Are WANs Ready for Optical Topology Programming?
Are WANs Ready for Optical Topology Programming?
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DOI：
10.1145/3473938.3474510
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发表时间：
2021-08
期刊：
影响因子：
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通讯作者：
M. Hall;P. Barford;Klaus-Tycho Foerster;M. Ghobadi;William Jensen;Ramakrishnan Durairajan
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文献类型：
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作者：
M. Hall;P. Barford;Klaus-Tycho Foerster;M. Ghobadi;William Jensen;Ramakrishnan Durairajan
在当今的广域网中，光层是一种相对静态和不灵活的商品。作为响应，已经提出了光学拓扑编程（OTP），以使得能够从更高层快速且灵活地重新配置光学层处的波长。我们回答WAN是否为OTP做好了准备，结论是它们没有。我们通过测量长距离光纤跨度上的重新配置延迟来得出这一判断。为了推动OTP的可行性，我们展示了如何将提供电路的时间减少一个数量级-从几分钟到几秒。最后，我们提出了一种快速存储和加载光网络设备设置的方法，将时间缩短到1秒以内。
In today's wide-area networks, the optical layer is a relatively static and inflexible commodity. In response, Optical Topology Programming (OTP) has been proposed to enable fast and flexible reconfiguration of wavelengths at the optical layer from higher layers. We answer whether WANs are ready for OTP, concluding they are not. We reach this judgement by measuring reconfiguration delay on a long-haul fiber span. To push the needle on OTP towards feasibility, we show how to reduce the time to provision a circuit by an order of magnitude---from minutes to seconds. Finally, we propose a method to quickly store and load optical network equipment settings, reducing the time to less than 1 second.