A New Look at Buffer Sizing for Core Routers

Han  Qiu; YuFeng Li; Peng  Yi; JiangXing Wu

1st International ICST Conference on Communications and Networking in China

Research Article

A New Look at Buffer Sizing for Core Routers

Cite: BibTeX Plain Text

@INPROCEEDINGS{10.1109/CHINACOM.2006.344862,
    author={Han  Qiu and YuFeng Li and Peng  Yi and JiangXing Wu},
    title={A New Look at Buffer Sizing for Core Routers},
    proceedings={1st International ICST Conference on Communications and Networking in China},
    publisher={IEEE},
    proceedings_a={CHINACOM},
    year={2007},
    month={4},
    keywords={buffer size core routers interaction queueing centre TCP},
    doi={10.1109/CHINACOM.2006.344862}
}

Han Qiu
YuFeng Li
Peng Yi
JiangXing Wu
Year: 2007
A New Look at Buffer Sizing for Core Routers
CHINACOM
IEEE
DOI: 10.1109/CHINACOM.2006.344862

Han Qiu^1,2^,*, YuFeng Li^1,2^,*, Peng Yi^1,2^,*, JiangXing Wu^1,2^,*

1: National Digital Switching System Engineering & Technological R&D Center
2: No.7 Jianxue St., Wenhua Rd., Zhengzhou 450002, P. R. China

*Contact email: qh@mail.ndsc.com.cn, lyf@mail.ndsc.com.cn, yp@mail.ndsc.com.cn, wjx@mail.ndsc.com.cn

Abstract

Currently, all analyses on the buffer size of routers are based on a single router model of TCP connections and then the results are applied to any core router. As we know, a TCP link may be made up of one router or several routers, and the latter is more popular in the practical networks. Can we apply the conclusions directly to any router in the network? How the routers interact in the network and how can we design the routers practically? We found a queueing model for the routers on a TCP link, explore the interaction of routers, and discover that the link utilization is dependent on the number of routers and their buffer size. By boundary value analysis of the buffer size, we show that our formula can commendably predict the buffer size of routers under low offered load and the impact of interaction between routers is weak under light offered load.

Keywords: buffer size core routers interaction queueing centre TCP

Published: 2007-04-10
Publisher: IEEE

: http://dx.doi.org/10.1109/CHINACOM.2006.344862