An approach that controls the online upgrade of network embedded equipments is proposed. The key point control method is adopted to achieve the automatical detection and upgrade flow selection in the upgrade process. It is unneccessa-ry to restart the equipments before and after upgrade. The users can not see the upgrade process. The user friendliness of the common upgrade program was improved greatly. This paper focuses on the system safety in the process of network terminal e-quipment upgrade. In combination with the control by key points, the system safety is ensured. The upgrade program was verified on the embedded network equipment. The results prove the correctness and reliability of the method.%给出了一种控制网络嵌入式设备在线升级的方案,采用了关键点控制的方法,实现了升级过程自动检测选择升级流程,升级前后不需要重启设备,升级过程用户不可见,较大地改进了常用升级方案的用户友好性.在此重点结合网络设备升级保证系统安全性的要求,通过关键点的配合控制,保证升级对系统的全面安全.该升级方案在嵌入式网络设备上进行验证,结果证明了方法的正确性和可靠性.
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