Presentation is loading. Please wait.

Presentation is loading. Please wait.

Lesson 4 – UNDERSTANDING NETWORK CABLING. Network topologies Network cabling Installing and maintaining Network cabling Selecting and installing a SOHO.

Published by Modified over 9 years ago

Similar presentations

Presentation on theme: "Lesson 4 – UNDERSTANDING NETWORK CABLING. Network topologies Network cabling Installing and maintaining Network cabling Selecting and installing a SOHO."— Presentation transcript:

1 Lesson 4 – UNDERSTANDING NETWORK CABLING

2 Network topologies Network cabling Installing and maintaining Network cabling Selecting and installing a SOHO Network OVERVIEW

3 Network topology = Shape of the Network. It is the most important step in planning a Network. NETWORK TOPOLOGIES

4 Bus topology Star topology Ring topology Types of Network topologies

5 Common Bus Multipoint Topology. 1 cable from one end of the Network to the other. Devices are connected to the cable at different locations. Bus topology

6

7 Specifications: Number of nodes in a segment. Number of segments used through repeaters. Proximity of nodes to each other. Length of a segment. Coax cable required. Termination of bus ends. Bus topology

8 Networks use: Coaxial cable BNC T-connectors Bus topology

9 Advantages: Least expensive. Uses less material. Needs less installation labor. Bus topology

10 Drawbacks: Failure in a part of the segment causes the entire segment to fail. Troubleshooting can take a long time. Tends to be unreliable. Bus topology

11 10Base-2 Ethernet has: Better performance. Maximum speed of 10Mbps. RG-58/AU or RG-58/CU coaxial cable and BNC connectors. 50-ohm terminating connector. Maximum of 30 nodes per segment. Maximum segment length of 185 meters (607 feet). Extended segments through the use of repeaters. 1.5 feet distance between nodes. Bus topology

12 A central unit, called a hub or concentrator, hosts a set of network cables that radiate out to each node on the Network. Star topology

13

14 Uses either: 10Base-T Ethernet. 100Base-T Ethernet. Star topology

15 10Base-T Ethernet: Requires four wires (two twisted-pairs in a single sheath). Can be run on Cat 3 or Cat 5 cable. Is limited to a length of 100 meters. Is unlimited in the number of nodes in a segment. Uses RJ-45 connectors. Star topology

16 100Base-T Ethernet: Requires eight actual wires (four twisted-pairs in a single sheath). Uses Cat 5 cable or better. Is limited to a length of 100 meters. Is unlimited in the number of nodes in a segment. Uses RJ-45 connectors. Star topology

17 Star topology Networks cost more. In a Star topology, a single Network connection that goes bad affects only that connection. Star topology Vs. Bus topology

18 Rings are a logical arrangement. The cables are wired in a star, with each node connected on its own cable to the MAU. Electrically the Network behaves like a ring. It is based on Token Ring instead of Ethernet. Ring topology

19

20 Ethernet Networks manage signals through CSMA/CD (Carrier Sense Multiple Access/with Collision Detection). Token Ring Networks manage their bandwidth with “token passing”. Rings Vs. Stars and Bus:

21 Basic cable types: Unshielded twisted-pair (UTP) Shielded twisted-pair (STP) Coaxial Fiber-optic cable NETWORK CABLING

22 Unshielded twisted-pair

23 Similar to UTP, but has a braided metal shield surrounding the twisted pairs. The metal shield reduces the chance of interference from external electrical sources. Shielded twisted-pair

24 Coaxial cable

25 Uses a glass strand and carries data signals as light instead of electricity. This cable can easily reach 2 miles at 100Mbps. Fiber-optic cable

26 Twisted-pair cabling Network

27 An RJ-45 Connection

28 The RJ-45 jack on a hub is DCE (data communications equipment). The jack on a computer’s NIC is DTE (data terminal equipment). Twisted-pair cabling Network

29 Communication is not possible between DCE-DCE / DTE-DTE devices using twisted-pair/RJ-45 cable with the following wiring.

30 Twisted-pair cabling Network A crossover cable with the following wiring compensates for this shortcoming.

31 Twisted-pair cabling Network Twisted-pair performance designations.

32 Twisted-pair cabling Network Plenum Vs. Non-Plenum cable

33 Coaxial cable Most of the cable is the thin variety (RG-58), used with Thin Ethernet. Some may use the thicker cable (RG-8) for Thick Ethernet.

34 Coaxial cable Thin Ethernet cabling is: Wired in a bus arrangement. Uses BNC connectors.

35 Coaxial cable

36 INSTALLING AND MAINTAINING NETWORK CABLING Cable plant installation should include: Proper cable and connectors. Complete labeling of all parts. As-built drawing of cabling routes and locations. Certification report for installed cables. Education for bus-type Network users about the coaxial cable.

37 Choosing a cabling contractor How will the contractor document the cable plant? What are his/her documentation standards? Will s/he provide a set of as-built drawings? How does the contractor install the cable to avoid electrical interference sources in the ceiling and walls?

