14 Routing
Chapter 13 provided a short introduction to IP packet forwarding. In this chapter, we examine the forwarding process in more detail and investigate several network protocols that allow routers to discover efficient routes automatically. Routing protocols not only lessen the day-to-day administrative burden of maintaining routing information, but they also allow network traffic to be redirected quickly if a router or network should fail.
It’s important to distinguish between the process of actually forwarding IP packets and the management of the routing table that drives this process, both of which are commonly called “routing.” ...
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