RFC 1248 (rfc1248) - Page 3 of 42

OSPF Version 2 Management Information Base

RFC 1248                   OSPF Version 2 MIB                  July 1991


   constructs which may be used.  These restrictions are explicitly made
   for simplicity.

   The encoding of an object type is simply how that object type is
   represented using the object type's syntax.  Implicitly tied to the
   notion of an object type's syntax and encoding is how the object type
   is represented when being transmitted on the network.

   The SMI specifies the use of the basic encoding rules of ASN.1 [8],
   subject to the additional requirements imposed by the SNMP.

3.1.  Format of Definitions

   Section 5 contains contains the specification of all object types
   contained in this MIB module.  The object types are defined using the
   conventions defined in the SMI, as amended by the extensions
   specified in [9].

4.  Overview

4.1.  Textual Conventions

   Several new data types are introduced as a textual convention in this
   MIB document.  These textual conventions enhance the readability of
   the specification and can ease comparison with other specifications
   if appropriate.  It should be noted that the introduction of the
   these textual conventions has no effect on either the syntax nor the
   semantics of any managed objects.  The use of these is merely an
   artifact of the explanatory method used.  Objects defined in terms of
   one of these methods are always encoded by means of the rules that
   define the primitive type.  Hence, no changes to the SMI or the SNMP
   are necessary to accommodate these textual conventions which are
   adopted merely for the convenience of readers and writers in pursuit
   of the elusive goal of clear, concise, and unambiguous MIB documents.

   The new data types are AreaID, RouterID, TOSType, Metric, BigMetric,
   TruthValue, Status, Validation, PositiveInteger, HelloRange,
   UpToMaxAge, InterfaceIndex, and DesignatedRouterPriority.

4.2.  Structure of MIB

   The MIB is composed of the following sections:

          General Variables
          Area Data Structure
          Area Stub Metric Table
          Link State Database
          Address Range Table



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