Chapter 4. OSPF Network Design
Open Shortest Path First (OSPF) is one of the most widely deployed routing protocols in networks worldwide, stretching across markets from service provider, to Enterprise, to various government organizations. OSPF was standardized by the Internet Engineering Task Force (IETF) as RFC 1131 and then updated through a series of RFCs:
• RFC 1247 in 1991
• RFC 1583 in 1994
• RFC 2178 in 1997
• RFC 2328 in 1998 (most recent)
A series of RFCs describes options and additional capabilities added to the protocols since its original specification, including RFC 3101, “The OSPF Not-So-Stubby Area (NSSA) Option.”
Note
For more information on OSPF operation, see Appendix B, “OSPF Basics of Operation,” and Routing TCP/IP Volume ...
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