Overview

Network Maintenance and Troubleshooting Guide Field-Tested Solutions for Everyday Problems, Second Edition Neal Allen   The 100% practical, real-world guide to anticipating, finding, and solving network problems—fast!   Real-life networks don’t always behave “by the book.” Troubleshooting them requires practical intuition that normally comes only with experience. In this book, Fluke Networks’ Neal Allen brings together all that hard-won, hands-on insight: everything you need to discover what’s really happening in your network, so you can anticipate and fix problems before users even notice them.   Writing for network technicians and administrators at all levels, Allen presents an approach to troubleshooting that has been proven in networks of all kinds, no matter how complex. He introduces indispensable triage and troubleshooting techniques for everything from copper and fiber cabling to IPv6, and presents unparalleled guidance on identifying and resolving problems at the MAC Layer. He illustrates his advice with diagrams, tables, and screen captures from Fluke Networks’ market-leading instruments. Throughout this book, Allen also offers practical summaries of each of today’s core networking technologies, making it an ideal complement to any network certification study guide.   Coverage includes Using the OSI model to more efficiently troubleshoot networks layer by layer Copper and fiber-optic cabling: theory, operation, and troubleshooting Media Access Control (MAC) Layer: Ethernet theory and operation Identifying and resolving problems related to IPv4 and IPv6 protocols Preventing problems before they occur Discovering device behavior Troubleshooting switches Using a protocol analyzer more successfully Creating network documentation that helps you more efficiently prevent and resolve problems   Road tested by thousands of Fluke Networks customers, this book’s first edition became the best-kept secret resource for sysadmins, netadmins, and support technicians fortunate enough to discover it. Now, Allen has thoroughly updated his classic for today’s networks. If you’re responsible for maintaining one of those networks, you’ll find this new Second Edition even more indispensable.   Neal Allen is a senior staff engineer in the Fluke Networks’ Technical Assistance Center (TAC) focusing on escalated problems. He has been involved in designing, installing, and troubleshooting networks for nearly 20 years. Allen has served on Interop’s trade show Network Operations Center (NOC) team since 1993, troubleshooting show-floor problems at the Las Vegas and Atlanta Interop trade shows, and helped support and troubleshoot the network for the 1996 Atlanta Olympic Games. His responsibilities currently include product feature specification and beta testing, remote and onsite problem solving, and providing training and sales support worldwide.   informit.com/aw Cover design by Louisa Adair Cover photography from Image Source / Getty Images

Full Product Details

Author:   Neal Allen
Publisher:   Pearson Education (US)
Imprint:   Addison-Wesley Educational Publishers Inc
Edition:   2nd edition
Dimensions:   Width: 18.90cm , Height: 3.20cm , Length: 22.60cm
Weight:   0.948kg
ISBN:  

9780321647412

ISBN 10:   0321647416
Pages:   576
Publication Date:   29 October 2009
Audience:   Professional and scholarly ,  Professional & Vocational
Format:   Paperback
Publisher's Status:   Out of Print
Availability:   In Print  
Limited stock is available. It will be ordered for you and shipped pending supplier's limited stock.

