A cross-domain orchestration method for network services optimized for end-to-end latency performance

Abstract

The invention discloses a service function chain cross-domain orchestration method optimized for end-to-end delay performance, comprising: an S1 advanced orchestrator responds to a service request from a user or a network administrator, and describes the service request as a weighted service graph; The S2 high-level orchestrator divides the service graph into several weighted sub-service graphs and assigns them to corresponding sub-network domains; the low-level orchestrator in the S3 sub-network domain performs intra-domain orchestration mapping on the received sub-service graphs, and The result of the orchestration mapping in the domain is sent to the advanced orchestrator; the S4 advanced orchestrator receives the result of the orchestration mapping in the domain and judges whether the mapping of the sub-service graph is successful. If it is successful, it will end, and if it fails, it will re-execute S2. The service function chain cross-domain orchestration method of the present invention can make full use of the abundant available resources of the cross-domain network to meet the resource requirements of network services, and at the same time minimize the end-to-end delay of network services in the cross-domain network, thereby effectively improving the efficiency of end users. service experience.

Description

technical field [0001] The invention relates to the field of cross-domain deployment of network services. More specifically, it relates to a network service cross-domain orchestration method optimized for end-to-end latency performance. Background technique [0002] Over the past few years, the evolution of communication technology and the role it plays in the daily life of society as a whole has had a huge impact on social and economic development. Usually, when a network user acquires a network application, business traffic needs to obtain additional network services, such as performance enhancement and security services, in addition to normal network connectivity, to ensure the normal operation of the business. In today's network, network operators have deployed a large number of service function devices in network domains such as data center networks, access networks, and backbone networks. Typical service functions include firewall, network address translation, intrus...

AI Technical Summary

Problems solved by technology

There are many defects in this method: in order to make the traffic pass through the service function, the routing policy configuration is complex and error-prone; it is difficult to introduce new network services, which involves complex network configuration modifications; in order to meet the needs of users during peak traffic periods, a large amount of redundancy has to be deployed service function hardware devices, etc.

On the other hand, business traffic passing through multiple cloud data centers will inevitably generate additional network delay

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