An overlay network virtualization SFC routing configuration, transmission method and system

Abstract

The present invention proposes an Overlay network virtualization SFC routing configuration method, transmission method and system, through SDN programmable control of the data plane of the Overlay network to realize the logical deployment and routing of a given SFC, and the data frames that guide the relevant traffic can be completely According to the order defined by the SFC, it passes through each network function node on the SFC hop by hop, and is processed by the network function node, so as to meet the requirements of related services for network security and network performance. On the one hand, the deployment of SFC and its implementation of traffic routing control are all controlled by SDN software, without relying on the underlying physical network or developing special physical network hardware, so SFC routing can be completely decoupled from the physical network; on the other hand On the one hand, since the SFC implementation technology does not modify the existing Overlay network virtualization technology, the entire function can be directly deployed in the existing Overlay network virtualization solution in an incremental manner.

Description

technical field [0001] The present invention relates to the field of cloud computing and network function virtualization, specifically, to the field of service function link routing configuration for overlay network data transmission across software and hardware, more specifically, to a virtual-real decoupling SFC oriented to the Overlay network Routing transmission method and system. Background technique [0002] In today's cloud computing virtualization environment, in order to solve the problems of limited virtual machine migration range, limited virtual machine scale, and limited network isolation capabilities, various manufacturers generally adopt Overlay-based network virtualization technology, such as figure 1 As shown, a virtual network independent of the physical network (that is, an Overlay network) is implemented on the underlying physical network (generally called an Underlay network, such as an underlying physical network composed of network devices connected to...

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Problems solved by technology

[0006] 2) Since the converged architecture and interfaces of the SDN-based Overlay architecture and the NFV architecture have not yet reached an agreement, currently supporting data transmission based on service function chains on the Overlay network is still facing a huge challenge, and its support for service function chains needs to expand Overlays such as VXLAN The encapsulation format and processing flow of the tunneling technology, and these need to be supported by specialized hardware

[0007] To sum up, it can be seen that the implementation of the current service function chain is tightly coupled with the physical network, and it is impossible to completely decouple the virtual network service and the physical network service as in the case of no service function chain

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