Open Shortest Path First (OSPF) is an Interior Gateway Protocol (IGP) standardized by the Internet Engineering Task Force (IETF) and commonly used in large Enterprise networks. OSPF is a link-state routing protocol providing fast convergence and excellent scalability. Like all link-state protocols, OSPF is very efficient in its use of network bandwidth.
Cisco is an active member of the OSPF working group at the IETF, and is responsible for many of the ongoing enhancements to the protocol.
(All IP Routing Presentations)
Cisco IOS Software Release 12.2(18)SXD Routing Enhancements (PDF - 260 KB)
Deployment and Analysis of Link State Protocols (PDF - 2 MB)
Deployment and Analysis of Link State Protocols (PDF - 1 MB)
(All IP Routing White Papers)