TITLE

Economics Of QOS On WAN Access Lines

AUTHOR(S)
Bartlett, John; Sevcik, Peter; Moore, Sean
PUB. DATE
October 2004
SOURCE
Business Communications Review;Oct2004, Vol. 34 Issue 10, p16
SOURCE TYPE
Trade Publication
DOC. TYPE
Article
ABSTRACT
This article focuses on real-time traffic, Internet performance and quality of service techniques. Supporting critical data, voice and video applications requires an IP network that will transport information with minimal packet loss and delay. Conventional network wisdom tells that to achieve low loss and delay, one needs to keep utilization low, often below 35 percent. Conventional financial wisdom, how ever, tells that to keep expenses low, one needs to fully utilize our network assets. So what does this tradeoff really look like, and how can one pick an operating point-that is, a percentage of link utilization that simultaneously meets the performance and the financial goals of the business? In the following analysis, we answer this question, finding that packet loss rates dictate the maximum link utilization that can be achieved. To make proper use of these findings will take the enterprise network planner several steps beyond merely selecting the appropriate packet loss rates for the service level agreement with the carrier. INSET: How To Work Out An End--To--End SLA.
ACCESSION #
14728224

 

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