Using the Troubleshooting Guide for Maintenance and Troubleshooting

For details about maintenance and troubleshooting, see the related troubleshooting guides.

• For enterprise users: Troubleshooting Guide.

• For carriers: Troubleshooting Guide.

This guide provides all the maintenance guidelines, including:

• Routine maintenance: describes routine maintenance operations from the aspects, such as routine maintenance items, operation guidelines, maintenance record tables, and risky operations.

• Emergency maintenance: describes how to perform emergency maintenance for device faults, service faults, and password retrieval and restoration.

  

  Common password clearing methods include clearing the configuration file, clearing the console port login password by pressing Ctrl+B, and resetting the password by pressing the RST button on the control board. The method of clearing the password varies according to the device model. For details, see the Maintenance Guide.

• Troubleshooting: describes common faults and troubleshooting methods, and describes how to diagnose and rectify faults using the Revelations of Troublesolving tool.

• Configuration and deployment instructions: describe configuration and deployment requirements in some application scenarios to prevent service interruptions caused by incorrect configuration, incorrect use, or low reliability during service configuration or deployment.