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Inter-Datacenter WAN with centralized TE using SDN and OpenFlow

Ссылки на статьи 08.04.2013 Источник: Open Networking Foundation (ONF) Аннотация: Google offers many different services - Google Web Search, Google+, Gmail, YouTube, Google Maps -that are core to Google’s mission to organize the world’s information and make it universally accessible and useful. In order to serve a global user base with speed and high availability, large volumes of data need to be moved from one region to another making these applications/services very WAN-intensive.
When we look at the management, cost and performance of infrastructure, economies of scale have worked out well for storage and compute components but not necessarily for the WAN. This is for a variety of reasons such as non-linear complexity and interaction of networking devices, manual configuration and management and non-standard vendor configuration APIs.
We require a WAN where economies of scale deliver cost efficiency, higher
performance, better fault tolerance and manageability. We need to manage the WAN as a fabric and not as a collection of individual boxes.

Inter-Datacenter WAN with centralized TE using SDN and OpenFlow