Network survivability path calculation method, system and path calculation server

Abstract

The embodiment of the invention relates to a network survivability path calculation method, a system and a path calculation server; the method comprises that operation path request information which carries business level information is received; the operation path request information is analyzed to obtain a business level, and the number and the type of the business level which need to be returned to a label exchange path, and the number and the content of the response information which corresponds to the label exchange path are determined; the label exchange path is calculated, and the response information which corresponds to the label exchange path and instructs how to use the label exchange path is generated; the response information comprises information for pre-reserving resource instructions, establishing connecting instructions, path type instructions and the label exchange path; and the response information is returned. The response information of the PCE in the embodiment of the invention which corresponds to LSP guides the PCC how to use the path and completes the pre-configuration of the path, thereby improving the utilization rate of the LSP returned by the PCE, and reducing the workload of the PCC.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular to a network survivability path calculation method and system, and a path calculation server. Background technique [0002] Network survivability refers to the ability of the network to maintain an acceptable level of service quality when subjected to various faults. Network survivability is a key factor in modern network planning, design and operation, and an important part of network integrity. Various survivability technologies can effectively improve network Quality of Service (QoS for short) and reduce service loss. The survivability of the transport network includes two technologies of protection and restoration. Among them, the protection technology is to provide reserved protection resources for bearer services in the network. When a network failure occurs, the affected services are arranged to be transmitted on a pre-allocated protection ...

AI Technical Summary

Problems solved by technology

[0008] In the PCE-based method, since the path returned by the PCE to the PCC is indistinguishable, after the PCC receives the path, it needs to decide how to use the path, thus increasing The burden on the path calculation client is reduced, and the path returned by PCE cannot be efficiently used

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