The dynamicity of today’s optical networks is far from its potential. Optical components, such as fast-tunable lasers or semiconductor optical amplifiers, can react on a nanosecond time scale, while the reconfiguration time of optical networks is many orders of magnitude larger, normally above a hundreds of milliseconds timescale. In this work, we address this gap with real-time control plane strategies that enhance the responsiveness of optical networks, specifically in the context of time-critical applications where service determinism is of paramount importance. This context represents an additional challenge since the infrastructure necessary to provide time-wise guarantees increases the complexity of the system under control. We describe in detail the real-time control plane for deterministic and dynamic networks and assess its value through experimental evaluation for the first time to our knowledge of a complete real-time control plane within a multinetwork segment testbed. We prove submillisecond overall reconfiguration time for multinetwork segment environments spanning distances of the order of tens of kilometers.

中文翻译：

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边缘云确定性和动态网络的实时控制和管理平面

当今光网络的动态性远未发挥其潜力。诸如快速可调激光器或半导体光放大器之类的光学组件可以在纳秒级的时间尺度上做出反应，而光网络的重新配置时间要大很多个数量级，通常在数百毫秒以上。在这项工作中，我们使用实时控制平面策略来解决这一差距，该策略可增强光网络的响应能力，特别是在对时间至关重要的应用中，服务确定性至关重要。由于提供及时的保证所必需的基础结构增加了受控系统的复杂性，因此该上下文带来了另一项挑战。我们详细描述了确定性和动态网络的实时控制平面，并通过我们对多网络网段测试平台中完整的实时控制平面的了解首次通过实验评估来评估其价值。我们证明了跨数十公里量级的多网段环境的亚毫秒级总体重新配置时间。