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© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public ITE PC v4.0 Chapter 1 1 Troubleshooting Your Network Networking for Home and Small Businesses Chapter 9

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Page 1: Troubleshooting Your Networka1.phobos.apple.com/us/r30/CobaltPublic/v4/56/aa/63/56aa63db-59… · ITE PC v4.0 Chapter 1 1 Troubleshooting Your Network Networking for Home and Small

© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

ITE PC v4.0

Chapter 1 1

Troubleshooting Your Network

Networking for Home and Small Businesses – Chapter 9

Page 2: Troubleshooting Your Networka1.phobos.apple.com/us/r30/CobaltPublic/v4/56/aa/63/56aa63db-59… · ITE PC v4.0 Chapter 1 1 Troubleshooting Your Network Networking for Home and Small

ITE PC v4.0

Chapter 1 2 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

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.

Page 3: Troubleshooting Your Networka1.phobos.apple.com/us/r30/CobaltPublic/v4/56/aa/63/56aa63db-59… · ITE PC v4.0 Chapter 1 1 Troubleshooting Your Network Networking for Home and Small

ITE PC v4.0

Chapter 1 3 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

The Troubleshooting Process Identify and describe troubleshooting process

Page 4: Troubleshooting Your Networka1.phobos.apple.com/us/r30/CobaltPublic/v4/56/aa/63/56aa63db-59… · ITE PC v4.0 Chapter 1 1 Troubleshooting Your Network Networking for Home and Small

ITE PC v4.0

Chapter 1 4 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

The Troubleshooting Process Gathering Information

Page 5: Troubleshooting Your Networka1.phobos.apple.com/us/r30/CobaltPublic/v4/56/aa/63/56aa63db-59… · ITE PC v4.0 Chapter 1 1 Troubleshooting Your Network Networking for Home and Small

ITE PC v4.0

Chapter 1 5 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

The Troubleshooting Process Describe approaches to troubleshooting

Page 6: Troubleshooting Your Networka1.phobos.apple.com/us/r30/CobaltPublic/v4/56/aa/63/56aa63db-59… · ITE PC v4.0 Chapter 1 1 Troubleshooting Your Network Networking for Home and Small

ITE PC v4.0

Chapter 1 6 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Utilities Used to Verify TCP/IP Connectivity Detecting Physical problems

Page 7: Troubleshooting Your Networka1.phobos.apple.com/us/r30/CobaltPublic/v4/56/aa/63/56aa63db-59… · ITE PC v4.0 Chapter 1 1 Troubleshooting Your Network Networking for Home and Small

ITE PC v4.0

Chapter 1 7 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Utilities Used to Verify TCP/IP Connectivity Identify and describe software utilities for

troubleshooting connectivity.

Page 8: Troubleshooting Your Networka1.phobos.apple.com/us/r30/CobaltPublic/v4/56/aa/63/56aa63db-59… · ITE PC v4.0 Chapter 1 1 Troubleshooting Your Network Networking for Home and Small

ITE PC v4.0

Chapter 1 8 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Utilities Used to Verify TCP/IP Connectivity Describe and use Ipconfig

Page 9: Troubleshooting Your Networka1.phobos.apple.com/us/r30/CobaltPublic/v4/56/aa/63/56aa63db-59… · ITE PC v4.0 Chapter 1 1 Troubleshooting Your Network Networking for Home and Small

ITE PC v4.0

Chapter 1 9 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Utilities Used to Verify TCP/IP Connectivity Describe and use ping

Page 10: Troubleshooting Your Networka1.phobos.apple.com/us/r30/CobaltPublic/v4/56/aa/63/56aa63db-59… · ITE PC v4.0 Chapter 1 1 Troubleshooting Your Network Networking for Home and Small

ITE PC v4.0

Chapter 1 10 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Utilities Used to Verify TCP/IP Connectivity Describe and use tracert

Page 11: Troubleshooting Your Networka1.phobos.apple.com/us/r30/CobaltPublic/v4/56/aa/63/56aa63db-59… · ITE PC v4.0 Chapter 1 1 Troubleshooting Your Network Networking for Home and Small

ITE PC v4.0

Chapter 1 11 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Utilities Used to Verify TCP/IP Connectivity Describe and use netstat

Page 12: Troubleshooting Your Networka1.phobos.apple.com/us/r30/CobaltPublic/v4/56/aa/63/56aa63db-59… · ITE PC v4.0 Chapter 1 1 Troubleshooting Your Network Networking for Home and Small

ITE PC v4.0

Chapter 1 12 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Utilities Used to Verify TCP/IP Connectivity Describe and use nslookup

Page 13: Troubleshooting Your Networka1.phobos.apple.com/us/r30/CobaltPublic/v4/56/aa/63/56aa63db-59… · ITE PC v4.0 Chapter 1 1 Troubleshooting Your Network Networking for Home and Small

ITE PC v4.0

Chapter 1 13 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

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

Page 14: Troubleshooting Your Networka1.phobos.apple.com/us/r30/CobaltPublic/v4/56/aa/63/56aa63db-59… · ITE PC v4.0 Chapter 1 1 Troubleshooting Your Network Networking for Home and Small

ITE PC v4.0

Chapter 1 14 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Hardware and Connection Issues in Wired & Wireless Networks Describe the purpose of LED indicators and their

meaning.

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Chapter 1 15 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Hardware and Connection Issues in Wired & Wireless Networks Describe connection issues with wired networks.

Page 16: Troubleshooting Your Networka1.phobos.apple.com/us/r30/CobaltPublic/v4/56/aa/63/56aa63db-59… · ITE PC v4.0 Chapter 1 1 Troubleshooting Your Network Networking for Home and Small

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Chapter 1 16 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Hardware and Connection Issues in Wired & Wireless Networks Identify and describe radio issues with a wireless

network.

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ITE PC v4.0

Chapter 1 17 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Hardware and Connection Issues in Wired & Wireless Networks Identify and describe association and authentication

issues within a wireless network.

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Chapter 1 18 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

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

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Chapter 1 19 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

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

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Chapter 1 20 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Utilizing the Troubleshooting Process for Documentation and Help Desk Interactions Describe the importance of documentation

Page 21: Troubleshooting Your Networka1.phobos.apple.com/us/r30/CobaltPublic/v4/56/aa/63/56aa63db-59… · ITE PC v4.0 Chapter 1 1 Troubleshooting Your Network Networking for Home and Small

ITE PC v4.0

Chapter 1 21 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

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

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ITE PC v4.0

Chapter 1 22 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

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

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ITE PC v4.0

Chapter 1 23 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

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.

Page 24: Troubleshooting Your Networka1.phobos.apple.com/us/r30/CobaltPublic/v4/56/aa/63/56aa63db-59… · ITE PC v4.0 Chapter 1 1 Troubleshooting Your Network Networking for Home and Small

ITE PC v4.0

Chapter 1 24 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public