Evaluation and experimental demonstration of SDN-enabled flexi-grid optical domain controller based on NETCONF/YANG

Bogdan-Mihai Andrus, A. Autenrieth, T. Szyrkowiec, J. Olmos, I. Monroy
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引用次数: 2

Abstract

Flexible spectrum assignment in Elastic Optical Networks (EON) has emerged as a potential solution for allowing dynamic and elastic management of available bandwidth resources. In this paper, we demonstrate and evaluate our developed flexi-grid optical domain controller based on NETCONF/YANG. Our proposed modular architecture, based on Finite State Machines (FSMs), allows the flexibility to deploy the controller either in a centralized or in a distributed state for on the fly encrypted device management connections. A testbed composed of two physical Sliceable Bandwidth Variable Transponders (SBVTs) and an emulated flexi-grid optical network was used for our software evaluation. Controller startup and synchronization time, as well as media channel setup time are evaluated to compare the two deployment options and assess network scaling effects. Results demonstrate that our software is scalable by maintaining a relatively constant startup time on the networks tested (i.e., 1 to 64 nodes) in both deployment options. Software scalability is also supported by the media channel setup time, which presents a modest log scale growth when increasing the number of nodes from one to 64.
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基于NETCONF/YANG的sdn柔性网格光域控制器评估与实验演示
弹性光网络(EON)中的灵活频谱分配已成为允许动态和弹性管理可用带宽资源的潜在解决方案。本文对基于NETCONF/YANG的柔性网格光域控制器进行了演示和评价。我们提出的模块化架构,基于有限状态机(FSMs),允许灵活地将控制器部署在集中式或分布式状态,用于动态加密设备管理连接。一个由两个物理可切片带宽可变转发器(sbvt)和一个模拟柔性网格光网络组成的测试平台用于我们的软件评估。对控制器启动和同步时间以及媒体通道设置时间进行评估,以比较两种部署选项并评估网络扩展效果。结果表明,在两种部署选项中,通过在测试网络(即1到64个节点)上保持相对恒定的启动时间,我们的软件是可扩展的。媒体通道设置时间也支持软件可伸缩性,当节点数量从1增加到64时,它呈现适度的对数尺度增长。
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