Wired LANs Ethernet

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Wired LANs Ethernet

Standard Ethernet

Attachment Unit Interface

Medium-Dependent Interface

Medium Attachment Unit

Physical Layer Signaling

Access Method -uses 1 persistent CSMA/CD

iEEE Standards

1985, Project 802

Enable intercommunication among equipment from many manufacturers

Data Link Layer

Logical Link Control

flow control, error control and part of the framing duties

Media Access Control(MAC)

Operation of CSMA/CD method and framing

Gigabit Ethernet

1000Base-T

1000Base-CX

1000Base-LX

1000Base-SX

Medium-Dependent Interface (MDI)

PHY Sublayer

Gigabit Medium Independent Interface (GMII)

Reconciliation Sublayer (RS)

Two approached medium access

full-duplex without CSMA/CD

half-duplex using CSMA/CD

Fast Ethernet

100Base-T4

100Base-FX

100Base-TX

uses star topology

autonegotiation, negotiate the mode or data rate of operation

half duplex with SCMA/CD

compete with other LAN protocols

Fiber Channel

FDDI

Ten-Gigabit Ethernet

MAC Sublayer

operates only in full duplex mode

Physical Layer

Implementation

10GBase-E -long-wave 1500nm single mode

10GBase-L -long-wave 1310nm single mode

10GBase-S -short-wave 850nm multimode

designed for using fiber-optic cable over long distance