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      Fly-path: Traffic-based multi-hop routing approach for hybrid wireless data centers

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      Embargo Lift Date: 2023-03-15
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      Author(s)
      Mergenci, Cem
      Körpeoğlu, İbrahim
      Date
      2021-03-15
      Source Title
      Computer Communications
      Print ISSN
      0140-3664
      Electronic ISSN
      1873-703X
      Publisher
      Elsevier BV
      Volume
      170
      Pages
      95 - 108
      Language
      English
      Type
      Article
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      Abstract
      High data transfer rates achieved by 802.11ad at 60 GHz ISM band enables use of wireless communication in data centers. In this paper, we investigate the possibility of offloading traffic from wired to wireless network in hybrid data centers. By understanding the capabilities of the wireless network, we can design the hybrid data center network accordingly, to achieve better construction and operating efficiency. First, we propose a system model in which each top-of-the-rack switch is equipped with two radios, so that three non-overlapping channels of 802.11ad that are available worldwide can be assigned in an interference-free manner to any configuration of wireless links. Then, we propose multi-hop routing algorithms that assign traffic to wireless infrastructure. These algorithms consist of two families. SP family of algorithms route traffic only over shortest-paths between source and destination pairs. LP algorithms relax this restriction and assign traffic to longer paths when necessary. In order to evaluate the performance of our routing algorithms, we also propose a random data center traffic generation method, based on an analysis of a real-world data center traffic pattern. We evaluate the performance of our allocation methods in terms of different metrics for various network sizes. Results show that our methods can offload significant amount of traffic from wired to wireless network, can achieve quite high throughput, and can utilize wireless links very well.
      Keywords
      802.11ad
      60 GHz
      Wireless data center networking
      Data center traffic
      Routing
      Permalink
      http://hdl.handle.net/11693/76940
      Published Version (Please cite this version)
      https://doi.org/10.1016/j.comcom.2020.12.029
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      • Department of Computer Engineering 1561
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