Horizontal-based orchestration for multi-domain SFC in SDN/NFV-enabled satellite/terrestrial networks
Horizontal-based orchestration for multi-domain SFC in SDN/NFV-enabled satellite/terrestrial networks
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DOI：
10.1109/cc.2018.8387988
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发表时间：
2018-06
影响因子：
4.1
通讯作者：
Guanglei Li;Huachun Zhou;Bohao Feng;Guanwen Li;Qi Xu
中科院分区：
文献类型：
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作者：
Guanglei Li;Huachun Zhou;Bohao Feng;Guanwen Li;Qi Xu
它有望使用软件定义网络（SDN）和网络功能虚拟化（NFV）来集成卫星和地面网络。为了在这样的多域环境中构建网络服务功能链，我们提出了一种基于水平的多域服务功能链（Md-SFC）编排框架。在该框架中，多域协调器可以相互协调以保证端到端的服务质量。域内编排器还协调SDN控制器和NFV管理组件来实现域内服务功能链。在此基础上，我们进一步提出了一种启发式SFC映射算法，采用协作式域间路径计算方法，将服务功能链映射到基础设施。在该方法中，主多域编排器和域内编排器协调以选择适当的域间链路。我们将协作方法与朴素的非协作方法进行比较，即向主多域协调器提供域的拓扑信息，并直接计算域内服务功能链之间的最短域间路径。仿真结果表明我们的解决方案是可行的。能够通过横向协作构建端到端的性能保障服务功能链。协作式域间路径计算方法减少了主编排器的映射负载，并获得相同的端到端性能。
It's promising to use Software-Defined Networking (SDN) and Network Functions Virtualization (NFV) to integrate satellite and terrestrial networks. To construct network service function chains in such a multi-domain environment, we propose a horizontal-based Multi-domain Service Function Chaining (Md-SFC) orchestration framework. In this framework, multi-domain orchestrators can coordinate with each other to guarantee the end-to-end service quality. Intra-domain orchestrators also coordinate SDN controllers and NFV management components to implement intra-domain service function chains. Based on this, we further propose a heuristic SFC mapping algorithm with a cooperative inter-domain path calculation method to map service function chains to infrastructures. In this method, master multi-domain orchestrator and intra-domain orchestrators coordinate to select proper inter-domain links. We compare the cooperative method with a naive uncooperative way that domains' topology information is provided to the master multi-domain orchestrator and it calculates the shortest inter-domain path between intra-domain service function chains directly. Simulation results demonstrate that our solution is feasible. It is able to construct end-to-end performance guaranteed service function chain by horizontal-based cooperation. The cooperative inter-domain path calculation method decreases the mapping load for the master orchestrator and gets the same end-to-end performance.