Summary
In this chapter, you learned that there are many ways to control routing update traffic, including passive interface, default routes, static routes, and route filtering. You also learned that redistribution (the capability for boundary routers connecting different autonomous systems to exchange and advertise routing information received from one autonomous system to the other autonomous system) enables you to exchange routing information between dissimilar routing protocols and requires some care when configuring.

In the next chapter, you learn how to connect an enterprise network to an Internet service provider (ISP).