Next Generation Structure of Management Information (sming)

Last Modified: 2002-10-28


David Durham <>

Operations and Management Area Director(s):

Randy Bush <>
Bert Wijnen <>

Operations and Management Area Advisor:

Bert Wijnen <>

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Description of Working Group:

This working group shall develop a standards-track specification for
the next generation data definition language for specifying network
management data.  As a starting point, the WG will use the SMIng
language developed in the IRTF Network Management Research Group.
SMIng represents a superset of the SMIv2 (Structure of Management
Information v2) and the SPPI (Structure of Policy Provisioning
Information).  The objective is to replace both the SMIv2 and the
SPPI with a single, merged language as the data definition language
for the monitoring, configuration, and provisioning of network

The language developed will enable the modeling of network
management  information in a manner that provides the benefits of
object-oriented design.  To achieve this, the language must allow
the design of highly reusable syntactic/semantic components
(templates) that can be reused by multiple IETF working groups for
convenience, consistency, and to maximize interoperability in device
management. A registration mechanism will also be described for
reusable components defined using the language so that their
existence and purpose may be archived.

The language will provide for the definition of a transport-independent
model so as to allow a variety of implementation-specific technologies
to be derived from a single definition.  To demonstrate this, the
working group will define two technology specific transport mappings:
one for SNMP, and one for COPS.

The language will also provide:

- syntax optimized for parseability, human readability, and

- conventions for representing inheritance and containment of
  defined data

- enhanced attribute-level and association-level constraints

- a maximal amount of machine-parseable syntax so that
  programmatic tools can aid in modeling and implementation

- a language extension capability

This working group will also define typical usage scenarios for
the language and highlight its features.  Finally, it will
develop  a framework by which reusable components specified
using this language can be registered and made readily
available for continued reuse and improvement.

The working group will not define models for specific
technologies, except as required for illustrative examples.
Specific models are to be developed by the subject matter
experts using the SMIng in the appropriate technology
specific WGs.

Goals and Milestones:

Done    IRTF documents complete & submitted to IETF
Done    Submit Revised I-Ds including requirements I-D
Done    Meet at 50th IETF
Done    Submit revised I-D for requirements document
Done    WG Last Call on requirements document as Informational RFC
Done    Submit revised I-D for Data Definition Language and Usage document
Done    Meet at 51st IETF
SEP 01    WG Last Call on Data Definition Language (syntax) documents as PS
SEP 01    WG Last Call on Usage document as Informational RFC
OCT 01    Revised I-D for Mapping documents for SNMP and COPS
NOV 01    WG Last Call on Mapping documents for SNMP and COPS as PS
NOV 01    Registrar framework defined for reusable components as an I-D
DEC 01    Meet at 52nd IETF
FEB 02    Last call on Registrar Framework document as Informational RFC
MAR 02    Meet at 53rd IETF
MAR 02    Working Group closes


SMIng - Next Generation Structure of Management Information (122329 bytes)
SMIng Internet Protocol Core Modules (27939 bytes)
SMIng Core Modules (26440 bytes)
SMIng Mappings to SNMP (123153 bytes)
SMIng Mappings to COPS-PR (58640 bytes)
SMIng Compliance (75117 bytes)
Structure of Management Information:Data Structures (118859 bytes)
Capabilities MIB (34540 bytes)

Request For Comments:

SMIng Requirements (RFC 3216)(58551 bytes)