📄 rfc1189.txt
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Network Working Working Group U. Warrier
Request for Comments: 1189 Netlabs
Obsoletes: RFC 1095 L. Besaw
Hewlett-Packard
L. LaBarre
The Mitre Corporation
B. Handspicker
Digital Equipment Corporation
October 1990
The Common Management Information Services
and Protocols for the Internet
(CMOT and CMIP)
Status of this Memo
This memo defines a network management architecture that uses the
International Organization for Standardization's (ISO) Common
Management Information Services/Common Management Information
Protocol (CMIS/CMIP) in the Internet. 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. Overview ................................................... 2
2. Introduction ............................................... 3
3. Protocol Overview .......................................... 4
3.1. The CMOT Protocol Suite .................................. 5
3.2. The CMIP Protocol Suite .................................. 6
3.3. Conformance Requirements ................................. 6
4. Common Management Information Service Element .............. 7
4.1. Association Policies ..................................... 7
4.2. CMIS Services ............................................ 9
4.2.1 General Agreements on Users of CMIS ..................... 9
4.2.2 Specific Agreements on Users of CMIS .................... 10
4.3. CMIP Agreements .......................................... 10
5. Services Required by CMIP .................................. 10
6. Acknowledgements ........................................... 11
7. References ................................................. 11
8. Security Considerations..................................... 14
9. Authors' Addresses.......................................... 14
Warrier, Besaw, LaBarre & Handspicker [Page 1]
RFC 1189 CMOT and CMIP October 1990
1. Overview
This memo is a revision of RFC 1095 - "The Common Management
Information Services and Protocol over TCP/IP" [27]. It defines a
network management architecture that uses the International
Organization for Standardization's (ISO) Common Management
Information Services/Common Management Information Protocol
(CMIS/CMIP) in the Internet. This architecture provides a means by
which control and monitoring information can be exchanged between a
manager and a remote network element. In particular, this memo
defines the means for implementing the International Standard (IS)
version of CMIS/CMIP on top of both IP-based and OSI-based Internet
transport protocols for the purpose of carrying management
information defined in the Internet-standard management information
base. Together with the relevant ISO standards and the companion
RFCs that describe the initial structure of management information
and management information base, these documents provide the basis
for a comprehensive architecture and system for managing both IP-
based and OSI-based internets, and in particular the Internet.
In creating this revision of RFC 1095, the following technical and
editorial changes were made:
1) The tutorial section on OSI Management included in RFC 1095
has been removed from this document. After some revisions,
the tutorial material may be published as another RFC.
2) The sections in RFC 1095 which discussed the semantics of how
to interpret requests in the context of Internet MIBs has been
removed from this protocol document. This topic is now
discussed in the OIM-MIB-II draft document. This protocol
should be useable with MIB-I or MIB-II. But, it will also be
able to exploit the new features of the OIM-MIB-II.
3) This document is based on the final International Standards
for CMIS/CMIP (ISO 9595/9596) rather than the Draft
International Standards.
4) Many of the original agreements defined in RFC 1095 have been
accepted and included in the OIW NMSIG implementers agreements.
Rather than duplicating these agreements, they have been removed
from this memo. This document should be read in conjunction
with ISO 9595/9596 (CMIS/CMIP) and the OIW Stable Agreements
document.
5) The Association Negotiation describe in RFC 1095 has been
changed to align with current international and national
agreements. But, it has retained backwards compatibility with
Warrier, Besaw, LaBarre & Handspicker [Page 2]
RFC 1189 CMOT and CMIP October 1990
the assignment of an Application Context Name which is identical
to the Application Context Name specified in RFC 1095.
2. Introduction
This memo is the output of the OSI Internet Management Working Group
of the Internet Engineering Task Force (IETF). As directed by the
Internet Activites Board (IAB) in RFC 1052, it addresses the need for
a long-term network management system based on ISO CMIS/CMIP. This
memo contains a set of protocol agreements for implementing a network
management system based on these ISO Management standards. Now that
CMIS/CMIP has been voted an International Standard (IS), it has
become a stable basis for product development. This profile
specifies how to apply CMIP to management of both IP-based and OSI-
based Internet networks. Network management using ISO CMIP to manage
IP-based networks will be refered to as "CMIP Over TCP/IP" (CMOT).
Network management using ISO CMIP to manage OSI-based networks will
be refered to as "CMIP". This memo specifies the protocol agreements
necessary to implement CMIP and accompanying ISO protocols over OSI,
TCP and UDP transport protocols.