Table of Contents

Introduction Chapter 1: Using the OSI Model Quick Tour of the OSI Model Seven Layers of the OSI Model     Layer 7: Application Layer     Layer 6: Presentation Layer     Layer 5: Session Layer     Layer 4: Transport Layer     Layer 3: Network Layer     Layer 2: Data Link Layer     Layer 1: Physical Layer Networking Devices and the OSI Model     Repeaters     Bridges     Routers     Switches     Switch Forwarding Techniques Common Networking Tools     Network Management Tools     Protocol Analyzers     Handheld Network Analyzers     Cable Testers     Flow Protocols Summary Chapter Review Questions Chapter 2: Copper Media Standards Basic Cable Uses Test Parameters     Basic Tests and Parameters Required for In-Channel Testing     Basic Frequency-Based Test Parameters Related to In-Channel Testing     Advanced Frequency-Based Test Parameters Related to In-Channel and External Testing     Other Commonly Referenced Test Parameters     Test Configurations What Should Be Tested? Grounding and Shielding Cable Summary Chapter Review Questions Chapter 3: Fiber Optic Media Safety     Light     Glass Standards Fiber Optic Cable Design     Fiber Cable Construction     Cable Construction     Connector Types Test Parameters     Field Testing Parameters Light Behavior     Dispersion     Modal Bandwidth     Critical Angle     Bending Fiber     Graded Index     Light Sources     Launch Conditions     Mandrels     Mode Conditioning     Absorption     Fresnel Reflections     Fiber Termination Polish     Fiber Alignment Errors and Manufacturing Flaws Testing Practices and Tools     Test Methods     Tools Levels of Testing     Tier 1     Tier 2     Precautions for Measurement and Testing Summary Chapter Review Questions Chapter 4: Media Access Control Layer Ethernet and the OSI Model Frame Structure     Bits to Bytes     Bytes to Field Groupings     Basic Ethernet Frame Fields Theory of Operation     Interpacket Spacing     Retransmission     Error Handling     Duplex     Frame Bursting     Auto-Negotiation     Power over Ethernet (PoE)     Ethernet Implementation Details     10 Mbps Versions of Ethernet     100Mbps Versions of Ethernet     1000Mbps Versions of Ethernet     10Gbps Versions of Ethernet     10GBASE-T Receive Process     Ethernet for Subscriber Access Networks Summary Chapter Review Questions Chapter 5: Data Link Layer Bridges     Bridge Forwarding Table     Effect of Forwarding     Priority     Spanning Tree Protocol     VLANs MAC Control Sublayer     Frame Structure     Slow Protocols     Link Aggregation Sublayer     Operations, Administration, and Maintenance (OAM) Sublayer Logical Link Control Sublayer     802.2 LLC     802.2 LLC Field Definitions     802 SNAP     802 SNAP Field Definitions Novell Raw Summary Chapter Review Questions Chapter 6: Network Layer Routers     OSI Model Implications: Effect of Forwarding Internet Protocol (IP)     IPv4 Addressing     Internet Control Message Protocol (ICMP)     IPv6 Addressing     ICMPv6 Summary Chapter Review Questions Chapter 7: Transport Layer TCP and UDP Ports Transmission Control Protocol (TCP)     TCP Segments and Maximum Segment Size (MSS)     TCP Sockets and Connections     Opening and Closing Connections     Sequence and Acknowledgment Numbers     Retransmission     Selective Acknowledgment (SACK)     Window Size, Window Scaling, and Sliding Window     Congestion Control     TCP Segment Structure User Datagram Protocol (UDP)     User Datagram Protocol (UDP) Datagram Structure Summary Chapter Review Questions Chapter 8: Preventing Problems Strategy for Network Maintenance     1. Management Involvement in Network Decision Making     2. Preparation and Planning     3. Problem Prevention     4. Early Problem Detection     5. Quick Problem Isolation and Resolution     6. Investing More in Tools and Training Rather Than Additional Staff to Accommodate Network Growth     7. Quality Improvement Approach to Network Management and Maintenance Documentation     Methodology     Discovery and Baselining     Design Assistance     Validation     Create a Server Log and Software Library     Create a Network Diagram     Cable Plant Documentation Develop a Baseline     Traffic Monitoring Proactive Activity and Preparedness     Monitoring the Physical and MAC Layers     Monitoring the Network Layer     Monitoring the Transport Layer     Application Monitoring Summary Chapter Review Questions Chapter 9: Troubleshooting Best Method Process Eight Key Steps to Successful Troubleshooting     Step 1. Identify the Exact Issue     Step 3. Localize and Isolate the Cause     Step 4. Formulate a Plan for Solving the Problem     Step 5. Implement the Plan     Step 6. Test to Verify That the Problem Has Been Resolved     Step 7. Document the Problem and Solution     Step 8. Provide Feedback to the User A Place to Start Summary Chapter Review Questions Chapter 10: Troubleshooting Media Troubleshooting Copper Media     Tools     General Testing and Installation Issues Troubleshooting Fiber Optic Media     Tools     General Testing and Installation Issues Summary Chapter Review Questions