Tmn versus Snmp-based Network Management Systems

The OSI (Open System Interconnection) model has been a successful framework for protocol architecture in some environments. Academically oriented systems or high-end communication networks had taken advantage of its wide goals and generous features. When network management arose as a major problem, the natural “official” answer was to build the Telecommunication Management Network (TMN), an architecture based on the existing OSI model. TMN systems have the same aim of universality as OSI systems. Therefore, both of them are complete but at the same time heavy, complex and expensive solutions. In addition, OSI and TMN approaches have to be approved by international standardization bodies (ISO and ITU-T), which implies time-consuming efforts -a drawback in today’s rapidly changing communications world.