Development of SNMP‐XML translator and gateway for XML‐based integrated network management

The research objective of our work is to develop a SNMP MIB to XML translation algorithm and to implement an SNMP‐XML gateway using this algorithm. The gateway is used to transfer management information between an XML‐based manager and SNMP‐based agents. SNMP is widely used for Internet management, but SNMP is insufficient to manage continuously expanding networks because of constraints in scalability and efficiency. XML–based network management architectures are newly proposed as alternatives to SNMP‐based network management, but the XML‐based Network Management System (XML‐based NMS) cannot directly manage legacy SNMP agents. We also implemented an automatic specification translator (SNMP MIB to XML Translator) and an SNMP‐XML gateway. Copyright © 2003 John Wiley &Sons, Ltd.     

Integrating SNMP agents with XML-based management systems

XML-based network management systems are becoming more and more popular these days. However, it has to be taken into account that there is a broad existing management infrastructure based on non-XML protocols. Today, the most dominant technology in Internet management is based on the SNMP framework. This article presents an approach for seamless integration of management information supplied by SNMP agents into XML-based systems. This is done by an automated transformation of SMI MIB definitions into XML schema definitions, which implies a corresponding transformation of SNMP management information into XML documents. Furthermore, we present an SNMP-to-XML gateway that allows retrieval of such XML management information at runtime.     

基于SNMP可扩展代理的网络仿真

提出了一个基于SNMP可扩展代理的网络仿真系统设计构架,它在现有的SNMP代理仿真系统基础上,引入SNMP可扩展代理构架,创建多个子代理和一个主代理,由每个子代理分别模拟一台网络设备,通过主代理与SNMP服务端进行通信,实现了对一定规模的网络的仿真,满足了网管项目开发过程中对测试环境的要求.     

一种基于网络管理的CORBA/SNMP网关模型的构建

首先介绍了分布式CORBA技术在网络管理中应用的必然趋势，通过分析基于传统的SNMP和分布式CORBA两种网络管理体系的结构框架以及JIDM规范，提出了一种新的基于网络管理的CORBA／SNMP网关模型框架。最后，介绍了搭建CORBA／SNMP网关模型所需要的开发平台并基于此开发平台进行了相关的试验和仿真，其结果进一步表明本文所提出的模型是适用的、正确的、能够将现有的SNMP网管系统集成到CORBA网管系统中。     

IPv4/IPv6转换网关的SNMP代理设计与实现

基于NAT-PT技术的IPv4/IPv6转换网关部署在IPv4/IPv6网络边缘,用于两网互通.对转换网关提供网络管理功能对保障两网互通有着重要意义.然而,网关所在网络业务流量的复杂性和其基于网络处理器的架构对网络管理的实现提出了挑战.本文提出了一种转换网关SNMP代理的设计方案,定义了NAT-PT MIB,实现了网络处理器环境下分布式MIB的采集并提供了对IPv4/IPv6两网内进行网络管理的支持.     

基于NET-SNMP的嵌入式网络管理代理的开发

文中介绍了如何利用软件开发包,在屏蔽大部分低层细节的基础上,实现SNMP网络管理代理的设计。在嵌入式操作系统之上,论述了树型结构数据库MIB模块的增加,以及基于NET-SNMP网络代理的扩展开发和嵌入式网络管理代理的具体实现。表现了简单网络管理协议SNMP自身的简单实用性,以及Agent X协议为网络设备带来的可扩展性,达到了小型设备上运行子代理,发送数据给主代理来完成SNMP协议的通信过程。     

Development and testing of an SNMP‐based integrated management system for heterogeneous power line communication networks

Power line communication (PLC) is an evolving technology which uses existing power lines for data transmission. Like any other communication network, PLC networks need to be managed to ensure efficient use of resources and secure operations. Currently, major PLC chip vendors are trying to provide network management solutions based on the Simple Network Management Protocol (SNMP) by developing their own management systems, but they cannot manage heterogeneous PLC networks comprised of PLC devices from various PLC chip vendors. In this paper, we provide our experience of developing and testing an integrated management system for a heterogeneous PLC network based on SNMP. We present our approach for integrated management by defining the common PLC management information base (MIB) and an integrated PLC proxy agent for providing interoperability to legacy PLC devices which do not support the common PLC MIB. We also present the development of an integrated PLC network management system and its test in heterogeneous PLC networks deployed in South Korea. The contribution of our work is to provide a guideline for developing and testing integrated NMSs for any heterogeneous networks including PLC networks. Copyright © 2009 John Wiley & Sons, Ltd.     

可信移动Agent的研究及在分布式网络管理中的应用

为解决分布式网络管理的安全问题,利用移动Agent框架作为底层平台,应用VMC概念将移动Agent和SNMPAgent相融合,构建一种基于可信移动Agent的安全体系结构。实验结果表明,采用此体系结构的网络管理系统能够确保移动Agent的可信性。因此,该体系结构在受到Agent到Agent平台或Agent到Agent攻击情况下的安全性得到评估,证明在网络管理任务中其性能是可信的。     

ForCES体系结构中支持SNMP 的FE代理端的研究和实现

网络管理系统由网管站、管理代理、管理信息数据库和网络管理协议构成.简单网络管理协议（SNMP）包括管理信息结构（SMI）、管理信息库（MIB）和SNMP 三部分.首先介绍了ForCES体系结构、ForCES最新进展和SNMP简单网络管理协议,然后提出了一种ForCES支持SNMP的方案,并指出了ForCES结构下的路由器在实现网络管理上的主要问题和困难,最后给出了如何利用网络管理软件开发ForCES模型中FE端SNMP代理的具体方法.     

