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Inter-datacenter networks need to support datacenter communication with the end-users, as well as content replication and synchronization between datacenters in a reliable manner. This paper presents a survivable manycast, anycast and replica placement strategy for optical inter-datacenter networks resulting in reduced overall network resource consumption.
In this paper, two basic methods for a performance and power adaptivity on system and component level in optical interconnects for data center communications are introduced and explained. The approaches are investigated in the EC FP7 project ADDAPT (Adaptive Data and Power Aware Transceivers for Optical Communications) which targets significant power savings in optical interconnects. First, a rapid...
We introduce physical-layer network coding for a passive optical interconnect architecture in datacenter networks. Results reveal that half of the wavelengths can be saved to obtain latency in the magnitude of microseconds.
We present heuristic algorithms for the efficient resource partitioning in the NEPHELE datacentre optical interconnect. The algorithms aim to segment the network into smaller and isolated virtual datacentres (VDCs), where all racks are able to communicate at full capacity irrespective of their placement. Since the NEPHELE architecture relies on shared optical rings, the isolation of VDC traffic is...
This paper reports on the overall outcome of the FP7 DISCUS project, which aimed at designing end to end architectures, protocols and a physical layer exploiting Long-Reach Passive Optical Network an integrated access and metro network interconnected with a low cost flat optical core network. Our architectural modelling results show that the benefits of node consolidation on the access side extends...
In this work, the loss and bandwidth performance of flexible multimode polymer waveguides are investigated under different launch conditions. It is shown that bending excess loss below 2 dB is achieved for radii larger than 3 mm for a 50 µm MMF input, and twisting excess loss below 0.6 dB for up to 1 full 360-degree turn even for a relatively overfilled launch. The bandwidth studies reveal that bending...
Extending the notion of Software Defined Network (SDN) from packet switching in Layers 2 and 3 to circuit switching in transport layer for service providers is a promising scenario to meet the high burstiness and high bandwidth requirements. For service providers to have a multilayer, multi-domain controller, which can provide automated controller based restoration and protection even in unprotected...
Optical interconnection provisioning in Data Center (DC) draws lots of interests thanks to its high bandwidth and power efficiency. Optical TDM connection is an alternative solution to enable port sharing but with guaranteed bandwidth. At the same time, since the throughput of traffic in DC is fluctuating through time, it is quite critical to adjust the TDM slot allocation dynamically according to...
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