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首页> 外文期刊>Optical Communications and Networking, IEEE/OSA Journal of >Dynamic restoration with GMPLS and SDN control plane in elastic optical networks [Invited]
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Dynamic restoration with GMPLS and SDN control plane in elastic optical networks [Invited]

机译：弹性光网络中使用GMPLS和SDN控制平面进行动态恢复[已邀请]

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摘要

Optical transport networks typically deploy dynamic restoration mechanisms in order to automatically recover optical connections disrupted by network failures. Elastic optical networks (EONs), currently emerging as the next-generation technology to be adopted in optical transport, introduce new challenges for traditional generic multiprotocol label-switching (GMPLS)-based restoration that may seriously impact the achievable recovery time. At the same time, the software-defined networking (SDN) framework is emerging as an alternative control plane. It is therefore important to investigate possible benefits provided by SDN in the implementation of restoration mechanisms for EONs. This paper proposes a dynamic restoration scheme for EONs based on the SDN framework. The proposed scheme contemporarily exploits centralized path computation and node configuration to avoid contentions during the recovery procedure with the final aim of minimizing the recovery time. The performance of the proposed scheme is evaluated by means of simulations in terms of recovery time and restoration blocking probability and compared against three reference schemes based on GMPLS and SDN.
机译：光传输网络通常部署动态恢复机制，以自动恢复由于网络故障而中断的光连接。弹性光网络（EONs）当前正在成为光传输中要采用的下一代技术，它给基于传统通用多协议标签交换（GMPLS）的恢复带来了新的挑战，这可能会严重影响可实现的恢复时间。同时，软件定义网络（SDN）框架正在作为替代控制平面出现。因此，重要的是要研究SDN在实施EON恢复机制方面可能带来的好处。本文提出了一种基于SDN框架的EONs动态恢复方案。所提出的方案同时利用集中路径计算和节点配置来避免恢复过程中的争用，最终目的是使恢复时间最小化。通过仿真对恢复时间和恢复阻塞概率进行了评估，并与基于GMPLS和SDN的三个参考方案进行了比较。

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