Network Management Expertise –

TMN Information Models (IM’s)

SIDEBAR

GDMO describes templates of information that define the managed object and its functionally. This particular description technique corresponds exactly to the CMIP management protocol’s services.

A preference of many network operators for SNMP makes GDMO problematic - for example, CMIP object attributes are allowed to be optional, whereas all parameters in SNMP managed objects are always mandatory. There are other significant differences that complicate incorporation of information models built around GDMO techniques for SNMP management applications.  For this reason, IETF’s STD 58 SMIv2 becomes important in the industry.

Current efforts to model in ITU and IETF are now “protocol neutral”.  Only the common subset of management protocol characteristics are assumed.

Technical Standards - Read and Understood:

IETF Ethernet Information Model

    STD50 Definitions of Managed Objects for the Ethernet-like Interface Types

IETF Remote Monitoring MIB

    STD59 Remote Network Monitoring Management Information Base

IETF Structure of Management Information

    STD 58 Structure of Management Information Version 2 (SMIv2)

ITU-T Control Plane Information Model

    G.7718.1 Protocol-neutral management information model for the control plane view

ITU-T Generic Information Model

    M.3100 TMN Generic Network Information Model

ITU-T OTN Information Model

    G.874.1 Optical transport network (OTN): Protocol-neutral management information

            model for the network element view  

ITU-T SDH Information Model

    G.774 SDH - Management information model for the NE view  

    G.774.1 SDH - Bidirectional performance monitoring for the NE view  

    G.774.2 SDH - Configuration of the payload structure for the NE view  

    G.774.3 SDH - Management of multiplex-section protection for the NE view  

    G.774.4 SDH - Management of the subnetwork connection protection for the NE

            view  

    G.774.5 SDH - Management of connection supervision functionality (HCS/LCS) for

            the NE view  

    G.774.6 SDH - Unidirectional performance monitoring for the NE view  

    G.774.7 SDH - Management of lower order path trace and interface labeling for the

            NE view  

    G.774.8 SDH - Management of radio-relay systems for the NE view  

    G.774.9 SDH - Configuration of linear multiplex-section protection for the NE view  

    G.774.10 SDH Multiplex Section (MS) shared protection ring management for the

            NE view  

    G.853.3 Information viewpoint for topology management  

    G.853.6 Information viewpoint for trail management  

    G.853.8 Information viewpoint for pre-provisioned adaptation management  

    G.853.10 Information viewpoint for pre-provisioned link connection management  

    G.853.12 Information viewpoint for pre-provisioned link management  

    G.853.16 Information viewpoint for pre-provisioned route discovery

    G.874 Management aspects of the optical transport NE  

    G.874.1 Optical transport network (OTN): Protocol-neutral management

            information model for the NE view

    G.984.4 Gigabit-capable passive optical networks (G-PON): ONT management and

            control interface specification  

ITU-T Structure of Management Information

    X.720 / ISO 10165-1 Management information model

    X.720 / ISO 10165-1 Amd.1 Generalization of terms

    X.721 / ISO 10165-2 Definition of management information

    X.721 / ISO 10165-2 Amd.1 Enhanced event control

    X.722 / ISO 10165-4 Guidelines for the Definition of Managed Objects

    X.722 / ISO 10165-4 Amd.1 Set by create and component registration

    X.722 / ISO 10165-4 Amd.2 Addition of the NO-MODIFY syntax element and

            guidelines extension

    X.722 / ISO 10165-4 Amd.3 Guidelines for the use of Z in formalizing the behaviour

            of managed objects

    X.723 / ISO 10165-5 Generic management information

    X.724 / ISO 10165-6 Requirements and Guidelines for implementation

            conformance statement proformas associated with management information

    X.725 / ISO 10165-7 General relationship model

    X.727 / ISO 10165-9 Systems management application layer managed objects

Other Technical Documents - Read and Understood:

SONET Interoperability Forum

    SIF-014-1997 Information Model for Connection Management and Fault

            Management at the EMS/NMS Interface

    SIF-023-1998 Network View Model for Connection Management and Fault

            Management

    SIF-025-1999 SONET NE View Requirements and Information Model

Telcordia

    GR-303-IMD Integrated Digital Loop Carrier Generic Operations Interface (Formerly

            TR-TSY-000303, Supplement 3)

    GR-836 Generic Operations Interfaces Using OSI Tools: Information Model Overview:

          Transport Configuration and Surveillance For Network Elements

    GR-836-IMD OTGR: Generic Operations Interfaces Using OSI Tools - Information

          Model Details: Transport Configuration and Surveillance for Network Elements

    GR-1042 Generic Requirements for Operations Interfaces Using OSI Tools -

          Information Model Overview: Synchronous Optical Network (SONET) Transport

          Information Model

    GR-1042-IMD Generic Requirements for Operations Interfaces Using OSI Tools -

          Information Model Details: Synchronous Optical Network (SONET) Transport

          Information Model

    GR-1114 Generic Operations Interface Requirements: ATM Information Model

    GR-2950 Information Model for SONET Digital Cross-Connect Systems (DCSS)

Acronyms on this Page:

(I’m working on the acronyms...)

Key Concepts:

    Guidelines for the Definition of Managed Objects (GDMO)

    Structure of Management Information (SMI)

    Object-Oriented with fully defined Inheritance and Entity Relationships

“Foundation” Standards:

    ITU-T X.722 / ISO-10165-4 Guidelines for the Definition of Managed Objects

    IETF Standard 58 Structure of Management Information Version 2 (SMIv2)

    ITU-T M.3100 TMN Generic Network Information Model