38 Does the contractor recommend a wiring solution that combines telecom wiring with data wiring? Has the contractor done any local installations that you can view? Does the contractor provide speedy post-installation support for new wiring drops? Choosing a cabling contractor

39 What equipment does the contractor use to certify the cable plant? What certification documentation will the contractor provide upon completion? Does the contractor also provide post-installation troubleshooting services? Choosing a cabling contractor

40 Typical problems: Abnormally slow network performance. Sporadic disconnections from the Network. Complete loss of Network connectivity. Troubleshooting coaxial cable systems is more difficult because the entire Network is down. Solving cabling problems

41 To track unobvious problems: Use a coaxial cable scanner. Get an extra terminator for the Network. Solving cabling problems

42 The following can be shared: Printers High-speed Internet connection Storage space Backup devices SELECTING AND INSTALLING A SOHO NETWORK

43 Standard Network hardware: A central hub Network Interface Card (NIC) Network cable Operating System Selecting a SOHO Network

44 Phone Line Networks Power Line Networks Wireless Networks Other home Networks

45 Network topologies: Bus Star Ring SUMMARY

46 Network cabling: Unshielded twisted-pair (UTP) Shielded twisted-pair (STP) Coaxial Fiber-optic cable Summary

47 Installing and maintaining Network cabling: Cable plant installation. Choosing a cable operator. Solving cabling problems. Summary

48 Selecting a SOHO Network: Advantages Standard Network hardware Other home Networks Summary

Download ppt "Lesson 4 – UNDERSTANDING NETWORK CABLING. Network topologies Network cabling Installing and maintaining Network cabling Selecting and installing a SOHO."

Similar presentations

1 Ethernet Wiring Qutaibah Malluhi CSE Department Qatar University.

1 Ethernet Wiring Qutaibah Malluhi CSE Department Qatar University.
Network Hardware and Physical Media

Network Hardware and Physical Media
Chapter 4 Computer Networks

Chapter 4 Computer Networks
Introduction to Network

Introduction to Network
Networks Terminology and Hardware. Network A network is a group of connected computers that can communicate with each other to share information and equipment,

Networks Terminology and Hardware. Network A network is a group of connected computers that can communicate with each other to share information and equipment,
CHAPTER Practical Ethernet Implementation. Chapter Objectives Provide a background on Ethernet itself and describe its characteristics Explain the practical.

CHAPTER Practical Ethernet Implementation. Chapter Objectives Provide a background on Ethernet itself and describe its characteristics Explain the practical.
Guide to Network Cabling Fundamentals

Guide to Network Cabling Fundamentals
CSCI 4550/8556 Computer Networks Comer, Chapter 10: LAN Wiring, Physical Topology, and Interface Hardware.

CSCI 4550/8556 Computer Networks Comer, Chapter 10: LAN Wiring, Physical Topology, and Interface Hardware.
Network Components and Equipment Organizational Communications and Technologies Prithvi N. Rao H. John Heinz III School of Public Policy and Management.

Network Components and Equipment Organizational Communications and Technologies Prithvi N. Rao H. John Heinz III School of Public Policy and Management.
Networks & telecommunications Part 2 July 2, 2012.

Networks & telecommunications Part 2 July 2, 2012.
1 LANs are Subnet Standards Only Physical and Data Link Layer standards Implemented by the NICs:NICs Application Transport Internet LAN Subnet (NIC) Application.

1 LANs are Subnet Standards Only Physical and Data Link Layer standards Implemented by the NICs:NICs Application Transport Internet LAN Subnet (NIC) Application.
Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved. McGraw-Hill Technology Education Copyright © 2006 by The McGraw-Hill Companies,

Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved. McGraw-Hill Technology Education Copyright © 2006 by The McGraw-Hill Companies,
1 Version 3.0 Module 3 Networking Media. 2 Version 3.0 Cable Specifications Cables have different specifications and expectations pertaining to performance:

1 Version 3.0 Module 3 Networking Media. 2 Version 3.0 Cable Specifications Cables have different specifications and expectations pertaining to performance:
Computer Networks & Security

Computer Networks & Security
1 LAN Topologies, Access methods (Week 1, Wednesday 1/10/2007) © Abdou Illia, Spring 2007.

1 LAN Topologies, Access methods (Week 1, Wednesday 1/10/2007) © Abdou Illia, Spring 2007.
Basic Networking Hardware. Agenda Basic LAN Definition Network Hardware Network Media Sample LAN Implementation.

Basic Networking Hardware. Agenda Basic LAN Definition Network Hardware Network Media Sample LAN Implementation.
Network Topologies. Point-to-Point Topology Point-to-point (PTP) topology connects two nodes directly together. The following examples are pure point.

Network Topologies. Point-to-Point Topology Point-to-point (PTP) topology connects two nodes directly together. The following examples are pure point.
Router. Switch Repeater Cable is the medium through which information usually moves from one network device to another. It used to connect one network.

Router. Switch Repeater Cable is the medium through which information usually moves from one network device to another. It used to connect one network.
Many Roads To Home. LAN Roads UTP STP Coaxial Fiber Optics.

Many Roads To Home. LAN Roads UTP STP Coaxial Fiber Optics.
Chapter 10 LAN Wiring, Physical Topology, and Interface Hardware Network Interface Card (fig 10.2)(fig 10.2) Ethernet wiring schemes – Thicknet – Thinnet.

Chapter 10 LAN Wiring, Physical Topology, and Interface Hardware Network Interface Card (fig 10.2)(fig 10.2) Ethernet wiring schemes – Thicknet – Thinnet.

Similar presentations

Ads by Google