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Troubleshooting Roadmap
Figure 1-1 shows the troubleshooting flowchart. All possible causes of a fault can be grouped into multiple cause sets to reduce problem complexity. Systematic troubleshooting is to find fault causes step by step, and finally resolve the fault.
A fault can be detected on the user side (for example, a user cannot access the Internet) or on the network side (for example, an alarm is generated on a device). After a fault is detected, collect fault information about each device immediately, analyze fault information, and then locate and rectify the fault. For solution-level troubleshooting on the entire network, the key is to quickly locate the fault to a component based on the fault symptom and then rectify the fault.
