http://www.rfc-editor.org/rfc/rfc1246.txt
RFC 1246: Experience with the OSPF Protocol, J. Moy1991-07-01T23:00:00-00:00This report documents experience with OSPF V2. This includes reports on interoperability testing, field experience, simulations and the current state of OSPF implementations. This memo provides information for the Internet community. It does not specify any Internet standard.