Chapter 12. Open Shortest Path First
As the 1980s drew to a close, the fundamental limitations of distance-vector routing were becoming increasingly apparent. One attempt to improve the scalability of networks was to base routing decisions on link states rather than hop count or other distance vectors. A link is the connection between two routers in a network. The status of that link can include such attributes as its transmission speed and delay levels.
This chapter provides an in-depth look at the Internet Engineering Task Force's (IETF's) version of a link-state, interior gateway routing protocol: Open Shortest Path First (OSPF). OSPF was first specified in RFC 1131. This short-lived specification was quickly made obsolete by RFC 1247. The ...
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