http://www.rfc-editor.org/rfc/rfc1228.txt
RFC 1228: SNMP-DPI: Simple Network Management Protocol Distributed Program Interface, G. Carpenter, B. Wijnen1991-05-01T23:00:00-00:00This RFC describes a protocol that International Business Machines Corporation (IBM) has been implementing in most of its SNMP agents to allow dynamic extension of supported MIBs. This is an Experimental Protocol for the Internet community. It does not specify an Internet standard.