization table. The system
then authenticates the subscriber's MAC address and billing information before allowing them to access
the Internet and make online purchases. See also,
Access Concentrator
A type of multiplexor that combines multiple channels onto a single transmission medium in such a way
that all the individual channels can be simultaneously active. For example, ISPs use concentrators to
combine their dial-up modem connections onto faster T-1 lines that connect to the Internet. Concentrators
are also used in Local Area Networks (LANs) to combine transmissions from a cluster of nodes. In this
case, the concentrator is often called a hub.
Access Router
A router at a customer site, which connects to the network service provider. Also known as a Customer
Premises Equipment (CPE) router. See also, Router.
ACK
(ACKnowledgment) If all the transmitted data is present and correct, the receiving device sends an ACK
signal, which acts as a request for the next data packet.
Adaptive Configuration Technology
A Nomadix, Inc. patented technology that enables Dynamic Address Translation. See also, DAT.
ADSL
(Asynchronous Digital Subscriber Line) A method for moving data at high speed over regular phone lines.
ARP
(Address Resolution Protocol) Used to dynamically bind a high level IP address to a low level physical
hardware address. ARP is limited to a single physical network that supports hardware broadcasting.
ATM
(Asynchronous Transfer Mode) A network technology based on transferring data in "cells" or packets of a
fixed size (53 bytes each). The cell used with ATM is relatively small compared to units used with older
technologies. The small, constant cell size allows ATM equipment to transmit video, audio, and computer
data over the same network, and assures that no single type of data monopolizes the line. ATM can offer
multi-gigabit bandwidth. See also,
Glossary of Terms
G ™
ATEWAY
MAC Address.
Bandwidth and Packet.
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