Advanced version of IGRP developed by Cisco. Provides superior convergence properties and operating efficiency, and combines the advantages of link state protocols with those of distance vector protocols. OSPF features include least-cost routing, multipath routing, and load balancing. OSPF was derived from an early version of the ISIS protocol. This capability allows a router to deliver packets from several routed protocols such as IP and IPX over the same data links.
Static routes take precedence over routes chosen by dynamic routing protocols.
Use a protocol route that a network administrator enters into the router. Useful for controlling security and reducing traffic. Also called adaptive routing. Uses a route that a network routing protocol adjusts automatically for topology or traffic changes. Delay - Length of time required to move a packet from source to destination.