Chapter 16

Measuring Network Traffic

Not everything that is counted counts, and not everything that counts can be counted.

— ALBERT EINSTEIN

Every graduate with a business degree knows that the task of optimizing an organization or process begins with measurement. Once the bottlenecks in a supply chain are identified and the major cost factors are outlined, improvements can be targeted. The situation is no different in computer networks. For example, in service provider networks, packet counting and logging provide powerful tools for the following.

Capacity Planning: Internet service providers (ISPs) need to determine the traffic matrix, or the traffic between all source and destination subnets they connect. This knowledge can be used on short time ...

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