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Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
Network Troubleshooting
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Network Troubleshooting

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  • Graphic 8.1.1.1
  • Graphic 8.1.2.1
  • Graphic 8.1.3.1
  • Graphics 8.1.4.1
  • Graphic 8.2.1.1
  • Graphic 8.2.2.1
  • Graphic 8.2.3.1
  • Graphic 8.2.4.1
  • Graphic 8.2.5.1
  • Graphics 8.2.6.1 & 8.2.6.2
  • Graphic 8.3.1.1
  • Graphic 8.3.2.1
  • Graphic 8.3.3.1
  • Graphic 8.3.4.1
  • Graphic 8.3.6.1
  • Graphic 8.3.7.1
  • Graphic 8.4.1.1
  • Graphic 8.4.2.3
  • Graphics 8.4.3.3, 8.4.3.4, 8.4.3.5
  • Graphic 8.4.4.2
  • Graphics 8.4.5.1 & 8.4.5.2
  • Graphics 8.4.6.3 & 8.4.6.4
  • Transcript

    • 1. Network Troubleshooting Accessing the WAN – Chapter 8
    • 2. Objectives <ul><li>Establish a network baseline </li></ul><ul><li>Describe troubleshooting methodologies and troubleshooting tools </li></ul><ul><li>Describe the common issues that occur during WAN implementation </li></ul><ul><li>Troubleshoot enterprise network implementation issues </li></ul>
    • 3. Establish a Network Baseline <ul><li>Explain the importance of network documentation </li></ul>
    • 4. Establish a Network Baseline <ul><li>Describe the stages of the network documentation process </li></ul>
    • 5. Establish a Network Baseline <ul><li>Explain the purpose for measuring normal network performance when creating a baseline </li></ul>
    • 6. Establish a Network Baseline <ul><li>Describe the steps for establishing a network baseline </li></ul>
    • 7. Describe Troubleshooting Methodologies and Troubleshooting Tools <ul><li>Explain why a systematic method is the generally the best approach to troubleshooting </li></ul>
    • 8. Describe Troubleshooting Methodologies and Troubleshooting Tools <ul><li>Describe how layered models, such as the OSI reference model or TCP/IP model, are used for troubleshooting </li></ul>
    • 9. Describe Troubleshooting Methodologies and Troubleshooting Tools <ul><li>Describe the three stages of the general troubleshooting process </li></ul>
    • 10. Describe Troubleshooting Methodologies and Troubleshooting Tools <ul><li>Describe the three main methods for troubleshooting network problems </li></ul>
    • 11. Describe Troubleshooting Methodologies and Troubleshooting Tools <ul><li>Describe the stages for gathering symptoms for troubleshooting a network problem </li></ul>
    • 12. Describe Troubleshooting Methodologies and Troubleshooting Tools <ul><li>Describe the types of software and hardware tools that are commonly used when troubleshooting networks </li></ul>
    • 13. Describe the Common Issues that Occur During WAN Implementation <ul><li>Describe the fundamentals in WAN design and communication </li></ul>
    • 14. Describe the Common Issues that Occur During WAN Implementation <ul><li>Describe the steps for designing or modifying a WAN </li></ul>
    • 15. Describe the Common Issues that Occur During WAN Implementation <ul><li>Describe the considerations for analyzing WAN traffic </li></ul>
    • 16. Describe the Common Issues that Occur During WAN Implementation <ul><li>Describe the considerations for designing a WAN topology </li></ul>
    • 17. Describe the Common Issues that Occur During WAN Implementation <ul><li>Describe common WAN implementation issues </li></ul>
    • 18. Describe the Common Issues that Occur During WAN Implementation <ul><li>Describe the recommended steps for troubleshooting a WAN </li></ul>
    • 19. Troubleshoot Enterprise Network Implementation Issues <ul><li>Explain how network diagrams are used for troubleshooting </li></ul>
    • 20. Troubleshoot Enterprise Network Implementation Issues <ul><li>Describe how to troubleshoot network problems occurring at the physical layer </li></ul>
    • 21. Troubleshoot Enterprise Network Implementation Issues <ul><li>Describe how to troubleshoot network problems occurring at the data link layer </li></ul>
    • 22. Troubleshoot Enterprise Network Implementation Issues <ul><li>Describe how to troubleshoot network problems occurring at the network layer </li></ul>
    • 23. Troubleshoot Enterprise Network Implementation Issues <ul><li>Describe how to troubleshoot network problems occurring at the transport layer </li></ul>
    • 24. Troubleshoot Enterprise Network Implementation Issues <ul><li>Describe how to troubleshoot network problems occurring in the application layers </li></ul>
    • 25. Summary <ul><li>Network Baseline </li></ul><ul><ul><li>How a network is expected to perform under normal conditions </li></ul></ul><ul><li>Network documentation should include: </li></ul><ul><ul><li>Network configuration table </li></ul></ul><ul><ul><li>End-system configuration table </li></ul></ul><ul><ul><li>Network topology diagram </li></ul></ul><ul><li>Planning for the 1 st baseline </li></ul><ul><ul><li>Determine what type of data to collect </li></ul></ul><ul><ul><li>Identify devices and ports of interest </li></ul></ul><ul><ul><li>Determine baseline duration </li></ul></ul>
    • 26. Summary <ul><li>3 stages of the troubleshooting process </li></ul><ul><ul><li>Gather symptoms </li></ul></ul><ul><ul><li>Isolate problem </li></ul></ul><ul><ul><li>Correct problem </li></ul></ul><ul><li>3 main methods for troubleshooting a network </li></ul><ul><ul><li>Bottom up </li></ul></ul><ul><ul><li>Top down </li></ul></ul><ul><ul><li>Divide & conquer </li></ul></ul>
    • 27. Summary <ul><li>Software troubleshooting tools </li></ul><ul><ul><li>Cisco view </li></ul></ul><ul><ul><li>Solar winds </li></ul></ul><ul><ul><li>HP Open view </li></ul></ul><ul><li>Hardware troubleshooting tools </li></ul><ul><ul><li>Network analysis mode </li></ul></ul><ul><ul><li>Digital multi-meters </li></ul></ul><ul><ul><li>Cable testers </li></ul></ul><ul><ul><li>Network analyzer </li></ul></ul>
    • 28. Summary <ul><li>Common WAN implementation issues include </li></ul><ul><ul><li>QoS </li></ul></ul><ul><ul><li>Reliability </li></ul></ul><ul><ul><li>Security </li></ul></ul><ul><ul><li>Latency </li></ul></ul><ul><ul><li>Confidentiality </li></ul></ul><ul><ul><li>Public or Private </li></ul></ul><ul><li>Using a layered approach to troubleshooting aids in </li></ul><ul><li>isolating and solving the problem </li></ul>
    • 29.  

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