http://www.rfc-editor.org/rfc/rfc1449.txt
RFC 1449: Transport Mappings 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 to define how the SNMPv2 maps onto an initial set of transport domains. [STANDARDS-TRACK]