Packet delay analysis in operational network

Based on the previous work carried out on experimental validation of theory on fundamental bounds in communication network by J Y Le Boudec and Patrick Thiran in the context of networked control systems, steps are taken to define an algorithm enabling to automatically associate a time constraint requirement with a priority level and a weighted value. More advanced optimization algorithms are also studied for the determination of the weights. A test bed scenario is created on existing automation system. End to end packet delay for different flows and Jitters for the periodic flow is calculated on master server using packet sniffer “Wireshark” while backlog and packet loss of the switch port using Switch Port Analysis (SPAN) and Packet Flow/ SNMP Results obtyained are recorded and compared with that of analytical model of WRR for tuning to tighten the bounds

[1]  Nikolay Kakanakov,et al.  Time-delay simulation analysis of local controller networks , 2008, CompSysTech.

[2]  Abhay Parekh,et al.  A generalized processor sharing approach to flow control in integrated services networks: the single-node case , 1993, TNET.

[3]  Eric Rondeau,et al.  Accommodation of delays for networked control systems using classification of service , 2007, 2007 IEEE International Conference on Networking, Sensing and Control.

[4]  Qizhi Zhang,et al.  Priority scheduling in switched industrial Ethernet , 2005, Proceedings of the 2005, American Control Conference, 2005..

[5]  Kym Watson,et al.  Determining end-to-end delays using network calculus , 2003 .

[6]  Rene L. Cruz,et al.  Quality of Service Guarantees in Virtual Circuit Switched Networks , 1995, IEEE J. Sel. Areas Commun..

[7]  Patrick Thiran,et al.  A short tutorial on network calculus. I. Fundamental bounds in communication networks , 2000, 2000 IEEE International Symposium on Circuits and Systems. Emerging Technologies for the 21st Century. Proceedings (IEEE Cat No.00CH36353).

[8]  Nsf Ncr,et al.  A Generalized Processor Sharing Approach to Flow Control in Integrated Services Networks: The Single Node Case* , 1991 .