MIB (Management Information Base) is a formal description of a set of network objects that can be managed using [SNMP] (Simple Network Management Protocol). There is one MIB and one MIB only. Everything else, normally referred to as "MIBs", is MIB extensions. The current MIB definition is MIB-II as described in RFC1213
[http://www.ietf.org/rfc/rfc1213.txt].