Chapter 13. Routing Choices
In the early days of networking, huge projects were undertaken to determine the best routing protocol—for some definition of “best.” For instance, one project commissioned by the US Air Force attempted to measure the speed of convergence for each of the primary routing protocols (OSPF, IS-IS, and EIGRP), how much bandwidth each protocol used under normal operation, how much bandwidth was required when the protocol was converging (given a specific network topology and breakage scenarios), how many network engineers knew each of the protocols under investigation, and a number of other factors. Ultimately, the project was designed to churn all these factors together and produce a single answer.
Underlying all these calculations ...
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