Cabletron Systems CSX200 CyberSWITCH Installation Manual page 83

Glossary
Integrated Services Digital Network. Digital transmission standard defining
ISDN —
communication protocols permitting telephone networks to carry data, voice, fax and other
streams.
Leased Line — A telecommunications line between two service points leased from a
communications carrier for private use, usually incurring a monthly service rate.
Type of indicator lights on the panel of a device.
LEDs (Light Emitting Diodes) —
A network connecting computers over a relatively small
Local Area Network (LAN) —
geographic area (usually within a single campus or building).
MAC Layer/Address — Media Access Control layer/address defined by the IEEE 802.3
specification which defines media access including framing and error detection. Part of the OSI
reference model Data Link layer.
An algorithm used by routers to determine the best path for transmitting packets to a
Metric —
remote destination based on considerations such as time, delay, cost, etc.
Modulator/Demodulator. A device that converts digital signals to/from analog signals
Modem —
for transmission over analog communications lines.
A protocol, defined in RFC 1717, that defines a way to perform inverse
Multi-Link Protocol —
multiplexing on the TCP/IP point-to-point protocol (PPP); i.e., the ability to use multiple serial
WAN channels for transferring one datastream. With MLP, a user can send and receive data over
both B channels in an ISDN basic-rate interface connection
NAT — Network Address Translation uses a unique IP address for a WAN interface. This IP
Address is negotiated through PPP or assigned statically by the Internet Service Provider (ISP).
NAT reduces the number of unique IP addresses for all clients using a particular WAN interface to
one.
A Network Operating System developed by Novell, Inc. providing shared access to
NetWare —
files and other network services.
Layer 3 of the OSI reference model that provides the protocol routing
Network Layer —
function.
Node — Refers to a termination point for communication links; entity that can access a network.
CSX200 Installation Guide D-3