Chapter 11: Network Troubleshooting Tools     Cable Testers     Protocol Analysis     Network Management     Flow Protocols     Handheld Network Analyzers     Advanced Analysis Products Troubleshooting Generalized User Complaints     Problem: Can’t Connect     Problem: Connections That Drop     Problem: Slow or Poor Performance General Troubleshooting Advice     Specific Error Types     Some Simple Guidelines     Specific Test Suggestions Summary Chapter Review Questions Appendix A: Copper Test Failure Cause Tables Wiremap Length Propagation Delay or Delay Skew Insertion Loss (Attenuation) NEXT and PSNEXT Return Loss ACRF and PSACRF (ELFEXT and PSELFEXT) Resistance Characteristic Impedance Impulse Noise Alien Crosstalk Mitigation Appendix B: Waveform Decoding Exercise Module 1: Counting Systems and Encoding Methods     Counting Systems     OSI Seven-Layer Model     Signaling and Encoding Methods Module 2: Decoding a Waveform into Ethernet     10Mbps Transmission Process     Decoding the Waveform Module 3: Using Standards Documents and RFCs     Standards and RFCs Module 4: Using a Protocol Analyzer     OptiView Protocol Expert in Five Buttons     Protocol Expert Lab Appendix C: Auto-Negotiation FLP Field Definitions     Base Page     Message Pages     Unformatted Pages     Extensions to Auto-Negotiation for 1000BASE-X     Extensions to Auto-Negotiation for 10GBASE-T Appendix D: Discovering Device Behavior At What Layer Does This Device Operate?     Test #1: Basic Functionality     Test #2: The Gray Area     Test #3: Find Any Configured VLANs How to Use the Test Results     Collision Domain     Broadcast Domain     Different Network Appendix E: Techniques for Troubleshooting Switches What Problems Are Encountered in Switched Environments?     How Do You Find Which Port or Switch Has a Problem? Techniques for Troubleshooting a Switch     Method 1: Access the Switch Console     Method 2: Connect to an Unused Port     Method 3: Configure a Mirror or Span Port     Method 4: Connect to a Tagged or Trunk Port     Method 5: Insert a Hub into the Link     Method 6: Place the Tester in Series     Method 7: Place a Tap Inline on a Link     Method 8: Use SNMP-Based Network Management     Method 9: Have the Switch Send Flow Technology Summaries     Method 10: Set Up a Syslog Server     Method 11: Use the Server (Host) Resources     Method 12: Use a Combination of Methods Troubleshooting Methods: Conclusion Appendix F: Simple Network Management Protocol SNMP Operation     SNMPv1     SNMPv2     SNMPv3 SNMP Use Appendix G: Troubleshooting with a Protocol Analyzer Understanding a Web Page Connection     DNS Query     ARP Query     TCP Connection     Data Transfer     Closing the Connection     DNS Failure Protocol Analyzers and Protocol Knowledge Appendix H: Network Diagnostic Products Used in This Book What Tool to Start With?     Network Operations     Network Engineering     Network Technicians     Network/PC Support Help Desk Media Test     DTX 1800 Cable Analyzer     OptiFiber Certifying OTDR     AnalyzeAir Wi-Fi Spectrum Analyzer Network Analysis: Hybrid Handhelds     OptiView     EtherScope     NetTool     LinkRunner Protocol Analysis     Capture     Built-in Features     Alarms and Triggers     Data Storage and Reporting Flow Protocols Analysis     Visual Performance Manager     Visual UpTime Select     NetFlow Tracker     Application Performance Appendix I: Answers to Chapter Review Questions     9780321647412   TOC   9/29/2009    

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Author Information

"Neal Allen is a senior engineer in the Technical Assistance Center (TAC) at Fluke Networks in Everett, Washington focusing on escalated issues related to Fluke Network s' server-based monitoring solutions.  His responsibilities in TAC are the particularly difficult or obscure problems, both phoned in and at various customer sites around the world.  He also works closely with the design engineers on new product or feature specifications and later on alpha and beta testing of the same.  Previously he was a product manager for handheld network analyzers.  His responsibilities in marketing were ""anything the engineers don't do,"" including market research, writing manuals and literature, helping to specify and beta test new products and product features, attending and delivering papers at trade shows, and providing both training and sales support worldwide.  Allen has been involved in network design, installation, and troubleshooting for nearly 20 years.  Although his focus has been primarily OSI Layer 3 and below, he has also designed and taught a number of short seminars and a three-quarter introductory networking course at local community colleges.  Allen has been a member of the Interop trade show NOC (Network Operations Center) team since 1993 and, in addition to other responsibilities, is responsible for troubleshooting show-floor problems at the Las Vegas Interop trade shows.  Allen was chosen to help support and troubleshoot the network for the 1996 Atlanta Olympic Games."

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