Wang Zeng
ABSTRACT
Considering the heterogeneity of computing and networking resources in the edge environment, this paper designs a service chain deployment system based on software-defined network and network function virtualization. It adopts a low-coupling layered design, which is divided into management, operation, and infra-structure layers from top to bottom. The management layer arranges node map-ping and routing according to certain policies, while the operation layer defines the entire service chain operation interface. The controller and related proxy services are designed and utilized to achieve global monitoring of the physical net-work and nodes, supporting fine-grained adjustment of virtual network functions and routing. Communication between virtual nodes can select different channels over the underlying network according to their needs, achieving logical isolation while supporting directed graph deployment. An online deployment method adapted to this system is designed to balance the load of each node and achieve greater capacity while satisfying latency constraints.
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