Method and device for selecting traffic engineering path

Abstract

Embodiments of the present invention provide a method and device for selecting a traffic engineering path, which can reduce service congestion of the entire network and improve network utilization. The method includes: calculating at least one constrained traffic engineering path for a target source node and a target sink node according to traffic engineering TE constraints; calculating an automatic selection value of at least one constrained traffic engineering path according to VPN service constraints and a formula ; Select the constrained traffic engineering path corresponding to the maximum automatically selected value as the optimal traffic engineering path when establishing a VPN service between the target source node and the target sink node.

Description

technical field [0001] Embodiments of the present invention relate to the communication field, and in particular, to a method and device for selecting a traffic engineering path. Background technique [0002] With the rise of information communications technology (ICT) services such as mobile Internet, mobile commerce, and big data, it has had a profound impact on people's daily production and life, bringing great convenience to users, and at the same time, information and The construction of communication infrastructure puts forward higher requirements such as on-demand supply, on-demand change, flexibility and robustness. The emergence of software defined network (software defined network, SDN) technology adapts to the trend of network IT, equipment software and hardware standardization. The design concept of SDN is to separate the control plane and the forwarding plane of the network. The logically centralized control plane can support flexible scheduling of network reso...

AI Technical Summary

Problems solved by technology

The deployed traffic engineering path is generally the shortest in length or the shortest in the number of hops, but the bandwidth of a link may be small, and the service bandwidth using traffic engineering is too high in the link bandwidth, and the small bandwidth of a link may become bottleneck of traffic congestion

Secondly, a link at a key location may be used by multiple traffic engineering paths. If this link fails, a large number of key services that use traffic engineering paths will be affected.

Again, some paths with a slightly longer length or a slightly larger number of hops may have wider link bandwidth and fewer traffic engineering services. They are better traffic engineering paths, but they cannot be selected under the existing calculation method

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