Avaya Configuring Ethernet, FDDI, and Token Ring Services Manual do Utilizador descarregar pdf (Página 19)

117020-A Rev. A

1-1

Chapter 1

Getting Started

This chapter describes how to access the physical and data link layer (

line

)

services for conﬁgured LAN circuits on a Bay Networks router.

What’s the Default Conﬁguration?

Router software automatically sets default values for line service parameters when

you add an Ethernet, FDDI, or token ring circuit.

Line defaults are suitable for many networks; however, you can use the

Conﬁguration Manager to customize the default settings based on your network

composition and requirements.

See Appendix B for a list of the default Ethernet, FDDI, and token ring line

service parameter values.

Note:

In the OSI internetworking model, the

physical layer

manages the

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

interface); a 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 Manual do Utilizador Página 19