Presentation on theme: "CHAPTER Practical Ethernet Implementation. Chapter Objectives Provide a background on Ethernet itself and describe its characteristics Explain the practical."— Presentation transcript:
Chapter Objectives Provide a background on Ethernet itself and describe its characteristics Explain the practical implementation of various Ethernet LANs –10BaseT, 10Base2 and 10Base5 –Show sample networking devices and network connections Introduce the 100 Mbps Ethernet that is also known as fast Ethernet Discuss the various operating systems for Ethernet networks
Chapter Modules Background on Ethernet Ethernet Basic Characteristics Overview of Implementation IEEE Implementation of 10BaseT IEEE Implementation of 10Base2 IEEE Implementation of 10Base5 Fast (100 Mbps) Ethernet Networks Network Operating Systems for Ethernet Networks
Module Objectives Describe Ethernet in general Trace the origin of Ethernet Discuss the current status and speeds
Ethernet Defined A highly standardized popular network architecture Based on the CSMA/CD transmission protocol It is a logical bus network that is implemented both as a physical star and a physical bus network Governed by the IEEE 802.3 standard
Origin CSMA/CD originated in Univ. of Hawaii in the 60s Cabling and signaling schemes were invented at Xerox Subsequently standardized by a group of companies –Xerox, Intel and DEC
Current Status Highly standardized Standards set by IEEE 802 committee –IEEE 802.3 Standards exists for different speeds of Ethernet implementations
Current Speeds 10 Mbps Ethernet –Example: 10BaseT 100 Mbps Ethernet –Example: 100BaseTX 1 Gigabit Ethernet –New and evolving network technology 10 Gigabits Ethernet is currently emerging
100 Mbps IEEE 802 Implementations 100BaseTX –Twisted pair implementation 100BaseT4 –Uses two pairs of regular Cat 3 wires to transmit at 100M bps 100VG AnyLAN –Twisted pair implementation with variation to the 100BaseTX implementation The network of choice at present is –Gigabit Ethernet that is gradually replacing 100BaseTx networks
A Typical Star Ethernet LAN Configuration Client ServerClient NIC Hub RJ 45 Connection Twisted Pair Wire Cat 5e (1000baseT)
A Typical Bus Ethernet LAN Configuration Client ServerClient Thin coaxial cable (10base2) T-Connector Terminator NIC
Use of Repeaters for Length Extension Server Hub If the distance is greater than 328 feet, a repeater can be used to extend the distance. Repeater
Use of Fiber Line Drivers for Length Extension Server Switch If the distance is greater than 328 feet, a fiber-optic line driver can be used to extend the distance to several km. Fiber Driver
Implementation in a Building Hub Punch Down Client Server Wiring Rack (Wiring Closet) Switch Backbone UTP
Installation in a Building Wiring closet is a reserved space in the building for housing wiring hubs Wiring rack Hubs and switches UTP cables are run to the wall UTP connection is run from the wall to the desktop using a patch cable
Module Objectives Briefly outline the hardware needed to implement a 10Base2 network Discuss the 10base2 implementation rules such as those relating to maximum segment length, minimum distance between nodes etc.
10Base2 Implementation: Hardware Requirements 10Base2 NIC 10Base2 cable –Thin coaxial cable BNC T connectors BNC terminators BNC barrel connectors, if necessary –Usage must be kept to a minimum, if not avoided
5-4-3 Segmentation Rule To build larger networks, segments can be combined together based on the 5-4-3 rule 5 Segments –A 10Base2 LAN can consists of 5 segments 4 Repeaters –4 repeaters are used to form the 5 segments 3 segments with computers –3 of the segments can have stations attached
Extension of the 10Base2 LAN A combined effect of the 4 repeaters is to extend the overall length of the network Maximum length –3035 feet
Variations to the Rule In practice, variations to the rule exist for practicality Such implementations can therefore be considered as nonconforming with IEEE The implication –Interoperability with other conforming devices is not guaranteed –The functional features are the responsibility of the manufacturer of the nonconforming device
Module Objectives Give an overview of 10Base5 hardware Discuss the implementation rules Present a sample implementation for a building Include other relevant notes on 10Base5 implementation Present an example of 10Base2 and 10Base5 integration
Module Objectives 100 Mbps Ethernet variations 100BaseTX Characteristics A simple 100BaseTX implementation Media variations in implementing 100BaseX
100 Mbps Ethernet Variations 100VG-AnyLAN –Introduced by HP –Standardized by IEEE 802.12 group 100BaseTX –Also known as Fast Ethernet
100BaseTX A very popular implementation at present Still based on CSMA/CD Baseband technology Implementation is similar to 10BaseT Requires better UTP cable –Category 5 –Media variations are present
A Simple 100BaseTX Implementation Client Server Hub
Media Based Variations of 100BaseX 100BaseT4 –4-pair Category 3, 4 or 5 UTP 100BaseTX –2-pair Category 5 UTP or STP 100BaseFL –2-strand fiber-optic cable
Module Objectives Microsoft operating systems –Peer-to-peer –Client-server Unix operating system and variations of the same Other operating systems
Microsoft Peer-to-Peer –Windows Workgroup 3.11 –Windows 9x (95, 98 etc.) –Windows NT Workstation Client-Server –Windows NT Workstation for small LANs –Windows NT Server –Small Business Server A combination of NT Server, Exchange Server etc.
UNIX Many versions of Unix Examples –SCO Unix –Linux –AIX –etc.
Others Novel NetWare Banyan Vines AppleShare –For apples on an Ethernet network etc.