【作者】 刘江；

【导师】 赵栋；

【作者基本信息】 北京信息控制研究所 ， 计算机应用， 2006， 硕士

【摘要】 业务环境是商业组织开展业务活动的计算机网络环境，是由众多支持不同技术、不同品牌型号的网络设备组成的。若采用传统的网络管理系统来管理这种复杂的业务环境，网络管理员需要逐一的配置网络设备、掌握大量相关的技术、学习网络设备的配置等，耗费大量的时间、人力和物力。不仅如此，传统的网络管理软件难以快速地、一致地配置网络和及时地、动态地改变网络行为，更无法满足业务环境繁复的业务需求。本文采用了基于策略的网络管理(Policy-Policy-Based Network Management)技术来解决设备异构型网络和业务需求结合所产生的上述业务环境管理难题。本文首先从IETF定义的策略管理框架标准着手，论述了该框架的四个组件，策略管理工具、策略存储库、策略决策点和策略执行点的功能以及它们之间的通信协议。接着分析了企业内联网、企业外联网、互联网接入提供商、应用服务提供商四种具有广泛代表性的典型业务环境的业务需求，网络技术、网络设备以及网络拓扑结构等特点，从而抽取出高级、中级和低级三种策略，再对被管设备、业务需求、策略进行建模，然后将IETF的策略管理框架和具体的业务环境相结合，完成了四种业务环境PBNM系统的策略管理框架设计。最后本文将企业内联网业务环境的对象模型映射到企业内联网PBNML系统的LDAP目录服务器中，接着根据前面设计的企业内联网PBNM系统的策略管理框架，编码实现了企业内联网PBNM系统。更多还原

【Abstract】 Business environment is a type of computer network which consists of many kinds of network device that support different network technologies and by which business organizations operate theire business activities. To manage such a complex business environment, the traditional network management system meets many problems. For example, network administrator must acquire network technologies, learn device configuring and have to configurate devices one by one, which spend much time, manpower, and money. The traditional network management system can’t configrate network quickly and consistently and change behavior of network dynamicly and in time. The effect of the traditional network management system can’t meet the business requirements of business environments finally.This paper makes use of policy-based network management (PBNM) technology to resolve the business environments management problems by which are brought on by the combination between device-heterogeneous network and buseness requirements. At first, this paper introduces the IETF policy framework standard. Describe four basic components, that is, policy management tool (PMT), policy repository, policy decision point (PDP), policy enforcement point (PEP) and policy protocols which are used for communication between the components. Secondly analyse the business requirements, network tehnologies, network devices and network topologies of four classic organizations-enterprise intranet, enterprise extranet, internet service provider (ISP) and application service provider (ASP), and then from these characteristics abstract high-level policy, middle-level policy and low-level policy, and contract managed object models, policy models and other models of four business environments. Thirdly consider the context of four business environments, design the policy frameworks for PBNM system four business environments based on IETF policy framework.Finally, map object models to light directory access protocol (LDAP) directory system. Then, implement a PBNM system based on the policy framework for enterprise intranet.更多还原