VLCcube: A VLC Enabled Hybrid Network Structure for Data Centers

Luo, Lailong; Guo, Deke; Wu, Jie; Qu, Ting; Chen, Tao; Xue-shan, Luo

doi:10.1109/tpds.2016.2646366

Cited by 20 publications

(4 citation statements)

References 24 publications

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“…Network topologies are selected in light of their use in engineering practices. In particular, switch-centric network topologies mainly include Fat-tree [8], Spine-leaf [9], etc., while servercentric network topologies mainly include Bcube [10], Dcell [12], etc [13][14][15][16][17][18][19][20]. Consequently, in our analysis, we concentrate on these three categories of topologies.…”

Section: Related Workmentioning

confidence: 99%

Study of data center communication network topologies using complex network propagation model

et al. 2023

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Data center, as the core infrastructure of data storage and processing, calls for network security protection. Information security has been addressed in a number of specific ways. However, there are few studies that employ network topology features to prevent the transmission of viruses. When a virus spreads, different topologies display various properties. In this paper, we study three types of data center network topologies, i.e., Fat-tree, Leaf-spine, and Bcube, and quantify the propagation characteristics in every topology through the IC propagation model. The probability of the device being infected, the count of propagation sources, the access of propagation sources, and the topological parameters are all considered. Given that network security defenders can only change the topology and topological parameters, we propose a computational framework that combines factor analysis, which provides us with the selection of network topological parameters with a low virus propagation rate in the candidate parameter set. Through experiments, we find that Leaf-spine has a good inhibitory effect on viruses with high propagation probability. Meanwhile, each offers unique advantages. We hope that more data center network topologies will be studied to improve the security of all data centers using these network topologies.

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Section: Related Workmentioning

confidence: 99%

Study of data center communication network topologies using complex network propagation model

et al. 2023

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“…In [14], a threshold-based, wireless link-aware flow placement algorithm with low complexity is put forward. Luo et al have presented VLCcube, an interrack wireless solution that extends the design of wireless DCN through organizing all racks into a wireless Torus structure via the emerging visible light links [15].…”

Section: Wireless Communications and Mobile Computingmentioning

confidence: 99%

“…Input: Topology graph G(V, E), , , route length limit Output: a set of routes for ( , ) (1) Tabu list T = 0, Route set S = 0, Node set N = { }; (2) for each node in set N do (3) if the length of the path from to is larger than then (4) Break; (5) end (6) for each neighbor a of node do (7) if a is equal to then (8) Add the path from to in the tree to S; (9) Add the nodes in the path to T except ; (10) else (11) if a is already included in T then (12) Cut and the subtree rooted at from the tree; (13) end (14) end (15) Add to N if ∉ N; (16) end (17) Remove from N; (18) end (19) Return S Algorithm 2: Route calculation.…”

Section: Wfn Schedulingmentioning

confidence: 99%

Layout-Independent Wireless Facility Constructing and Scheduling for Data Center Networks

Wei¹,

Sun²

2017

Wireless Communications and Mobile Computing

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The control packets in the data center networks (DCNs) have to contest with the data packets although they are usually much shorter in size and much more important in network management. Moreover, the uneven distribution of the packets may create potential traffic hotspots in the DCN which could degrade network performance drastically. To bridge these gaps, a layout-independent constructing algorithm and a scheduling method are put forward towards layout-independent wireless facility in data centers. First of all, a conflict aware spanning tree algorithm is developed to construct the wireless facility network (WFN). Secondly, a scheduling method which contains three steps, route calculation, traffic estimation, and flow scheduling, is presented. In the route calculation step, a route set between each node pair is calculated in advance for later usage. The scheduler estimates the traffic loads on the links on a regular basis in the traffic estimation step. Then, arrived data and control flows are scheduled according to multiple policies based on given route sets and scheduling objectives in the flow scheduling step. Finally, a series of experiments have been conducted on NS3 based on two typical data center layouts. Experimental results in both scenarios have validated our proposal' effectiveness.

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“…Recent interest has been generated in the optical wireless (OW) DCN because it not only eliminates the fundamental limitations introduced by the copper or fiber cables by employing optical wireless technology, but also brings efficient optical switching technology to the conventional electrical switch-based DCN. In particular, optical wireless technology avoids cable complexity, thereby enhancing the DCN's space utilization, heat dissipation, and energy efficiency [6]. In addition, it has the potential to offer great flexibility and ultra-high data rates over a broad unlicensed spectrum range [7], as well as negligible waveguide dispersion and attenuation [8].…”

Section: Introductionmentioning

confidence: 99%

Photonic integrated multicast switch-based optical wireless data center network

Zhang

Kraemer

Xue

et al. 2023

J. Opt. Commun. Netw.

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Optical wireless data center networks (OW-DCNs), which employ optical wireless technology and optical wired switching technology, are gaining interest as they promise to eliminate cable complexity, as well as to create high bandwidth interconnections and a low-cost and power-efficient system. In particular, the incorporation of optical tunable transmitters (T-TXs) and passive optical beam steering technologies is a promising way to build an OW-DCN benefitting from the potential of fast optical switching speed, low switch control complexity, and easy reconfiguration. However, the practical deployment of such an OW-DCN remains a challenge as fast (nanosecond) T-TX is required for fast optical switching operation. Implementation of fast T-TX can be realized by an array of lasers and optical gates, which are combined with photonic integration technology to achieve a compact, stable, and efficient nanosecond T-TX. In this paper, we propose an OW-DCN based on arrayed waveguide grating routers and fast T-TXs that exploit photonic integrated circuit multicast switches (PIC-MCSs). This PIC-MCS chip not only offers nanosecond-scale fast optical switching but also plays an essential role in enabling multicast operation, T-TX sharing, and dynamic bandwidth allocation between the intra- and inter-cluster networks. A 4×2 PIC-MCS has been designed, fabricated, and characterized in this proposed OW-DCN system. Experimental results validate that the proposed OW-DCN supports lossless, nanosecond, and multicast switching operation. Moreover, the dynamic bandwidth allocation and optical packet switching capability have been experimentally demonstrated. Finally, system performance with this fabricated PIC-MCS chip in a 4×4 rack OW-DCN is experimentally validated for different transmission scenarios and modulation formats. Wavelength division multiplexing multicast transmission with 50 Gb/s non-return-to-zero on–off-keying signals has been verified with less than 1.5 dB power penalty. 58 Gb/s four-level pulse-amplitude modulation transmission has also shown operation below the forward error correction threshold of 3.84×10−3 for all the different transmission scenarios.

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VLCcube: A VLC Enabled Hybrid Network Structure for Data Centers

Cited by 20 publications

References 24 publications

Study of data center communication network topologies using complex network propagation model

Study of data center communication network topologies using complex network propagation model

Layout-Independent Wireless Facility Constructing and Scheduling for Data Center Networks

Photonic integrated multicast switch-based optical wireless data center network

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