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Erschienen in:
2008 | OriginalPaper | Buchkapitel
Concurrent Multipath Transfer Using SCTP Multihoming: Introducing the Potentially-Failed Destination State
verfasst von : Preethi Natarajan, Nasif Ekiz, Paul D. Amer, Janardhan R. Iyengar, Randall Stewart
Erschienen in: NETWORKING 2008 Ad Hoc and Sensor Networks, Wireless Networks, Next Generation Internet
Verlag: Springer Berlin Heidelberg
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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.