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Troubleshooting Your Network

Troubleshooting Your Network. Networking for Home and Small Businesses – Chapter 9. Objectives. T roubleshooting process U tilities used to verify TCP/IP connectivity H ardware and connection issues in wired and wireless networks D ocument ing problems and interact ing with a help desk.

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Troubleshooting Your Network

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  1. Troubleshooting Your Network Networking for Home and Small Businesses – Chapter 9

  2. Objectives • Troubleshooting process • Utilities used to verify TCP/IP connectivity • Hardware and connection issues in wired and wireless networks • Documenting problems and interacting with a help desk

  3. The Troubleshooting Process Troubleshooting is the process of identifying, locating and correcting problems = postup při pojmenování, nalezení a odstraňování problémů

  4. The Troubleshooting Process • Gathering Information= shromáždění informací

  5. The Troubleshooting Process Bottom – up = zdola nahoru. Pomalý, ale solidní přístup.

  6. The Troubleshooting Process Top - down = shora dolů. Hodí se tam, kde podezíráme uživatele.

  7. The Troubleshooting Process Divide – and – conquer = rozděl a panuj. Začneme uprostřed a podle nálezu postupujeme dolů nebo nahoru. Vhodné pro případy s jasnými příznaky a pro zkušené techniky.

  8. The Troubleshooting Process Trial – and – error = pokus a omyl. Uděláme kvalifikovaný odhad a zkusíme, je-li to ono. Substitution = výměna. Vadný díl nebo zařízení vyměníme za jiné. Tím problém přesuneme na jinou dobu, jinou osobu, nebo vyřešíme za cenu vyšších nákladů. Hodí se v případě laciných a/nebo neopravitelných dílů.

  9. Utilities Used to Verify TCP/IP Connectivity • SW Utilities

  10. Utilities Used to Verify TCP/IP Connectivity • Ipconfig

  11. Utilities Used to Verify TCP/IP Connectivity • ping

  12. Utilities Used to Verify TCP/IP Connectivity • Tracert

  13. Utilities Used to Verify TCP/IP Connectivity • netstat

  14. Utilities Used to Verify TCP/IP Connectivity • nslookup

  15. Hardware and Connection Issues in Wired & Wireless Networks • Isolating connectivity issues

  16. Hardware and Connection Issues in Wired & Wireless Networks • Purpose of LED indicators and their meaning

  17. Hardware and Connection Issues in Wired & Wireless Networks • Connection issues with wired networks

  18. Hardware and Connection Issues in Wired & Wireless Networks • Radio issues with a wireless network

  19. Hardware and Connection Issues in Wired & Wireless Networks • Association and authentication issues within a wireless network

  20. Hardware and Connection Issues in Wired & Wireless Networks • DHCP Issues

  21. Hardware and Connection Issues in Wired & Wireless Networks • Troubleshooting Integrated Router to ISP connections

  22. Utilizing the Troubleshooting Process for Documentation and Help Desk Interactions • Documentation

  23. Utilizing the Troubleshooting Process for Documentation and Help Desk Interactions • Using outside sources of help

  24. Utilizing the Troubleshooting Process for Documentation and Help Desk Interactions • Using the Helpdesk

  25. Summary • Effective troubleshooting combines instinct, experience, and structured techniques to identify, locate, and correct network or computer problems. • Documentation is essential in effective troubleshooting, and should contain baseline information about the network. • A large proportion of networking problems relate to physical components. • Many networking problems can be identified with software utilities such as ping, tracert, and netstat. • In a network containing both wired and wireless connections, it is important to isolate the problem to either the wired or wireless network.

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