A Cross-architectural Quantitative Evaluation Of Mobility Approaches

Vasanta Chaganti University of Massachusetts, USA
Jim Kurose University of Massachusetts at Amherst, USA
Arun Venkataramani UMass Amherst, USA


Future Internet Architectures must support the rapid growth of traffic generated by mobile endpoints in a manner that is scalable and ensures low latency. We present a quantitative evaluation of three distinct approaches towards handling endpoint mobility: name-based forwarding, indirection and a global name service (GNS). Using a range of parameterized mobility distributions and real ISP topologies, we describe representative instantiations of each approach and evaluate their performance using four key metrics: update cost and update propagation cost in the control plane; and forwarding traffic cost and time-to-connect (TTC) in the data plane. (1) We show that by leveraging the fact that realistic endpoint mobility distributions show a high probability of being at a small subset of visited locations, name-based forwarding strategies can provide up to 60% improvement in control costs over simple best-port forwarding. (2) We show that the TTC in these name-based forwarding strategies is comparable to the TTC in the GNS. (3) Finally we show that a GNS-based approach offers the most suitable balance of total (combined data and control) cost to TTC across all approaches, all endpoint mobility distributions, and all ISP topologies considered.

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