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Cisco Express Forwarding by Stacia McKee, Russ White - CCIE No. 2635, Nakia Stringfield - CCIE No. 13451

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Chapter 4. Basic IP Connectivity and CEF Troubleshooting

This chapter covers the following topics:

Cisco Express Forwarding (CEF) troubleshooting can be tedious, laborious, and difficult. However, most instances of CEF troubleshooting do not require detailed Cisco IOS architecture and platform (hardware) architecture knowledge. For example, many CEF issues are found in two or three steps of troubleshooting. In addition, many issues that appear to be CEF-related end up being a result of a misconfiguration or inoperable end device.

The first section of this chapter presents the general troubleshooting used on Cisco ...

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