chapter 5 ethernet advanced

8/10/2019 Chapter 5 Ethernet Advanced

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Ethernet Advanced

Chapter 5


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Chapter 5 2

Chapter Objectives

Explain 10Base-T network

Explain 10Base-FL

Explain the 5-4-3 rule

Identify different types of High Speed Ethernet

standards


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Chapter 5 3

Recall

IEEE 802 standard is used for networking

802.3 defines physical layer and datalink layer

standard that uses wired connection

10Base-5, 10Base-2, 10Base-T and 10Base-F arethe types of Ethernet cabling system

Hubs, bridges and routers are used to extend

network


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Chapter 5 4

Introduction to Advanced Ethernet

Ethernet is most widely used network technology

Introduced by IEEE 802.3

Ethernet systems are 10Base-T and 10Base-FL

High speed Ethernet includes

100Base Ethernet

Gigabit Ethernet

Switched Ethernet Full Duplex Ethernet


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Chapter 5 5

Features of Advanced Ethernet

Advanced Ethernet would use a physical star to

match the robustness of Token ring

It would not use more expensive coaxial cables and

adopt inexpensive UTP cabling It would use the same frame types and speeds of

the older Ethernets so that new Ethernets will be

compatible with older ones


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Chapter 5 6

10BASE-T - I

Ethernet standard known as twisted pair Ethernet

Uses a star bus topology

Stations are connected to a hub using pairs of

twisted cables

Features:

Failure of one system does not affect entire network

Easy troubleshooting

Addition and removal of device does not affect

network


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Chapter 5 7

10BASE-T Topology

It uses a physical star topology in which each nodeconnects to a central hub

The hub is a multiport repeater. It receives the signalfrom one port, regenerates it and passes the signal to all

the other ports


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Chapter 5 8

Meaning of 10BASE-T

10 refer to 10 Mbps transmission speed, Base is for

baseband signaling and T stands for twisted pair

cable


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Chapter 5 9

10Base T Specifications and Limitations

Specifications include:

Fault Tolerant

Easy Troubleshooting

Easy Moves and Changes Limitations include:

Distance

Sensitive to noise

Number of computers connected


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Chapter 5 10

10BASE-FL

Ethernet standard that operates over fiber optic cable and

covers a distance up to 2 k.m.

Multimode fiber and Straight Tip (ST) connector are used

to build 10Base-FL segment

10Base FLcomponents

Network MediumMedium Attachment

Unit (MAU)


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Chapter 5 12

5-4-3 Rule - II

Categories of physical segments:

User segments used to connect the systems in the

network. These segments are also known as

populated segments.

Link segments used to connect repeaters in the

network. These segments are also known as

unpopulated segments.


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Chapter 5 13

Network using 5-4-3 rule

5Specifies that maximum 5 segments can be used in

the network 4Specifies the number of repeaters/concentrators

used to connect the network segments

3Specifies the number of populated segments


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Chapter 5 14

High Speed Ethernet

Developed to increase connectivity speed betweenthe terminals or computers in a network.

EthernetStandards

Fast Ethernet

(100Base Ethernet)Gigabit Ethernet 10-Gigabit Ethernet


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Chapter 5 15

100Base Ethernet

Supports data transfer rate up to 100 Mbps

Also called as Fast Ethernet

Makes use of CAT 5 cable and fiber cable


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Chapter 5 16

Advantages and Disadvantages

Advantages

SpeedTen times faster than regular 10Base-Tnetwork

ThroughputFaster for video, multimedia,graphics, Internet surfing and other applications thatrequire high speed

Disadvantages

Mode of data transfer100Base-T4 Ethernetcannot support full duplex mode of data transfer

Wiring100Base-T4 requires four pair of wiring fordata transfer


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Chapter 5 17

GigabitEthernet

Supports data transfer rate up to 1000 Mbit/s

Also called as 1000BASE-T Ethernet

Gigabit

Ethernet

Standards

1000Base-SX 1000Base-LX 1000Base-CX 1000Base-T 1000Base-TX


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Chapter 5 20

SwitchedEthernet

Employs a switch instead of a repeater or anEthernet hub to connect individual hosts or

segments

Uses three types of switching:

Cut-through

Store and forward

Fragment-free


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Chapter 5 21

Basic Structure of Switched Ethernet


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Chapter 5 22

Full-DuplexEthernet

Devices at both ends can send and receive data atthe same time

Provides twice the bandwidth of normal (half duplex)

Ethernet

Each pairs of wires acts as a separate channel and

allows the devices at each end to communicate with

one another in full duplex mode


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Chapter 5 24

Problem

Identifying problem related to cabling and crimping of

RJ-45 jack for new CAT6 cables.


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Chapter 5 25

Suggested Solution

Check the crimping of RJ-45 connector and configurethe NIC to operate in 100 Base full duplex mode.


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Chapter 5 26

Summary - I

The Standard Ethernet implementations are10Base-T and 10Base-F

10Base-T is also known as twisted pair Ethernet anduses UTP cables

10Base-T uses star topology and hub is used asnetworking device

10Base-FL is a version of 10Base-F that uses fiberoptic link instead of twisted pair cable


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Chapter 5 27

Summary - II

IEEE 802.3 implements 5-4-3 rule to limit the size of

an Ethernet collision domain

High speed Ethernet was developed to increase the

connectivity speed between computers in a network The various high speed Ethernet standards are Fast

Ethernet, Gigabit Ethernet and 10Gigabit Ethernet

100Base-T is also referred as Fast Ethernet that

supports data transfer rate up to 100Mbps


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Chapter 5 28

Summary - II

Gigabit Ethernet supports data transfer rate up to1000Mbps

10Gigabit Ethernet supports data transfer rate up to10 times that of Gigabit Ethernet

Switched Ethernet implements of three types ofswitching Cut-through switches, Store and forwardswitches and fragment free switches

A Full Duplex Ethernet provides twice the bandwidthof normal (half duplex) Ethernet

chapter 5 ethernet advanced

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