New delay measurement method based on accurate timestamp in OpenFlow |
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Authors: | Xin-yi QIU Jun LI Jian-er ZHOU Jing-jing LI |
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Institution: | 1. Computer Network Information Center,Chinese Academy of Sciences,Beijing 100190,China;2. University of Chinese Academy of Sciences,Beijing 100049,China |
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Abstract: | At present,delay measurement methods in OpenFlow network have the disadvantage of excessive network resources and poor measurement accuracy.DeMon,an active mechanism to measure the delay of multiple paths between any two switch based on the controllable feature of individual traffic flow provided in OpenFlow was proposed.DeMon required only one probe packet to be send from controller,which was excepted to reduce the operational cost.Moreover,DeMon used OpenFlow switch instead of controller to get the timestamp of probe packet,making the measurement accuracy and stability have been greatly improved compared with other monitoring techniques in the OpenFlow network. |
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Keywords: | OpenFlow software defined network latency monitoring timestamp |
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