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对简单网络管理协议(SNMP)和公共管理信息协议(CMIP)两种网管协议作了一般性的介绍,比较了它们的优缺点以及可能的解决方案。 相似文献
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Katherine Jones 《International Journal of Network Management》1994,4(3):130-137
The scope of network management has both expanded and been clarified in the recent past. Here we will look at the underlying protocols which aid in the delivery of network management today. 相似文献
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本文阐述了基于SNMP和CMIP的网络管理结构,从信息结构、管理功能、基本通信三方面扼要地比较了两者之间的差异,最后讨论了采用共存和互通方式的综合统一方案。 相似文献
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Two important requirements for protocol implementations to be able to provide quality of service (QoS) guarantees within the endsystem are: (1) efficient processor scheduling for application and protocol processing and (2) efficient mechanisms for data movement. Scheduling is needed to guarantee that the application and protocol tasks involved in processing each stream execute in a timely manner and obtain their required share of the CPU. We have designed and implemented an operating system (OS) mechanism called the real-time upcall (RTU) to provide such guarantees to applications. The RTU mechanism provides a simple real-time concurrency model and has minimal overheads for concurrency control and context switching compared to thread-based approaches. To demonstrate its efficacy, we have built RTU-based transmission control protocol (TCP) and user datagram protocol (UDP) protocol implementations that combine high efficiency with guaranteed performance. For efficient data movement, we have implemented a number of techniques such as: (1) direct movement of data between the application and the network adapter; (2) batching of input-output (I/O) operations to reduce context switches; and (3) header-data splitting at the receiver to keep bulk data page aligned. Our RTU-based user-space TCP/Internet protocol (TCP/IP) implementation provides bandwidth guarantees for bulk data connections even with real-time and “best-effort” load competing for CPU on the endsystem. Maximum achievable throughput is higher than the NetBSD kernel implementation due to efficient data movement. Sporadic and small messages with low delay requirements are also supported using reactive RTUs that are scheduled with very low delay. We believe that ours is the first solution that combines good data path performance with application-level bandwidth and delay guarantees for standard protocols and OSs 相似文献
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利用SNMP获取网络资源信息 总被引:1,自引:0,他引:1
介绍了SNMP协议的概念,讨论了利用SNMP协议获取网络资源信息的思路,分析了利用SNMP协议获取网络资源信息后,建立一个基于IP的网络管理系统的实现方案. 相似文献
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Elsharnouby T. Shankar A.U. 《Selected Areas in Communications, IEEE Journal on》2004,22(10):2035-2047
Many formal specification languages and associated tools have been developed for network protocols. Ultimately, formal language specifications have to be compiled into a conventional programming language and this involves manual intervention (even with automated tools). This manual work is often error prone because the programmer is not familiar with the formal language. So our goal is to verify and test the ultimate implementation of a network protocol, rather than an abstract representation of it. We present a framework, called services and systems framework (SeSF), in which implementations and services are defined by programs in conventional languages, and mechanically tested against each other. SeSF is a markup language that can be integrated with any conventional language. We integrate SeSF into Java, resulting in what we call SeSFJava. We present a service-and-assertion checking harness for SeSFJava, called SeSFJava harness, in which distributed SeSFJava programs can be executed, and the execution checked against services and any other correctness assertions. The harness can test the final implementation of a concurrent system. We present an application to a data transfer service and sliding window protocol implementation. SeSFJava and the harness has been used in networking courses to specify and test transmission control protocol-like transport protocols and service. 相似文献
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基于SNMP可扩展代理的网络仿真 总被引:4,自引:0,他引:4
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. 相似文献
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Increasing network throughput by integrating protocol layers 总被引:1,自引:0,他引:1
Integrating protocol data manipulations is a strategy for increasing the throughput of network protocols. The idea is to combine a series of protocol layers into a pipeline so as to access message data more efficiently. This paper introduces a widely-applicable technique for integrating protocols. This technique not only improves performance, but also preserves the modularity of protocol layers by automatically integrating independently expressed protocols. The paper also describes a prototype integration tool, and studies the performance limits and scalability of protocol integration 相似文献
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基于SNMP网络管理的MIB编译器的实现 总被引:1,自引:0,他引:1
文章首先介绍了SNMP网络管理的MIB编译器的功能,以及选择Perl语言作为开发工具的原因,并给出MIB编译器实现的程序流程图,在分析了两个TC类型的和五个与MIB对象或模块的格式定义有关的Perl正则表达式的基础上,提出了基于Perl的MIB编译器的实现方法。 相似文献
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基于SNMP的LMDS系统的网络管理 总被引:1,自引:0,他引:1
本文首先分析了LMDS系统网络管理的功能需求及管理内容 ,进而给出了基于SNMP的LMDS网管系统的构成 ,分别阐述了LMDS网管系统中的SNMP管理站 ,管理代理及管理信息库 ,并讨论了在用户数增多和多基站情况下本网管系统的可扩展性 相似文献
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SNMP网络管理机制及其实现 总被引:9,自引:0,他引:9
蔡皖东 《微电子学与计算机》1999,16(1):20-23,29
文章首先论述了SNMP协议及其网络管理机制。然后提出一种基于Web的网络管理方案,它是将Web技术引入到SNMP网络管理中,实现对Intranet的管理。 相似文献
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Analysis of security protocol Swift implementations in IOS platform is important to protect the security of IOS applications.Firstly,according to the security protocol Swift implementations,the SubSwift language,which was a subset of Swift language,was widely used in IOS system,and its BNF were specified.Secondly,the mapping model from SubSwift language to Blanchet calculus based on the operational semantic was presented which consisted of mapping rules,relationship from the statements and types in SubSwift language to Blanchet calculus.And then,a method of generating security protocol Blanchet calculus implementations from SubSwift language implementations was developed.Finally,security protocol Blanchet calculus implementation generation tool SubSwift2CV was developed with Antrl4 and Java language.At the same time,OpenID Connect,Oauth2.0 and TLS security protocol SubSwift language implementations were analyzed with SubSwift2CV and CryptoVerif. 相似文献
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Integrating SNMP agents with XML-based management systems 总被引:2,自引:0,他引:2
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. 相似文献
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引言 随着计算机网络应用规模及程度的扩大和加深,暴露出的安全问题越来越受到人们的重视。为此,安全设备生产商提供了各种层面的网络安全产品,如防火墙、漏洞评估工具、入侵检测系统等,它们在一定程度上保障了我们所处网络环境的安全性。然而,目前国内外网络安全产品中尚未贯彻统一的联动策略,各个安全设备仍然在“单兵作战”。这种状况下的安全,还停留在静态的安全防护理 相似文献
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简单网络管理协议(Simple Network Management Protocol,SNMP)是网络和设备管理的标准协议.分析了MIB(Management Information Base)模块的构建以及嵌入式SNMP Agent的开发流程,并基于ARM-LINUX操作系统和NET-SNMP开发包,实现了SNMP协议在太阳能电池的设备管理中的应用. 相似文献