Avaya Configuring Line Services Bedienungsanleitung Seite 25

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1-1
Chapter 1
Overview of Line Protocols
When you add a network interface to a Bay Networks router, you must specify the
type of LAN or WAN circuit or
line
to which the interface will connect. This
chapter provides background information on LAN and WAN circuits you can
specify.
LAN Protocols
This section provides background information about the following LAN
protocols:
Ethernet
Token Ring
FDDI
Ethernet Overview
Ethernet is a 10-megabit/second (Mb/s) or 100-Mb/s LAN that uses the Carrier
Sense Multiple Access with Collision Detection (CSMA/CD) protocol to control
access to the physical wiring (
medium
).
Ethernet Topologies
Thick and thin Ethernet LANs use a bus topology, in which devices connect
directly to the backbone (F
igure 1-1) at both the physical and logical levels.
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