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Statistical analysis of network traffic for class of service in packet-switched networks

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2 Author(s)
Shaneyfelt, B.E. ; AT&T, Denver, CO, USA ; Tsong-Ho Wu

The goals of the class-of-service (COS) routing concept in packet-switched networks are to meet user requirements and to maximize network resource utilization. A statistical analysis model is proposed to analyze network traffic using all recorded data to determine what COSs are present and their associated bandwidth and delay requirements. The UNINET call-record database is used to demonstrate the COS concept. The experimental results show that the traffic patterns defined by COS exist. The bandwidth distribution for 300-b/s call is approximately normal. However, bandwidth distributions for calls equal to or greater than 1200 b/s are exponential, indicating that bandwidth is not a very predictable parameter for these speeds. Lower speeds tend to have a low input bandwidth and slightly higher output bandwidth

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Selected Areas in Communications, IEEE Journal on  (Volume:6 ,  Issue: 4 )