http://www.rfc-editor.org/rfc/rfc4022.txt
RFC 4022: Management Information Base for the Transmission Control Protocol (TCP), R. Raghunarayan2005-03-01T23:00:00-00:00This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, it describes managed objects used for implementations of the Transmission Control Protocol (TCP) in an IP version independent manner. This memo obsoletes RFCs 2452 and 2012. [STANDARDS-TRACK]