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Orchestrating virtual slices in data centre infrastructures with optical DCN

机译：使用光学DCN在数据中心基础架构中编排虚拟片

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摘要

The emergence of new paradigms and services is pushing the limits of nowadays cloud infrastructures. It is a fact that current solutions lack in the flexibility and configurability to adapt to heterogeneous requirements coming from the applications/services to be supported over them. This results most of the time in severe underutilization of the underlying physical substrate. In light of this, newer approaches on resource provisioning and infrastructure management are needed. The Infrastructure as a Service (IaaS) paradigm is proposed as a solution to overcome these limitations. Thanks to IaaS, the physical infrastructure is partitioned onto virtual slices, encompassing heterogeneous resources (e.g. network, computing). Such a concept is expected to be harnessed by future data center (DC) infrastructures in order to cope efficiently with multi-tenancy as well as heterogeneous application requirements. However, current DC networks (DCNs) impose sever limitations onto traffic handling to fully exploit this vision. In light of this, optical technologies are seen as prime candidates for realizing the high performance network fabrics that future DC architectures will need. Under such an umbrella, it becomes primordial to develop specific provisioning solutions that account for the particularities of the optical medium, while providing the means to efficiently slice the DC infrastructure. With all of these in mind, in this article we present a solution for orchestrating and controlling virtual slices in a DC scenario with optical intra-DCN, with the scope of optimizing the underlying physical infrastructure utilization. The benefits of the presented solution are demonstrated against legacy architectures through exhaustive experiments and simulations.
机译：新范式和服务的出现推动了当今云基础架构的极限。事实是，当前的解决方案缺乏灵活性和可配置性以适应来自要在其上受支持的应用程序/服务的异构需求。大多数情况下，这会导致底层物理基材的严重利用不足。有鉴于此，需要在资源供应和基础架构管理方面采用更新的方法。提出了基础架构即服务（IaaS）范式作为克服这些限制的解决方案。多亏了IaaS，物理基础架构才被划分为虚拟切片，从而涵盖了异构资源（例如网络，计算）。预期将来的数据中心（DC）基础结构将采用这种概念，以便有效地应对多租户以及异构应用程序的需求。但是，当前的DC网络（DCN）对流量处理施加了严格的限制，以充分利用此构想。有鉴于此，光学技术被视为实现未来DC架构所需的高性能网络架构的主要候选者。在这样的保护下，开发特定的解决方案以解决光学介质的特殊性成为首要任务，同时提供有效切分DC基础设施的手段。考虑到所有这些因素，在本文中，我们提出了一种解决方案，用于在使用光学内部DCN的DC方案中协调和控制虚拟切片，其范围包括优化基础物理基础结构的利用率。通过详尽的实验和仿真，与传统架构相比，该解决方案的优势得到了证明。

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