| 8.1 Establishing the Network Performance Baseline |
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| 8.1.1 Documenting Your Network |
| 8.1.2 Documenting Your Network |
| 8.1.3 Why is Establishing a Network Baseline Important? |
| 8.1.4 Steps for Establishing a Network Baseline |
| 8.2 Troubleshooting Methodologies and Tools |
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| 8.2.1 A General Approach to Troubleshooting |
| 8.2.2 Using Layered Models for Troubleshooting |
| 8.2.3 General Troubleshooting Procedures |
| 8.2.4 Troubleshooting Methods |
| 8.2.5 Gathering Symptoms |
| 8.2.6 Troubleshooting Tools |
| 8.3 Common WAN Implementation Issues |
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| 8.3.1 WAN Communications |
| 8.3.2 Steps in WAN Design |
| 8.3.3 WAN Traffic Considerations |
| 8.3.4 WAN Topology Considerations |
| 8.3.5 WAN Bandwidth Considerations |
| 8.3.6 Common WAN Implementation Issues |
| 8.3.7 Case Study: WAN Troubleshooting from an ISP's Perspective |