Fast network updating method based on OpenNF mechanism

Abstract

The invention discloses a fast network updating method based on an OpenNF mechanism. The consistency of multi-NF and multi-data-flow updating is guaranteed; for a single data stream, a method for updating NFs in sequence in a traditional network updating method based on the OpenNF mechanism is changed; a method for calculating updating time separately and performing updating together is adopted, so that the updating time of the single stream is effectively shortened; optimization is performed by predicting the earliest release time of a buffer packet, so that the storage pressure of a controller can be reduced, and the possibility of parallel updating among multiple streams can be improved; and for the multiple streams, under the condition that network resource limitations of a CPU, a bandwidth, a controller memory and the like are considered, a multi-stream updating sequence is set so as to quickly update a network.

Description

technical field [0001] The invention relates to the field of network update, in particular to a fast network update method based on the OpenNF mechanism. Background technique [0002] The popularity of mobile devices and the widespread deployment of wireless networks have enabled more and more people to easily access the Internet. 3G / LTE technology has made smart devices have a high demand for multimedia streaming media. However, traditional hardware-based media services are difficult to meet Increasing user demands. Network Function Virtualization (Network Function Virtualization, NFV) and software-defined networking (SDN) technologies provide significant opportunities for reducing media service operating costs and improving network flexibility. Combining SDN and NFV, the network provides flexible traffic steering and network functions Joint optimization with resources, however, agility brings new challenges for network updates, which are defined as changing network forwar...

AI Technical Summary

Problems solved by technology

[0002] The popularity of mobile devices and the widespread deployment of wireless networks have enabled more and more people to easily access the Internet. 3G / LTE technology has made smart devices have a high demand for multimedia streaming media. However, traditional hardware-based media services are difficult to meet Increasing user demands

Network Function Virtualization (Network Function Virtualization, NFV) and software-defined networking (SDN) technologies provide significant opportunities for reducing media service operating costs and improving network flexibility. Combining SDN and NFV, the network provides flexible traffic steering and network functions Joint optimization with resources, however, agility brings new challenges for network updates, which are defined as changing network forwarding rules and updating NF states

Some existing works only consider forwarding rule updates while ignoring NF state updates, some works wait for existing flows to terminate and only reroute new flows, which increases update time and cost, and some works consider multiple flows at the same time update and network resource constraints, however they ignore the possibility of speeding up updates when multiple NFs update simultaneously in a flow, and their schemes are too coarse-grained to further optimize update time

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