J4 ›› 2016, Vol. 38 ›› Issue (01): 67-72.
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HUANG Xiaopeng1,HUANG Chuanhe1,NONG Huangwu1,Yang Danfeng1,YANG Jinling2
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Abstract:
With the deployment of large scale software defined networks (SDNs), metrics used to monitor and measure network performance become increasingly important. Endtoend delay is an important part of the indicators, and a number of methods for endtoend delay calculation have been proposed. These methods can be divided into two groups:active detection and passive detection, each with advantages and disadvantages. We propose a method combining active and passive detections. We first calculate the first packet delay, and then calculate the difference of end-to-end delay between adjacent packets, thus obtaining all the end-to-end packet delay. Experimental results show that our approach achieves high calculation performance without clock synchronization.
Key words: software defined network(SDN);clock skew;clock synchronization;end-to-end delay;network simulation
HUANG Xiaopeng1,HUANG Chuanhe1,NONG Huangwu1,Yang Danfeng1,YANG Jinling2. End-to-end delay in software defined networks [J]. J4, 2016, 38(01): 67-72.
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http://joces.nudt.edu.cn/EN/Y2016/V38/I01/67