| 摘要 |
A method for detecting an available/unavailable state of a packet transport network, includes the steps of: in the packet transport network, detecting a severely errored second (SES) using performance parameters of the packet transport network, and detecting an available/unavailable time with the SES as a reference, and thus providing a method of determining if the packet transport network enters and exits the available/unavailable state. In this way, the detection of the available time of the packet transport network is achieved, and it is ensured that performance parameters of the packet transport network are measured when the packet transport network is in an available state, while the measurement of the performance parameters of the packet transport network is stopped when the packet transport network is in an unavailable state. Thus, the OAM mechanism of the packet transport network can be improved, and the defects in the performance management of the packet transport network can be eliminated.
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