syngress sniffer pro network optimization troubleshooting handbook phần 1 ppt

[...]... Other Icons and Functions Miscellaneous Sniffer Pro Tools Packet Generator and Loopback Mode The Bit Error-Rate Test Reporter Ping Trace Route DNS Lookup Finger WhoIs Address Book The Expert The Capture False Positives 10 5 10 6 10 6 10 6 10 7 11 2 11 3 11 4 11 4 11 5 12 3 12 4 12 5 12 5 12 6 12 7 12 7 12 9 13 0 13 0 13 1 13 2 13 2 13 3 13 5 13 6 13 6 13 7 13 8 13 8 13 8 13 9 13 9 13 9 14 0 219 _sniffer_ TOC.qxd 6/28/02 5:00 PM Page xv... SCP exam xv 14 0 14 3 14 5 14 7 14 8 14 8 14 9 14 9 15 0 15 0 15 1 15 3 15 4 15 4 15 7 Chapter 4 Configuring Sniffer Pro to Monitor Network Applications 15 9 Introduction 16 0 Basic Sniffer Pro Data Capture Operations 16 0 Starting and Stopping the Capture Process 16 1 Viewing and Dissecting the Capture 16 6 Monitoring with the Summary, Details, and Hex Panes 16 6 Sniffer Pro Analyzer Placement 17 7 Sniffer Pro Advanced... Configuration 17 9 Switched Port Analyzer 18 0 How to Set Port Spanning 18 1 How to Set Port Spanning for a VLAN 18 1 Timestamping Procedures 18 3 Timestamp Columns and Timestamping 18 3 Viewing and Using the Expert 18 6 The Expert and Objects 18 7 Troubleshooting with the Expert System 18 8 The Expert Layers 18 8 Expert Alerts and Problems Indicators 19 3 False Positives and Negatives 19 7 219 _sniffer_ TOC.qxd... NetWare Optimization and Microsoft Optimization Common NetWare Optimization Needs Common Microsoft Optimization Needs Summary Solutions Fast Track Frequently Asked Questions Index 613 615 617 618 618 618 619 619 620 6 21 622 624 627 628 630 633 219 _sniffer_ fore.qxd 6/28/02 5: 01 PM Page xxv Foreword In today’s business-based network infrastructures, problems arise almost every second Either the network. .. potential problems on the network The Sniffer Pro Expert also provides possible causes of problems as well as potential solutions You will learn about the Expert in Chapter 3, “Exploring the Sniffer Pro Interface.” www .syngress. com 219 _sniffer_ 01. qxd 6/28/02 12 :43 PM Page 5 Introduction to Sniffer Pro • Chapter 1 Troubleshooting Methodology The key to successful troubleshooting is knowing how the network. .. 219 _sniffer_ 01. qxd 6/28/02 12 :43 PM Page 1 Chapter 1 Introduction to Sniffer Pro Solutions in this chapter: ■ Understanding Network Analysis ■ The OSI Model, Protocols, and Devices ■ Sniffer Pro Fundamentals ■ Sniffer Pro: The Exam ! Summary ! Solutions Fast Track ! Frequently Asked Questions 1 219 _sniffer_ 01. qxd 2 6/28/02 12 :43 PM Page 2 Chapter 1 • Introduction to Sniffer Pro Introduction Imagine it is 4:00 P.M... www .syngress. com 3 219 _sniffer_ 01. qxd 4 6/28/02 12 :43 PM Page 4 Chapter 1 • Introduction to Sniffer Pro A network professional can easily use this type of interface to analyze this data An example of the three-pane display is shown in Figure 1. 1 Figure 1. 1 The Sniffer Pro Decode Screen’s Three-Pane Display Network analyzers further provide the ability to create display filters so that a network professional can quickly... Baselining Over Time Trending Tips 19 8 205 208 209 210 210 211 214 214 215 216 216 224 225 226 228 2 31 232 232 236 238 239 2 41 243 247 250 2 51 2 51 252 256 257 257 219 _sniffer_ TOC.qxd 6/28/02 5:00 PM Page xvii Contents Taking Captures from the Menu and the Toolbar There are a few different ways of taking captures: ■ By choosing Capture | Start from the Main menu ■ By pressing the F10 key ■ By pressing the Start... Pro xxiii 552 552 555 556 556 556 557 559 560 5 61 563 567 568 568 569 570 572 574 576 586 590 594 597 597 599 6 01 6 01 603 606 611 219 _sniffer_ TOC.qxd xxiv 6/28/02 5:00 PM Page xxiv Contents Using Sniffer Pro to Find WAN Latency Solving Network Slowdowns with Sniffer Pro More Slow Network Problems Ethernet Optimization Ethernet Issues and the Need for Optimization Collisions and Collision Domains CRC... common problem! What I wanted was a book on how to create a capture filter and analyze traffic based on patterns using the Sniffer Pro Network Analyzer.That experience sent me on a mission to create the Sniffer Pro Network Optimization and Troubleshooting Handbook The Sniffer Pro product has been the savior of both novice and experienced network administrators by being able to pick up clues about a network . Dashboard 10 6 Real-Time Statistics 10 6 Utilization and Errors 10 7 Setting Thresholds 11 2 Configurable Dashboard Graphs 11 3 Understanding Menus 11 4 The File Menu 11 4 The Monitor Menu 11 5 The Capture. Panes 16 6 Sniffer Pro Analyzer Placement 17 7 Sniffer Pro Advanced Configuration 17 9 Switched Port Analyzer 18 0 How to Set Port Spanning 18 1 How to Set Port Spanning for a VLAN 18 1 Timestamping Procedures. Tab 14 0 Matrix 14 3 Host Table 14 5 Protocol Distribution 14 7 Statistics 14 8 Graphs, Charts, and Maps 14 8 Top Talkers 14 9 Heavy Protocol Distribution 14 9 Creating a List of Hosts on Your Network 15 0 Using