Abstract
Variable-size IP packets are generally segmented into fixed-size cells for switching and scheduling in scalable input queueing switches. While switch bandwidth loss occurs when packets’ sizes are not integral times of the cell size, and the speedup of at least two is required to achieve full line rate. This paper proposes a framing approach called Bit Map Packet Framing (BMPF) to merge and segment IP packets efficiently. In BMPF, the partially filled cell can carry some bytes from the following packet. Thus switch bandwidth loss is avoided and the required speedup is greatly lowered to 1.17 . BMPF is superior to other conventional framing methods, such as PPP, HDLC and COBS. Furthermore, BMPF can be also deployed to merge IP packets in optical packet switches.
This work was supported by NSFC (No. 60173009 and No. 60373007), China 863 High-tech Plan (No. 2002AA103011-1 and No. 2003AA115110), China/Ireland Science and Technology Collaboration Research Fund (CI-2003-02) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (No. 20040003048).
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Li, W., Shi, L., Xu, Y., Liu, B. (2005). Efficient Approach to Merge and Segment IP Packets. In: Lu, X., Zhao, W. (eds) Networking and Mobile Computing. ICCNMC 2005. Lecture Notes in Computer Science, vol 3619. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11534310_109
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DOI: https://doi.org/10.1007/11534310_109
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