RFC 1452 (rfc1452) - Page 3 of 17
Coexistence between version 1 and version 2 of the Internet-standard Network Management Framework
Alternative Format: Original Text Document
RFC 1452 Coexistence between SNMPv1 and SNMPv2 April 1993
2. Management Information
The SNMPv2 approach towards describing collections of managed
objects is nearly a proper superset of the approach defined in
the Internet-standard Network Management Framework. For
example, both approaches use ASN.1 [5] as the basis for a
formal descriptive notation. Indeed, one might note that the
SNMPv2 approach largely codifies the existing practice for
defining MIB modules, based on extensive experience with the
current framework.
The SNMPv2 documents which deal with information modules are:
Structure of Management Information for SNMPv2 [6], which
defines concise notations for describing information
modules, managed objects and notifications;
Textual Conventions for SNMPv2 [7], which defines a
concise notation for describing textual conventions, and
also defines some initial conventions; and,
Conformance Statements for SNMPv2 [8], which defines
concise notation for describing compliance and
capabilities statements.
The following sections consider the three areas: MIB modules,
compliance statements, and capabilities statements.
MIB modules defined using the current framework may continue
to be used with the SNMPv2 protocol. However, for the MIB
modules to conform to the SNMPv2 framework, the following
changes are required:
2.1. Object Definitions
In general, conversion of a MIB module does not require the
deprecation of the objects contained therein. Only if the
semantics of an object truly changes should deprecation be
performed.
(1) The IMPORTS statement must reference SNMPv2-SMI, instead
of RFC 1155-SMI and RFC-1212.
Case, McCloghrie, Rose & Waldbusser