On the impact of deploying optical transport networks using disaggregated line systems
On the impact of deploying optical transport networks using disaggregated line systems
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DOI：
10.1364/jocn.10.000a60
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
J. Santos;N. Costa;J. Pedro
中科院分区：
文献类型：
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作者：
J. Santos;N. Costa;J. Pedro
基于基本的软件定义网络原理，最近提出了针对光传输网络的分解解决方案。这种类型的第一个解决方案采用分解线路系统的形式，允许网络运营商使用来自多个供应商的分插复用器来构建网络。此外，这些线路系统允许自由连接任何符合规范的光转发器，而与其制造商无关。通过消除生产线系统对单一供应商的依赖，基于垂直集成解决方案的传统业务模式受到挑战，需要重新思考。此外，供应商之间的竞争预计将加剧，从而导致更高的创新和差异化。然而，与经过微调的线路系统的专有解决方案相比，共享一组通用规范和功能的可互操作线路系统的开发可能只能提供次优的光传输性能。因此，本文评估了分解式和专有光线路系统之间的路由性能。网络模拟是在考虑单域和多域专有部署的两种不同拓扑的情况下进行的。获得的结果表明，虽然专有线路系统保持了实现最佳光学性能的能力，但分解解决方案也不容忽视，因为它们有可能减少多供应商部署的光电接口数量，同时仍保证最小的需求阻塞。
Based on fundamental software-defined networking principles, disaggregated solutions have recently been proposed for optical transport networks. The first solution of such type takes the form of disaggregated line systems, which allow network operators to build networks using add/drop multiplexers from multiple vendors. In addition, these line systems allow any specification-compliant optical transponder to be freely connected, independent of their manufacturer. By removing the single-vendor dependency from line systems, traditional business models, based on vertically integrated solutions, are challenged and need to be rethought. Furthermore, competition between vendors is expected to increase, leading to higher innovation and differentiation. However, the development of interoperable line systems sharing a common set of specifications and capabilities may only be able to deliver suboptimal optical transmission performances when compared with proprietary solutions where line systems are fine-tuned. Hence, this paper evaluates the routing performance between disaggregated and proprietary optical line systems. Network simulations are carried out considering two different topologies with single- and multidomain proprietary deployments. The results obtained show that while proprietary line systems keep the capability of achieving the best optical performance, disaggregated solutions cannot be ignored since they have the potential to reduce the optical-electrical-optical interface count with respect to multivendor deployments while still guaranteeing minimal demand blocking.