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The Research and Implementation of Object-Oriented Distributed Network Management Technology

Author: ZhangJinXiang
Tutor: WuQuanYuan
School: People's Liberation Army National Defense University of Science and Technology
Course: Computer Science and Technology
Keywords: Distributed network management CORBA Multi-level management architecture Managed organization Adaptive Information Extraction Group prefetching Integration Framework
CLC: TN915.07
Type: PhD thesis
Year: 2001
Downloads: 475
Quote: 5
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Abstract


With the continuous expansion of the size of the network, the increasing diversity of the network to provide services, the traditional network management model and simple information access policy has become increasingly difficult to adapt to the needs of the users of the network development. In order to obtain a distribution of characteristics, scalability to support interoperability, telecommunications network management system, management information adaptive access scholars at home and abroad, and network management system development vendors from different angles, different levels of technology expand the distributed network management. CORBA (Common Object Request Broker Architecture Common Object Request Broker Architecture) network management technology is to come to the fore in this context that a new topic, telecommunications network technology, the OMG (Object Management Group, Object Management Group), network management wide range of common concern of many researchers in the field of technology and the distributed object technology. This work around CORBA-based distributed network management at all levels expanded in-depth, the key findings are: 1. The delimitation, filtering and multiple objects for CORBA management itself does not support object access function, and may lead to a lack of network management traffic increases rapidly, CORBA practical based CORBA management and the characteristics of each of the OSI Systems Management we propose the classification of a CORBA multi-level network management architecture MHNM (Multi-Hierarchy Network Management), the structure combines the advantages of the OSI Systems Management with CORBA object using pseudo-Agent Distributed Management and tube pre value Cache technology to provide fast access to the functions of multi-object support to solve the problem of network management performance degradation caused by the the CORBA \2. Organizational management information for CORBA similar unstructured documents and their processing management information query, insert, or delete operation less efficient defect, CORBA management, similar to that of OSI systems management and SNMP ( Simple Network Management Protocol, SNMP) management MIB (Management Information Base, management information database) tree organization and storage. Managed object instance is stored in the MIB, and their view a tree structure, in order to locate and query. Furthermore, CORBA managed object organization strategy, define a policy, strategy and finding strategies, the CORBA network management, managed object structured organization and efficient operation. 3. Telecommunications network, TMN (Telecommunications Management Network Telecommunications Management Network) network element layer number of managed object as many as 10 to 6 orders of magnitude of the managed object and efficient access policy has been an important factor in restricting the performance of network management. Traditional lack of timing extraction method of network management information, a new algorithm to extract more than management object information - adaptive algorithm SAA (Self-Adaptive Algorithm), the algorithm can not change management protocol, such as IIOP (Internet Inter-Operability Protocol), SNMP or CMIP (Common Management Information Protocol, Common Management Information Protocol), an adaptive strategy, fault-tolerant strategies, dynamic identification of the managed object state policy, the storage space of the managed object dynamic refresh strategy the network traffic according to the access tube National Defense Science and Technology University Graduate School Dissertation object derived adaptively adjust the next visit of managed objects and managed Liu as the data is read interval, which can be compared with less consumption of network bandwidth and CPU resources used. Order to further reduce the the NMS network bandwidth direct impact on the performance characteristics of the network management system, combined with the managed object information collection policy, multi-object management for large-scale heterogeneous network environment information collection problems, put forward a new algorithm - group prefetching algorithm GPA (Group Prefetehing Algorithim) extracted managed object information, the algorithm can also not change management protocol, such as IIOP, SNMP or CMIP case, the use of group prefetching strategy group of objects adapt to the expansion strategy, the group objects contraction adaptive strategy, fault-tolerant strategies, multiple dispersed in the same or different pipe equipment, access to a combination of the object in the next period of time to visit a prefetch group , reducing the managed object access frequency, which can be less occupied by the network resources and minimizes the overall network overhead. Chinese mobile communication network, local network management system designed for background, our practice has developed a mobile communication network, local network management system, radio and television cable TV Transmission Network Management System and the postal network management system based combination multi-level network management architecture Ml Jiang NM, organization of management information strategy, the adaptive algorithm SAA and extract management information group prefetching algorithm the GPA in CORBA-based distributed computing software platform StarBus detailed analysis based on CORBA technology to achieve practical integrated management of heterogeneous network management system key technologies, approaches, and software architecture. The end of the article summarizes the main findings of this paper, and outlines further research directions.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Communication network > General issues > Network management
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