Routing Information Protocol (RIP)
Distance Vector,
Router Hops,
Classless (v2 or newer)
Open Shortest Path First (OSPF)
Link State,
Bandwidth and Delay,
Classless
Intermediate System to Intermediate System (IS-IS)
Link State,
Bandwidth and Delay,
Classless
Enhanced Interior Gateway Routing Protocol (EIGRP)
Advanced Distance Vector,
Bandwidth, Delay, Load and Reliability,
Classless,
Cisco Proprietary
Border Gateway Protocol (BGP)
Path Vector,
System Hops