Huawei Technologies Co., Limited

Chuanjun Wu

Yufei Wang

Xiaobing Zi

Zhicheng Sui

Xinchao Liu

The present application provides a method for planning a recovery resource for resisting N-time faults and an optical transmission device, and the method includes: planning, on an optical transmission device according to preset network planning information, a recovery resource for resisting (N&#x2212;1)-time faults for preset (N&#x2212;1)-time faults, and the recovery resource for resisting (N&#x2212;1)-time faults is an optimal recovery resource corresponding to each interrupted service during the preset (N&#x2212;1)-time faults; and planning, by the optical transmission device according to the network planning information and the recovery resource for resisting (N&#x2212;1)-time faults, a recovery resource for resisting N-time faults for preset N-time faults, where the recovery resource for resisting N-time faults is a network-wide optimal recovery resource corresponding to interrupted services during the N-time faults. According to the present application, recovery resource costs can be reduced, and recovery resource planning reliability can be improved.

Method for planning recovery resource for resisting N-time faults and optical transmission device

A path computation method is provided. A node device and a path computation element (PCE) are also provided correspondingly. The path computation method includes: sending a path computation request message to the PCE after receiving a client-side service transmission request, the path computation request message carrying identifiers of a source node and a destination node that access a client-side service and carrying a path concatenation constraint; and receiving the path computation response message carrying path information returned by the PCE, the path information being obtained by the PCE through computation according to the identifiers of the source node and the destination node that accesses a client-side service, the concatenation constraint, and concatenation capabilities of each interface of nodes in a network. The technical solution of the present invention is simpler and more convenient, which obviously reduces the complexity of the specific implementation.

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Shenzhen, China

Chuanjun Wu