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Public and Private Enterprise clouds are changing the nature of WAN data center interconnects. Datacenter WAN interconnects today are pre-allocated, static optical trunks of high capacity. These optical pipes carry aggregated packet traffic originating from within the datacenters while routing decisions are made by devices at the datacenter edges. In this paper, we propose a software-defined networking enabled optical transport architecture (Transport SDN) that meshes seamlessly with thedoi:10.1109/hoti.2013.20 dblp:conf/hoti/SadasivaraoSPLMGL13 fatcat:ktrwy74rl5g5vpokdj264ugiqi