|  |  | Summary
In this chapter, you learned that: Internetworking functions of the network layer include network addressing and best path selection for traffic. In network addressing, one part of the address is used to identify the path used by the router and the other is used for ports or devices on the network. Routed protocols allow routers to direct user traffic; routing protocols work between routers to maintain routing tables. Network discovery for distance-vector routing involves exchange of routing tables; problems can include slow convergence. For link-state routing, routers calculate the shortest paths to other routers; problems can include inconsistent updates. Balanced hybrid routing uses attributes of both link-state and distance-vector routing.