Management Information Base for network management of TCP/IP-based internets: MIB-II
RFC 1158

Document Type RFC - Proposed Standard (May 1990; Errata)
Obsoleted by RFC 1213
Last updated 2013-03-02
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Network Working Group                                   M. Rose, Editor
Request for Comments: 1158            Performance Systems International
                                                               May 1990

           Management Information Base for Network Management
                       of TCP/IP-based internets:
                                 MIB-II

1.  Status of this Memo

   This memo defines the second version of the Management Information
   Base (MIB-II) for use with network management protocols in TCP/IP-
   based internets.  In particular, together with its companion memos
   which describe the structure of management information (RFC 1155)
   along with the network management protocol (RFC 1157) for TCP/IP-
   based internets, these documents provide a simple, workable
   architecture and system for managing TCP/IP-based internets and in
   particular the Internet community.

   This document on MIB-II incorporates all of the technical content of
   RFC 1156 on MIB-I and extends it, without loss of compatibilty.
   However, MIB-I as described in RFC 1156 is full Standard Protocol of
   the Internet, while the MIB-II described here is Proposed Standard
   Protocol of the Internet.

   This memo defines a mandatory extension to the base MIB (RFC 1156)
   and is a Proposed Standard for the Internet community.  The
   extensions described here are currently Elective, but when they
   become a standard, they will have the same status as RFC 1156, that
   is, Recommended.  The Internet Activities Board recommends that all
   IP and TCP implementations be network manageable.  This implies
   implementation of the Internet MIB (RFC 1156 and the extensions in
   RFC 1158) and at least one of the two recommended management
   protocols SNMP (RFC 1157) or CMOT (RFC 1095).

   This version of the MIB specification, MIB-II, is an incremental
   refinement of MIB-I.  As such, it has been designed according to two
   criteria: first, changes have been made in response to new
   operational requirements in the Internet; and, second, the changes
   are entirely upwards compatible in order to minimize impact on the
   network as the managed nodes in the Internet transition from MIB-I to
   MIB-II.

   It is expected that additional MIB groups and variables will be
   defined over time to accommodate the monitoring and control needs of
   new or changing components of the Internet.

IETF SNMP Working Group                                         [Page 1]
RFC 1158                         MIB II                         May 1990

   Please refer to the latest edition of the "IAB Official Protocol
   Standards" RFC for current information on the state and status of
   standard Internet protocols.

   Distribution of this memo is unlimited.

                             Table of Contents

   1. Status of this Memo ..................................    1
   2. Introduction .........................................    3
   3. Changes from MIB-I ...................................    4
   3.1 Deprecated Objects ..................................    4
   3.2 Display Strings .....................................    5
   3.3 The System Group ....................................    5
   3.4 The Interfaces Group ................................    5
   3.5 The Address Translation Group .......................    6
   3.6 The IP Group ........................................    7
   3.7 The ICMP Group ......................................    7
   3.8 The TCP Group .......................................    7
   3.9 The UDP Group .......................................    7
   3.10 The EGP Group ......................................    8
   3.11 The Transmission Group .............................    8
   3.12 The SNMP Group .....................................    8
   4. Objects ..............................................    8
   4.1 Object Groups .......................................    9
   4.2 Format of Definitions ...............................   10
   5. Object Definitions ...................................   10
   5.1 The System Group ....................................   11
   5.2 The Interfaces Group ................................   14
   5.2.1 The Interfaces table ..............................   15
   5.3 The Address Translation Group .......................   27
   5.4 The IP Group ........................................   30
   5.4.1 The IP Address table ..............................   38
   5.4.2 The IP Routing table ..............................   41
   5.4.3 The IP Address Translation table ..................   48
   5.5 The ICMP Group ......................................   51
   5.6 The TCP Group .......................................   61
   5.6.1 The TCP Connection table ..........................   66
   5.6.2 Additional TCP Objects ............................   69
   5.7 The UDP Group .......................................   70
   5.7.1 The UDP Listener table ............................   72
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