Chapter8.Dial Troubleshooting Scenarios


Chapter 8. Dial Troubleshooting Scenarios

Many problems can occur through the train-up, authentication, and Point-to-Point Protocol (PPP) negotiation phases when making a dialup connection. In all cases, it is best to take a step-by-step approach through the connection until you find the area where the problem occurs. This book cannot cover the details of all that can occur in the case of train-up failures or slow speed connections, but it does provide many helpful hints, tips, and tricks to assist with dial troubleshooting.

The authentication and PPP negotiation stages can be resolved to the point of finding the exact cause of the problem almost every time. In certain cases, the provider or telephone company (telco) might be required to fix the issue.

Five troubleshooting scenarios are provided in this chapter. Each scenario covers the most common troubleshooting issues that occur and how to pinpoint the exact causes of the problems. Following the scenarios are frequently asked questions with answers that can help you with common troubleshooting issues that don't always have clear solutions, or that have causes that cannot be pinpointed without more expertise. The topics covered in this chapter are as follows :

  • Scenario 1: Authentication Time OutsPart I

  • Scenario 2: Authentication Time OutsPart II

  • Scenario 3: Frequent Retrains and Disconnects

  • Scenario 4: Dirty Phone Line

  • Scenario 5: Bad Modem

  • Frequently Asked Questions and Answers




Troubleshooting Remote Access Networks CCIE Professional Development
Troubleshooting Remote Access Networks (CCIE Professional Development)
ISBN: 1587050765
EAN: 2147483647
Year: 2002
Pages: 235

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