大规模广域网的分离结构
Split Architecture for Large Scale Wide Area Networks
摘要：
本报告根据在电信运营商项目期间确定的需求定义了电信级拆分架构。它提出了SplitArchitecture建议，即为接入/聚合网络等大规模广域网引入的软件定义网络（SDN）的概念，并针对架构权衡评估技术问题。首先，我们提出的SplitArchitecture的控制和管理架构。在这里，我们讨论了一个递归的控制架构组成的分层堆叠的控制平面，并提供有关网络管理集成到SDN一般和SplitArchitecture特别是初步考虑。接下来，讨论支持运营商级SplitArchitecture的OpenFlow扩展。这些是：a）开放性和可扩展性; b）虚拟化; c）OAM; d）弹性方法; e）引导和拓扑发现; f）服务创建; g）节能联网; h）QoS方面;以及i）多层方面。此外，我们还讨论了现代运营商网络所面临的选定部署和采用场景，例如服务创建场景和对等方面，即，如何与传统网络互连。最后，我们指出了我们的SplitArchitecture方法如何满足接入/聚合网络场景中的运营商级可扩展性要求
英文摘要：
This report defines a carrier-grade split architecture based on requirements identified during the SPARC project. It presents the SplitArchitecture proposal, the SPARC concept for Software Defined Networking (SDN) introduced for large-scale wide area networks such as access/aggregation networks, and evaluates technical issues against architectural trade-offs. First we present the control and management architecture of the proposed SplitArchitecture. Here, we discuss a recursive control architecture consisting of hierarchically stacked control planes and provide initial considerations regarding network management integration to SDN in general and SplitArchitecture in particular. Next, OpenFlow extensions to support the carrier-grade SplitArchitecture are discussed. These are: a) Openness & Extensibility; b) Virtualization; c) OAM; d) Resiliency approaches; e) Bootstrapping and topology discovery; f) Service creation; g) Energy-efficient networking; h) QoS aspects; and i) Multilayer aspects. In addition, we discuss selected deployment and adoption scenarios faced by modern operator networks, such as service creation scenarios and peering aspects, i.e., how to interconnect with legacy networks. Finally, we indicate how our SplitArchitecture approach meets carrier grade scalability requirements in access/aggregation network scenarios
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
