CCNA Discovery 1 - Chapter 9
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This document discusses troubleshooting networks and provides guidance on the troubleshooting process. It describes gathering information about the problem, identifying potential causes, and testing to diagnose issues. Specific utilities are outlined to test connectivity, like IPConfig, ping, tracert and netstat. Common hardware and connection problems are reviewed for both wired and wireless networks. The importance of documentation during troubleshooting is emphasized. The document provides guidance on using helpdesk resources to resolve network problems.
CCNA Discovery 1 - Chapter 9
- 1. Troubleshooting Your Network Networking for Home and Small Businesses – Chapter 9 Version 4.0 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 1
- 2. Objectives Describe the troubleshooting process. Describe the utilities used to verify TCP/IP connectivity. Identify and describe common hardware and connection issues in wired and wireless networks. Utilize the troubleshooting process to document problems and interact with a help desk. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 2
- 3. The Troubleshooting Process Identify and describe troubleshooting process © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 3
- 4. The Troubleshooting Process Gathering Information © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 4
- 5. The Troubleshooting Process Describe approaches to troubleshooting © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 5
- 6. Utilities Used to Verify TCP/IP Connectivity Detecting Physical problems © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 6
- 7. Utilities Used to Verify TCP/IP Connectivity Identify and describe software utilities for troubleshooting connectivity. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 7
- 8. Utilities Used to Verify TCP/IP Connectivity Describe and use Ipconfig © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 8
- 9. Utilities Used to Verify TCP/IP Connectivity Describe and use ping © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 9
- 10. Utilities Used to Verify TCP/IP Connectivity Describe and use tracert © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 10
- 11. Utilities Used to Verify TCP/IP Connectivity Describe and use netstat © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 11
- 12. Utilities Used to Verify TCP/IP Connectivity Describe and use nslookup © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 12
- 13. Hardware and Connection Issues in Wired & Wireless Networks Isolating connectivity issues © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 13
- 14. Hardware and Connection Issues in Wired & Wireless Networks Describe the purpose of LED indicators and their meaning. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 14
- 15. Hardware and Connection Issues in Wired & Wireless Networks Describe connection issues with wired networks. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 15
- 16. Hardware and Connection Issues in Wired & Wireless Networks Identify and describe radio issues with a wireless network. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 16
- 17. Hardware and Connection Issues in Wired & Wireless Networks Identify and describe association and authentication issues within a wireless network. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 17
- 18. Hardware and Connection Issues in Wired & Wireless Networks DHCP Issues. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 18
- 19. Hardware and Connection Issues in Wired & Wireless Networks Troubleshooting Integrated Router to ISP connections. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 19
- 20. Utilizing the Troubleshooting Process for Documentation and Help Desk Interactions Describe the importance of documentation © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 20
- 21. Utilizing the Troubleshooting Process for Documentation and Help Desk Interactions Using outside sources of help © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 21
- 22. Utilizing the Troubleshooting Process for Documentation and Help Desk Interactions Using the Helpdesk © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 22
- 23. 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. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 23
- 24. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 24