Chapter 16: Measuring network traffic
Not everything that is counted counts, and not everything that counts can be counted.
—Albert Einstein
Abstract
The goal of this chapter is to argue that measurement at high speeds is difficult because of resource limitations and lack of built-in support; that the problems will only grow worse as ISPs abandon their current generation of links for even faster ones; and that algorithmics can provide exciting alternatives to the measurement quandary by focusing on how measurements will ultimately be used. To develop this theme, it is worth understanding right away why the general problem of measurement is hard and why even the specific problem of packet counting can be difficult.
This chapter is organized as follows. ...
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