http://www.rfc-editor.org/rfc/rfc1448.txt
RFC 1448: Protocol Operations for version 2 of the Simple Network Management Protocol (SNMPv2), J. Case, K. McCloghrie, M. Rose, S. Waldbusser1993-04-01T23:00:00-00:00It is the purpose of this document, Protocol Operations for SNMPv2, to define the operations of the protocol with respect to the sending and receiving of the PDUs. [STANDARDS-TRACK]