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The success of “CLOS Fabric” in the DC space inspired Content Service Providers as well as other companies like Telcos and MSOs (Cable) to investigate the possibility of using similar concepts as building blocks of their WAN networks.

 

This article discusses motivation, applicability as well as limitations and impact on network operations when the CLOS fabric concept is applied to a WAN network. In subsequent articles, other aspects such as device selection, capacity and cable planning, routing control plane design and finally operation support toolset will be discussed.

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