Avaya Configuring Ethernet, FDDI, and Token Ring Services Uživatelský manuál stáhnout pdf (Strana 19)

117344-A Rev. A

1-1

Chapter 1

Getting Started

About Line Services

Ethernet, FDDI, and token ring services comprise the physical and data link layer

(

line

) services for conﬁgured LAN circuits on a Bay Networks router. This

chapter shows you how to access the those services on a Bay Networks router.

This guide assumes that the router’s conﬁguration ﬁle includes Ethernet, FDDI, or

token ring network circuits. See

Conﬁguring and Managing Routers with Site

Manager

for information on adding circuits.

Topic Page

About Line Ser

vices 1-1

Accessing Line Services 1-2

Customizing Line Services 1-5

Note:

In the OSI internetworking model, the

physical layer

manages the

transmission of bits across the physical media (for example, cable or modem

interface); the physical layer protocol deﬁnes the electrical and mechanical

interface. The

data link layer

deﬁnes the procedures for transferring data

accurately and reliably across the physical layer.

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Avaya Configuring Ethernet, FDDI, and Token Ring Services Uživatelský manuál Strana 19