Ad Hoc网络中SNMP代理的研究和实现

研究了在基于TCP／IP体制的Ad Hoc网络中,利用简单网络管理协议SNMP和网管代理解决严重和复杂的网络管理问题。在分析SNMP协议工作原理的基础上,探讨了SNMP代理的工作流程、组成模块和实现方式,并搭建Ad Hoc网络实验环境进行了测试验证。实验结果表明,通过SNMP协议和代理,能够有效管理和控制Ad Hoc网络中的关键参数,降低了系统的复杂程度和技术风险。     

基于SNMP的带外服务器的研究

分析了基于SNMP协议的网络管理结构及在嵌入式带外服务器中实现SNMP模块的重要性,详细说明了SNMP Agent的工作流程.在原有的基于嵌入式Linux平台的带外管理系统中增加了SNMP模块,增强了该系统的网络可管理性,可以通过网络管理工作站对其进行监控和维护.     

嵌入式设备SNMP代理软件的分析与实现

分析了嵌入式简单网络管理协议（Simple Network Management Protocol,SNMP）代理软件的功能模块及相应模块软件结构的组成,根据嵌入式设备的软硬件资源,并基于NET-SNMP开发包,讨论管理信息库（Management Information Base,MIB）模块的构建和代理软件的开发流程。综合多种网络管理开发工具,验证了SNMP代理对嵌入式设备的网络管理功能。     

WACOS系统网关网管系统设计

主要描述WACOS系统网关网管部分的设计。该系统基于SNMP协议,同时满足电信级网管要求,包括配置管理、性能统计和告警管理等。文章重点介绍了配置管理和性能统计的实现。     

HFC网管系统的MIB原理与实现

近几年HFC网络技术的迅猛发展使得网络规模更加庞大、结构更加复杂，只有通过适当的网络管理，功能强大的网络才能得到充分利用，而有效的网络管理及良好性能已成为评价网络的一个重要标准。SNMP是一种易于实现的基本网络管理工具，能满足目前网络管理的需求，将SNMP协议引入到HFC网管系统是大势所趋，而在网络管理的实现过程中，对MIB的实现尤为重要。     

Scalability and performance of an agent‐based network management middleware

Rapid growth of computer network sizes and uses necessitate analysis of network application middleware in terms of its scalability as well as performance. In this paper we analyze a distributed network management middleware based on agents that can be dispatched to locations where they can execute close to the managed nodes. The described middleware operates between the network protocol layer and the application layer and uses standard TCP protocol and SNMP probes to interface the network. By aggregating requests from many users into a single agent, our system allows multiple managers to probe problem areas with minimal management traffic overhead. We discuss and quantify the benefits of the described middleware by implementing real‐time network managers using our system. The main result of this paper is a comparison of scalability and efficiency of our agent‐based management middleware and traditional SNMP‐based data collection. To this end, we measured traffic in both real and simulated networks. In the latter case, we designed, used and described here a method of separating simulated application flow into separate subflows to simplify design of simulations. Copyright © 2004 John Wiley & Sons, Ltd.     

通信设备的SNMP网管系统代理端的设计

SNMP方式网管是一种有效便利的网络管理方式,文章提出了一种基于Rabbit 2000网络处理器和Dynamic C语言的SNMP网管系统的嵌人式代理端解决方案,它可以将以前应用较为广泛的通信设备的串口(RS232／485／422)网管方式平滑升级到SNMP网管方式。     

SNMP代理扩展实现通信电源设备的管理

介绍了网络管理协议SNMP和SNMP代理的扩展,并结合实际项目在Linux系统下,利用net-snmp免费代码开放软件包实现SNMP代理的扩展。     

XML-based configuration management for IP network devices

As the Internet continues to grow, the tasks of operations and management of IP networks and systems are becoming more difficult. Over the past few years, much effort has been given to improve the deficiencies of SNMP, but most have failed to be standardized. One critical deficiency of SNMP is in the area of configuration management. Recent work focuses on the use of XML technology for network and service management as an alternative or complementary approach to SNMP. This article presents the IETF's latest effort, Netconf, which is viewed by many as a promising revolutionary solution for configuration management. To validate this new effort, we present the design and implementation of an XML-based configuration management system based on Netconf. We also discuss our experience with XCMS and make some suggestions for improving the current Netconf protocol.     

IP网络管理系统的设计与实现

文章介绍了一个实用SNMP网络管理系统的设计与实现.首先给出了基于B/S模式的的系统结构,然后分析了拓扑发现、性能监测、状态监视、TRAP接收、告警处理等关键技术,最后是对该网管平台的评价和下一步的工作.     

SNMP代理模拟工具的设计与实现

简单网络管理协议(SNMP) 是目前应用最广泛的网络管理协议.文章设计了一种SNMP代理模拟工具,通过分析设备管理信息库(MIB)文件提供的设备信息、模拟代理和管理软件的通信,实现了对多厂商、多种类设备环境的模拟,满足了网管项目开发和测试过程中的环境需要.