Definitions of managed objects for the DS3 Interface type
RFC 1233

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Network Working Group                                            T. Cox
Request for Comments: 1233                                    K. Tesink
                                           Bell Communications Research
                                                                Editors
                                                               May 1991

                     Definitions of Managed Objects
                       for the DS3 Interface Type

Status of this Memo

   This memo defines objects for managing DS3 Interface objects for use
   with the SNMP protocol.  This memo is a product of the SNMP and
   Transmission MIB Working Group of the Internet Engineering Task Force
   (IETF).  This RFC specifies an IAB standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "IAB
   Official Protocol Standards" for the standardization state and status
   of this protocol.  Distribution of this memo is unlimited.

Table of Contents

   1. Abstract ..............................................    1
   2. The Network Management Framework.......................    2
   3. Objects ...............................................    2
   3.1 Format of Definitions ................................    3
   4. Overview ..............................................    3
   4.1 Binding between Interfaces and CSUs ..................    3
   4.2 Objectives of this MIB Module ........................    3
   4.3 DS3 Terminology ......................................    3
   5. Object Definitions ....................................    5
   5.1 The DS3 Configuration Group ..........................    6
   5.2 The DS3 Interval Group ...............................   11
   5.3 The DS3 Current Group ................................   14
   5.4 The DS3 Total Group ..................................   17
   6. Acknowledgments .......................................   20
   7. References ............................................   22
   8. Security Considerations................................   23
   9. Authors' Addresses.....................................   23

1.  Abstract

   This memo defines an experimental portion of the Management
   Information Base (MIB) for use with network management protocols in
   TCP/IP-based internets.  In particular, this memo defines MIB objects
   for representing DS3 physical interfaces.  Implementors should
   consult in addition to this memo the companion document that

SNMP & Transmission MIB Working Groups                          [Page 1]
RFC 1233                 DS3 Interface Objects                  May 1991

   describes that DS1 managed objects.

2.  The Network Management Framework

   The Internet-standard Network Management Framework consists of three
   components.  They are:

      RFC 1155 which defines the SMI, the mechanisms used for describing
      and naming objects for the purpose of management.  RFC 1212
      defines a more concise description mechanism, which is wholly
      consistent with the SMI.

      RFC 1156 which defines MIB-I, the core set of managed objects for
      the Internet suite of protocols.  RFC 1213, defines MIB-II, an
      evolution of MIB-I based on implementation experience and new
      operational requirements.

      RFC 1157 which defines the SNMP, the protocol used for network
      access to managed objects.

   The Framework permits new objects to be defined for the purpose of
   experimentation and evaluation.

3.  Objects

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  Objects in the MIB are
   defined using the subset of Abstract Syntax Notation One (ASN.1) [7]
   defined in the SMI.  In particular, each object has a name, a syntax,
   and an encoding.  The name is an object identifier, an
   administratively assigned name, which specifies an object type.  The
   object type together with an object instance serves to uniquely
   identify a specific instantiation of the object.  For human
   convenience, we often use a textual string, termed the OBJECT
   DESCRIPTOR, to also refer to the object type.

   The syntax of an object type defines the abstract data structure
   corresponding to that object type.  The ASN.1 language is used for
   this purpose.  However, the SMI [3] purposely restricts the ASN.1
   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.

SNMP & Transmission MIB Working Groups                          [Page 2]