Abstract
Previously, we identified the failure-induced receive buffer (rbuf) blocking problem in Concurrent Multipath Transfer using SCTP multihoming (CMT), and proposed CMT with a Potentially-failed destination state (CMT-PF) to alleviate rbuf blocking. In this paper, we complete our evaluation of CMT vs. CMT-PF. Using ns-2 simulations we show that CMT-PF performs on par or better than CMT during more aggressive failure detection thresholds than recommended by RFC4960. We also examine whether the modified sender behavior in CMT-PF degrades performance during non-failure scenarios. Our evaluations consider: (i) realistic loss model with symmetric and asymmetric path loss, (ii) varying path RTTs. We find that CMT-PF performs as well as CMT during non-failure scenarios, and interestingly, outperforms CMT when the paths experience asymmetric rbuf blocking conditions. We recommend that CMT be replaced by CMT-PF in future CMT implementations and RFCs.
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Natarajan, P., Ekiz, N., Amer, P.D., Iyengar, J.R., Stewart, R. (2008). Concurrent Multipath Transfer Using SCTP Multihoming: Introducing the Potentially-Failed Destination State. In: Das, A., Pung, H.K., Lee, F.B.S., Wong, L.W.C. (eds) NETWORKING 2008 Ad Hoc and Sensor Networks, Wireless Networks, Next Generation Internet. NETWORKING 2008. Lecture Notes in Computer Science, vol 4982. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-79549-0_63
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DOI: https://doi.org/10.1007/978-3-540-79549-0_63
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