Types

Dynamic routing protocols can be divided into two main categories:

• IGP (Interior Gateway Protocol)

  • Used to share routes within a single autonomous system (AS), which is a single organization (ie. a company).

• EGP (Exterior Gateway Protocol)

  • Used to share routes between different autonomous systems.

Algorithm type

Routing type	Algorithm type	Protocol
IGP	Distance Vector	Routing Information Protocol (RIP)
		Enhanced Interior Gateway Routing Protocol (EIGRP)
	Link State	Open Shortest Path First (OSPF)
		Intermediate System to Intermediate System (IS-IS)
EGP	Path Vector	Border Gateway Protocol (BGP)