ue 16(10): e2

Research Article

Capacity bounds and robustness in multipath networks

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  • @ARTICLE{10.4108/eai.14-12-2015.2262625,
        author={Andrei Bejan and Richard Gibbens and Robert Hancock and Don Towsley},
        title={Capacity bounds and robustness in multipath networks},
        journal={EAI Endorsed Transactions on Future Internet},
        keywords={mutlipath, capacity bounds, performance analysis},
  • Andrei Bejan
    Richard Gibbens
    Robert Hancock
    Don Towsley
    Year: 2016
    Capacity bounds and robustness in multipath networks
    DOI: 10.4108/eai.14-12-2015.2262625
Andrei Bejan1, Richard Gibbens2,*, Robert Hancock3, Don Towsley4
  • 1: Smith Institute
  • 2: Computer Laboratory, University of Cambridge
  • 3: Roke Manor Research
  • 4: UMass
*Contact email: richard.gibbens@cl.cam.ac.uk


The recent developments of multipath data transport protocols such as Multipath TCP allow end-systems to explore and share available resources within networks. Through dynamic load balancing over subflows these protocols ensure high levels of robustness to network failures and traffic overloads. In this paper we use fluid models to study the benefits that accrue when load is shared across subflows. We combine insights gained from the fluid models with a precise description of the capacity region for the network and show that our models of multipath protocols approach the boundary of the capacity region as the intensity of the offered traffic approaches a critical value. We quantify the extent to which multipath protocols will make a network robust to unforeseen traffic mismatches and link failures and illustrate our results with parameterised models for random fluctuations in the offered traffic.