%0 Conference Paper %1 cheng2016centralized %A Cheng, Yuxin %A Fiorani, Matteo %A Wosinska, Lena %A Chen, Jiajia %B IEEE GLOBECOM %D 2016 %K sendate sendate-extend %T Centralized Control Plane for Passive Optical Top-of-Rack Interconnects in Data Centers %X To efficiently handle the fast growing traffic inside data centers, several optical interconnect architectures have been recently proposed. However, most of them are targeting the aggregation and core tiers of the data center network, while relying on conventional electronic top-of-rack (ToR) switches to connect the servers inside the rack. The electronic ToR switches pose serious limitations on the data center network in terms of high cost and power consumption. To address this problem, we recently proposed a passive optical top-of-rack interconnect architecture, where we focused on the data plane design utilizing simple passive optical components to interconnect the servers within the rack. However, an appropriate control plane tailored for this architecture is needed to be able to analyze the network performance, e.g., packet delay, drop rate, etc., and also obtain a holistic network design for our passive optical top-of-rack interconnect, which we refer to as POTORI. To fill in this gap, this paper proposes the POTORI control plane design which relies on a centralized rack controller to manage the communications inside the rack. To achieve high network performance in POTORI, we also propose a centralized medium access control (MAC) protocol and two dynamic bandwidth allocation (DBA) algorithms, namely Largest First (LF)and Largest First with Void Filling (LFVF). Simulation results show that POTORI achieves packet delays in the order of microseconds and negligible packet loss probability under realistic data center traffic scenarios.

@inproceedings{cheng2016centralized, abstract = {To efficiently handle the fast growing traffic inside data centers, several optical interconnect architectures have been recently proposed. However, most of them are targeting the aggregation and core tiers of the data center network, while relying on conventional electronic top-of-rack (ToR) switches to connect the servers inside the rack. The electronic ToR switches pose serious limitations on the data center network in terms of high cost and power consumption. To address this problem, we recently proposed a passive optical top-of-rack interconnect architecture, where we focused on the data plane design utilizing simple passive optical components to interconnect the servers within the rack. However, an appropriate control plane tailored for this architecture is needed to be able to analyze the network performance, e.g., packet delay, drop rate, etc., and also obtain a holistic network design for our passive optical top-of-rack interconnect, which we refer to as POTORI. To fill in this gap, this paper proposes the POTORI control plane design which relies on a centralized rack controller to manage the communications inside the rack. To achieve high network performance in POTORI, we also propose a centralized medium access control (MAC) protocol and two dynamic bandwidth allocation (DBA) algorithms, namely Largest First (LF)and Largest First with Void Filling (LFVF). Simulation results show that POTORI achieves packet delays in the order of microseconds and negligible packet loss probability under realistic data center traffic scenarios.}, added-at = {2017-09-06T14:42:38.000+0200}, author = {Cheng, Yuxin and Fiorani, Matteo and Wosinska, Lena and Chen, Jiajia}, biburl = {https://www.bibsonomy.org/bibtex/2b699c3bb4dc2f5aa4164d7aac85df541/marilet}, booktitle = {IEEE GLOBECOM}, eventtitle = {GLOBECOM 2016}, interhash = {7615bcfd75fab7faa3d4186154bdebe0}, intrahash = {b699c3bb4dc2f5aa4164d7aac85df541}, keywords = {sendate sendate-extend}, timestamp = {2017-09-06T15:55:45.000+0200}, title = {Centralized Control Plane for Passive Optical Top-of-Rack Interconnects in Data Centers}, year = 2016 }