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Question 14/15 – Management and control of transport systems and equipment
(Continuation of Question 14/15)


As the level of functionality and intelligence in transport networks increases, the management and control requirements and supporting information models for these networks become more important. Management/Control Recommendations are required for all types of transport equipment, e.g., optical, wireless, terrestrial, submarine, satellite, etc., defined in ITU-T Recommendations. Management/Control requirements and information models for the interworking of standards-based transport systems/equipment and other equipment are essential to realize the full value of modern transport networks.

ITU-T has established the Telecommunications Management Network (TMN) concept as a generalized framework for the definition of management requirements and supporting information models. Recommendations are needed to integrate into the TMN framework the management functions of modern, standards-based transport equipment. Management requirements and information models should be based on the current ITU-T specified principles, functions, and techniques, for example as contained in Recommendations M.3010, M.3013, M.3020 and M.3400.

ITU-T is creating standards on Automatically Switched Optical Networks (ASON) and their control mechanisms. Specifically, the ASON control mechanisms support both the activation of efficient connection configurations in a transport layer network and fast optical restoration. An architecture framework has been defined in Recommendations G.8080/Y.1304 (architecture) for ASON. Recommendations for the protocol-neutral requirements and protocol solutions are needed for ASON control, discovery, and management.

The following major Recommendations, in force at the time of approval of this Question, fall under its responsibility: G.774-series, G.784, G.874-series, G.875, G.876, G.7710/Y.1701, G.7712/Y.1703, G.7713/Y.1704-series, G.7714/Y.1705-series, G.7715/Y.1706-series, G.7716/Y.1707, G.7718/Y.1709-series, G.8051/Y.1345-series, G.8151/Y.1374-series, and I.752.


What management requirements and information models must be specified to enable efficient and effective management of transport equipment in interoffice and long distance networks, including evolution to the Optical Transport Network (OTN), IP networks and Next Generation Networks (NGN)?

What management requirements and information models must be specified to support the interworking among equipment and systems of different transport technologies, e.g., various interworking combinations among IP, ATM, SDH/SONET, OTN, MPLS, and Ethernet?

What factors should be considered to identify management methodologies best suited to the characteristics of network equipment? Based on the Q-interface characterization in M.3010 and M.3013, what management protocols are appropriate for different classes of equipment? For example what management protocols are best suited to equipment that has limited management capabilities.

What control requirements and protocol solutions must be specified to enable efficient and effective signalling, routing, automatic discovery, and management of ASON?

What management and control requirements and protocol solutions should be specified to enable efficient use of power energy of the equipment in the network without impacting the reliability and availability of the network?

Study items to be considered include, but are not limited to:

  • ASON control architecture based protocol-neutral requirements and associated protocol solutions, including packet transport networks (e.g., Ethernet transport network and MPLS transport network)
  • Management aspect of control planes, including interaction between a control plane and a management plane
  • Management aspects of:
    • Ethernet transport network equipment
    • MPLS transport network equipment
    • SDH equipment
    • Optical Network equipment
    • Flexible multiplexing equipment
    • PDH multiplexing equipment
    • ATM equipment
    • NGN equipment
    • Access equipment
    • Generic Framing Procedure (GFP) to include client signals such as Fibre Channel clients, FC_BB_GFPT
    • Link Capacity Adjustment Scheme (LCAS)
    • Virtual Concatenation
    • MPLS
    • Management data communication capability
    • Power management of the equipment
  • Common management service (Joint work item with Study Group 2)


Tasks include, but are not limited to:

  • Revise Recommendations in the G.774 series
  • Revise Recommendation G.784, including VCAT and LCAS functions.
  • Complete draft new Recommendations I.752, G.875, G.876
  • Revise Recommendations G.874 and G.874.1, including VCAT and LCAS functions
  • Revise Recommendation G.7710/Y.1701, Common Management Requirements, including requirements for power saving modes
  • Revise Recommendation G.7712/Y.1703, Data Communication Network
  • Revise Recommendations G.7713/Y.1704 and G.7713.x/Y.1704.x series
  • Revise Recommendations G.7714/Y.1705 and G.7714.1/Y.1705.1
  • Complete new Recommendations for G.7714.2/Y.1705.2 (Transport capability exchange for automatic discovery)
  • Revise Recommendations G.7715/Y.1706 and G.7715.x series
  • Complete new Recommendations for ASON protocol-specific routing
  • Complete new Recommendations G.7716/Y.1707 (on architecture of control plane operations)
  • Revise Recommendations G.7718/Y.1709 and G.7718.x/Y.1709.x series on Framework for ASON Management and information model
  • Draft new Recommendation on protocol-neutral information model for LCAS and Virtual conCATenation (VCAT) mgmt
  • Revise Recommendation G.8051/Y.1345 “Management aspects of the Ethernet transport network element”
  • Draft new Recommendation G.8052/Y.1346 “Protocol-neutral management information model for the Ethernet transport network element”
  • Develop a revised version of Recommendation G.8151/Y.1374 “Management aspects of the MPLS-TP network element” to align with the MPLS-TP architecture and include the appropriate normative references to the MPLS-TP RFCs that are being developed to address the requirements of the transport network. Update the title to replace T-MPLS with MPLS-TP to reflect the new contents.
  • Draft new Recommendation G.8152/Y.1375 “Protocol-neutral management information model for the MPLS-TP network element”

NOTE: An up-to-date status of work under this Question is contained in the SG15 Work Programme at




  • M series (SG2), G.800, G.805, G.806, G.809, G.783, G.798, G.8010, G.8021, G.8110.1, G.8121, G.8080, Y.1563, Y.1731.


  • Q2/15, Q4/15, Q9/15, Q10/15, Q11/15, Q12/15, Q13/15

Study Groups:

  • ITU-T SG2 on telecommunication management
  • ITU-T SG13 on next generation network operation and maintenance
  • ITU-T SG16 for the transport of Multimedia
  • ITU-T SG17 on data networks
  • ITU-R WP 9B for radio relay system

Standardisation bodies, forums and consortia:

  • OMG on CORBA technology
  • IETF Working Groups in Operations and Management, Transport, and Routing
  • OIF (Signalling, Architecture, Carrier, and OAM&P WGs)
  • ATIS Committee OPTXS on transport management aspects
  • ATIS Committee TMOC on generic management aspects
  • TM Forum (MTNM and MTOSI aspects)
  • W3C on XML
  • IEEE 802 on Ethernet management
  • MEF on Ethernet management


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Updated : 2008-12-23