The OSI Basic Reference Model introduces the concept of management within OSI, and identifies a category of management activity described as Systems Management. It is recognized that OSI Management Framework is young. Details of Management Information Services are presently not fully understood. However, it is within the scope of this book to address the issue of management.
The Network Management implementation architecture outlined here is based on []. The concepts described in [] trickle down to the lower layers. Layer management facilities, should therefore be designed to support these concepts. This sections deals with Common Management Information Services as they apply to the lower layers.
Following figure illustrates OCE's view of Network Management Architecture.
Each layer has a Layer Management Entity (LME) which provides an interface for manipulating and monitoring that layer's performance. Each System has an entity that can access individual LME and perform Network Management Functions. This entity will be called "Layer Management Entity Interface" Common Management Information Services Element (CMISE) is responsible for monitoring the system on behalf of a Network Management Administrator (NMA).
The Common Management Information Protocol (CMIP) provides request/response service between a CMISE in one real open system and a CMISE in a second real open system which may be carrying out management activities in that real open system on behalf of the CMISE in the first open system. The CMIP also provides an event reporting service between an event reporting CMISE and an event monitoring CMISE.
