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Performance modeling of HS-RR-TCP over load-balanced optical burst-switched (OBS) networks.
- Source :
- Optical Switching & Networking; Apr2011, Vol. 8 Issue 2, p116-128, 13p
- Publication Year :
- 2011
-
Abstract
- Abstract: TCP-over-OBS is a promising transport paradigm to support next-generation Internet. It is well known that load-balanced routing generally improves loss performance over OBS. We identify that implementing TCP over load-balanced OBS could lead to persistent out-of-order delivery of TCP segments, resulting in unnecessary timeouts and fast retransmissions. In this paper we evaluate the performance of Reordering-Robust TCP (RR-TCP) over OBS networks. We develop an analytical end-to-end transfer delay model for TCP SACK and RR-TCP over load-balanced OBS networks. We observe that standard TCP experiences significant throughput degradation due to persistent packet reordering. Through simulations and modeling we show that RR-TCP achieves significant improvement compared to TCP SACK. In our simulations we add High-Speed TCP functionality to RR-TCP (HS-RR-TCP). The simulations show up to a 300% performance improvement for HS-RR-TCP compared to HS-TCP-SACK under ideal conditions and a 20% improvement on NSFnet with background traffic. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15734277
- Volume :
- 8
- Issue :
- 2
- Database :
- Supplemental Index
- Journal :
- Optical Switching & Networking
- Publication Type :
- Academic Journal
- Accession number :
- 57372173
- Full Text :
- https://doi.org/10.1016/j.osn.2010.10.002