An Efficient Shortest-Path Routing Algorithm in the Data Centre Network DPillar

  • Alejandro EricksonEmail author
  • Abbas Eslami Kiasari
  • Javier Navaridas
  • Iain A. Stewart
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9486)


DPillar has recently been proposed as a server-centric data centre network and is combinatorially related to the well-known wrapped butterfly network. We explain the relationship between DPillar and the wrapped butterfly network before proving a symmetry property of DPillar. We use this symmetry property to establish a single-path routing algorithm for DPillar that computes a shortest path and has time complexity \(O(k\log (n))\), where k parameterizes the dimension of DPillar and n the number of ports in its switches. Moreover, our algorithm is trivial to implement, being essentially a conditional clause of numeric tests, and improves significantly upon a routing algorithm earlier employed for DPillar. A secondary and important effect of our work is that it emphasises that data centre networks are amenable to a closer combinatorial scrutiny that can significantly improve their computational efficiency and performance.


Data centre networks Routing algorithms Shortest paths 



This work has been funded by the Engineering and Physical Sciences Research Council (EPSRC) through grants EP/K015680/1 and EP/K015699/1.


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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Alejandro Erickson
    • 1
    Email author
  • Abbas Eslami Kiasari
    • 2
  • Javier Navaridas
    • 2
  • Iain A. Stewart
    • 1
  1. 1.School of Engineering and Computing SciencesDurham University, Science LabsDurhamUK
  2. 2.School of Computer ScienceUniversity of ManchesterManchesterUK

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