Cross-domain service chain mapping method and system in sdn/nfv environment

Abstract

The invention belongs to the field of network technology, and particularly relates to a cross-domain service chain mapping method and system in an SDN / NFV environment. The method includes: initialization of underlying physical network resource information; receiving a service chain construction request; The status of the underlying physical resources collected by the agent determines whether cross-domain mapping is required; if the service chain construction request requires cross-domain mapping, the service chain construction request is divided according to the minimum mapping overhead service chain segmentation scheme, and the service chain is mapped to the underlying physical resources. In the network; otherwise, the service chain is directly mapped to the underlying physical network. According to the service chain construction request, the invention determines the deployment location of the virtual network function instance under the condition of satisfying resource constraints, and plans the traffic routing path, uses the bat algorithm to solve the service chain segmentation and outputs the service chain segmentation scheme with the minimum mapping overhead, and reduces the algorithm calculation Complexity and resource consumption, efficiently complete the mapping of cross-domain service chain construction requests.

Description

technical field [0001] The invention belongs to the field of network technology, and in particular relates to a cross-domain service chain mapping method and system in an SDN / NFV environment. Background technique [0002] With the rise of software defined network (software defined network, SDN) and network function virtualization (network function virtualization, NFV), SDN / NFV architecture is more and more used in operator networks. SDN separates complex control functions from traditional network devices, so that network devices on the data plane are only responsible for high-speed forwarding, while network control and management are made by a logically centralized control plane, which effectively simplifies network management. NFV transforms the physical network function deployed in a specific location of the network in the form of proprietary hardware into a virtual network function (virtual network function, VNF) running on a general-purpose server, decoupling the softwar...

AI Technical Summary

Problems solved by technology

However, most of the existing methods focus on the service chain mapping under single-domain conditions, but have not conducted in-depth discussions on the problem of service chain mapping under cross-domain conditions.

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