Network Sales and Services Handbook (Cisco Press Networking Technology)
TMN is the International Organization for Standardization (ISO) and International Telecommunications Union (ITU) standard detailed in the ITU-T Recommendation Series M.3000. The M.3000 series defines the framework for the planning, provisioning, installation, maintenance, operations, and administration of telecommunications networks and services. This framework is flexible, scalable, reliable, inexpensive to run, and easy to enhance. TMN provides for more capable and efficient networks by defining standard ways of doing network-management tasks and communicating across networks. TMN also allows processing to be distributed to appropriate levels for scalability, optimum performance, and communication efficiency.
NOTE
The full ITU-T M.3000 recommendation series can be found at www-comm.itsi.disa.mil/tmn/tmn_itu.html. |
The principles of TMN are incorporated into a telecommunications network, sending and receiving information and managing network resources. Telecommunications networks are made up of switching systems, circuits, terminals, etc. In TMN terminology, these resources are referred to as network elements (NEs). TMN enables communication between operations support systems (OSS) and NEs.
TMN architecture and interfaces build on existing open systems interconnection (OSI) standards, which include but not limited to the following:
CMIP Defines management services exchanged between peer entities (other network management devices).
Guideline for Definition of Managed Objects (GDMO) Provides templates for classifying and describing managed resources.
Abstract Syntax Notation One (ASN.1) Provides syntax rules for data types, such as those found in an MIB.
OSI Model Defines the seven-layer OSI Reference Model.
NOTE
The TMN standards work has been incorporated into the work by other standards bodies, such as the Network Management Forum (NMF), Bellcore, and the European Telecommunications Standards Institute (ETSI). The Synchronous Optical Network (SONET), SONET Interoperability Forum (SIF), and the Asynchronous Transfer Mode Forum (ATMF) are specifying TMN-compliant management interfaces. |