This memo must be read in conjunction with ISO and Internet documents
defining specific protocol standards. Documents defining the
following ISO standards are required for the implementor: Abstract
Syntax Notation One (ASN.1) [5, 6], Association Control (ACSE) [7,
8], Remote Operations (ROSE) [9, 10], Common Management Information
Services (CMIS) [11] and Common Management Information Protocol
(CMIP) [12] with their addenda [32-35]. The specification of a
lightweight presentation layer protocol is required for use with the
CMOT section of this profile (see RFC 1085 [13]). The SMI (see RFC
1065 [2]), the MIB-I (see RFC 1066 [3]), the MIB-II (see RFC 1156
[28]), and the OIM-MIB-II (see [29]) are used with this management
system.
This memo is divided into sections for each of the protocols for
which implementors' agreements are needed: CMISE, ACSE, ROSE, and,
for CMOT, the lightweight presentation protocol. The protocol
profile defined in this memo draws on the technical work of the OSI
Network Management Forum [14] and the Network Management Special
Interest Group (NMSIG) of the National Institute of Standards and
Technology (NIST) (formerly the National Bureau of Standards) [30].
Wherever possible, an attempt has been made to either directly
reference or remain consistent with the protocol agreements reached
by these groups.
Warrier, Besaw, LaBarre & Handspicker [Page 3]
RFC 1189 CMOT and CMIP October 1990
3. Protocol Overview
This part of the document is a specification of the protocols of the
OIM architecture. Contained herein are the agreements required to
implement interoperable network management systems using these
protocols. The protocol suite defined by these implementors'
agreements will facilitate communication between equipment of
different vendors, suppliers, and networks. This will allow the
emergence of powerful multivendor network management based on ISO
models and protocols.
The choice of a set of protocol standards together with further
agreements needed to implement those standards is commonly referred
to as a "profile." The selection policy for this profile is to use
existing standards from the international standards community (ISO
and CCITT) and the Internet community. Existing ISO standards and
draft standards in the area of OSI network management form the basis
of this profile. Other ISO application layer standards (ROSE and
ACSE) are used to support the ISO management protocol (CMIP). To
ensure interoperability, certain choices and restrictions are made
here concerning various options and parameters provided by these
standards. Internet standards are used to provide the underlying
network transport. These agreements provide a precise statement of
the implementation choices made for implementing ISO network
management standards in IP-based and OSI-based internets.
In addition to the OIM working group, there are at least two other
bodies actively engaged in defining profiles for interoperable OSI
network management: the OSI Implementors Workshop (OIW) and the OSI
Network Management Forum. Both of these groups are similar to the
OIM working group in that they are each defining profiles for using
ISO standards for network management. Both differ in that they are
specifying the use only of underlying ISO protocols, while the OIM
working group is concerned with using OSI management in both OSI and
TCP/IP networks. In the interest of greater future compatibility,
the OIM working group has attempted to make this profile conform as
closely as possible to the ongoing work of these two bodies.
This section will describe the CMOT Protocol Suite, the CMIP Protocol
Suite and Conformance Requirements common to both CMOT and CMIP.
Later sections will specify the implementers agreements for specific
layer protocols that comprise the CMOT and CMIP Protocol Suites.
Warrier, Besaw, LaBarre & Handspicker [Page 4]
RFC 1189 CMOT and CMIP October 1990
3.1. The CMOT Protocol Suite
The following seven protocols compose the CMOT protocol suite: ISO
ACSE, ISO DIS ROSE, ISO CMIP, the lightweight presentation protocol
(LPP), UDP, TCP, and IP. The relation of these protocols to each
other is briefly summarized in Figure 2.
+----------------------------------------------+
Management Application Processes
+----------------------------------------------+
+-------------------+
CMISE
ISO 9595/9596
+-------------------+
+------------------+ +--------------------+
ACSE ROSE
ISO IS 8649/8650 ISO DIS 9072-1/2
+------------------+ +--------------------+
+-----------------------------------------------+
Lightweight Presentation Protocol (LPP)
RFC 1085
+-----------------------------------------------+
+------------------+ +--------------------+
TCP UDP
RFC 793 RFC 768
+------------------+ +--------------------+
+-----------------------------------------------+
IP
RFC 791
+-----------------------------------------------+
Figure 2. The CMOT Protocol Suite
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