Definitions of Managed Objects for Network Time Protocol Version 4 (NTPv4)
RFC 5907

Internet Engineering Task Force (IETF)                       H. Gerstung
Request for Comments: 5907                                      Meinberg
Category: Standards Track                                     C. Elliott
ISSN: 2070-1721
                                                        B. Haberman, Ed.
                                                                 JHU APL
                                                               June 2010

                   Definitions of Managed Objects for
                Network Time Protocol Version 4 (NTPv4)

Abstract

   The Network Time Protocol (NTP) is used in networks of all types and
   sizes for time synchronization of servers, workstations, and other
   networked equipment.  As time synchronization is more and more a
   mission-critical service, standardized means for monitoring and
   management of this subsystem of a networked host are required to
   allow operators of such a service to set up a monitoring system that
   is platform- and vendor-independent.  This document provides a
   standardized collection of data objects for monitoring the NTP entity
   of such a network participant and it is part of the NTP version 4
   standardization effort.

5Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc5907.

Gerstung, et al.             Standards Track                    [Page 1]
RFC 5907        Definitions of Managed Objects for NTPv4       June 2010

Copyright Notice

   Copyright (c) 2010 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1. Introduction ....................................................2
   2. Conventions Used in This Document ...............................3
   3. The Internet-Standard Management Framework ......................3
   4. Technical Description ...........................................3
   5. MIB Definition ..................................................4
   6. IANA Considerations ............................................23
   7. Security Considerations ........................................23
   8. Acknowledgments ................................................24
   9. References .....................................................24
      9.1. Normative References ......................................24
      9.2. Informative References ....................................2

1.  Introduction

   The NTPv4 MIB module is designed to allow Simple Network Management
   Protocol (SNMP) to be used to monitor and manage local NTP [RFC5905]
   entities.  It provides a collection of data objects that can be
   queried using the SNMP protocol and represent the current status of
   the NTP entity.  This includes general information about the NTP
   entity itself (vendor, product, version) as well as connectivity to
   upstream NTP servers used as sources of reference time and to
   hardware reference clocks like radio clocks.  The most important
   values are included in order to be able to detect failures before
   they can have an impact on the overall time synchronization status of
   the network.  There are also a collection of notification objects to
   inform about state changes in the NTP entity.  There are objects to
   control these notifications as well.

Gerstung, et al.             Standards Track                    [Page 2]
RFC 5907        Definitions of Managed Objects for NTPv4       June 2010

2.  Conventions Used in This Document

   The capitalized key words "MUST", "MUST NOT", "REQUIRED", "SHALL",
   "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and