1th Chapter Fault Treatment MethodFirst, the complexity of the network
The general network includes routing, dialing, switching, video, WAN (ISDN, Frame Relay, ATM 、... ), LAN, VLAN 、...
Second, the Fault processing model
1. Defining the problem (Define the problem)
Describe the symptoms and potential causes of the failure in a detailed and precise manner
2. Collect detailed information (Gather Facts) r> information Source: Key users, network management systems, routers/switches
1) Identify symptoms:
2) Reproduce the fault: the checksum is still present
3) Investigate the frequency of faults:
4) Determine the scope of the failure: there are three ways to establish the fault range
? External-to-internal fault handling (outside-in troubleshooting): typically applicable to multiple hosts that cannot connect to a single server or server set
? Internal-to-external fault handling (inside-out troubleshooting):
? Half-point fault handling (divide-by-half troubleshooting)
3, consider possible circumstances (consider possibilities) to consider the possible cause of the failure
4. Create an action plan
5. Deployment Action Plan (Implement)
Used to correct the cause of network failure. From the most like the source of the fault, think of the processing method each completed a step to check whether the problem is resolved
6. Observe the results of the Action Plan implementation (Observe Results)
7, if there is an action plan can not solve the problem, repeat the above process (iterate as Needed)
Third, record the changes made
After solving the problem through an action plan, it is recommended to record all configuration changes as part of the troubleshooting process.
From for notes (Wiz)
1th Chapter Fault Treatment method
