Weighted link quality and forward progress coupled with modified RTS/CTS for beaconless packet forwarding protocol (B-PFP) in VANETs

Telecommunication Systems - The Internet Engineering Task Force recommends the use of a group of well-defined protocols to support Internet of ThingsLow-Power Low-Rate Networks (LLNs). These...     

Design and Performance Analysis of Objective Functions for RPL Routing Protocol

Wireless Personal Communications - Standardized by Internet Engineering Task Force (IETF) working group, RPL (Routing Protocol for Low Power and Lossy networks) stands as an effective IPV6 Routing...     

The IETF activities in the operations and management area

The Internet Engineering Task Force works on standardization of Internet related protocols. The work is divided into various areas. One of the areas is operations and management. This article provides first a summary of the areas that exist within the IETF and then describes in some detail the tasks for each of the Working Groups (WGs) in the operations and management area     

Internet service monitoring with mobile agents

The Internet Engineering Task Force standardizes new IP technologies such as Differentiated Services and IP security that allow Internet service providers to offer new and enhanced network-level services. There is a need for a measurement infrastructure to monitor services, especially for support of end-to-end services across the Internet. The infrastructure should provide a safe way for customers to monitor the enhanced properties of the services they use. Also, providers should be able to use the infrastructure to ensure provider collaboration. We implemented a mobile-agent-based monitoring infrastructure for new and enhanced IP services     

IETF and Internet standards

The IETF (Internet Engineering Task Force) is a standardization body focused on the development of protocols used on IP-based networks. The IETF consists of many working groups and is managed by the Internet Engineering Steering Group (IESG), Internet Architecture Board (IAB), and Internet Society (ISOC). The IETF is different from most standardization bodies in that it is a totally open community with no formal membership, and its process is based on “rough consensus running code”     

IETF有关Internet上多媒体会议系统的相关协议

文章在简介IETF的基础上,分别介绍了有关Internet上多媒体会议系统的相关协议,包括SDP、SAP、SIP、RTSP、RTCP等协议的基本内容及其应用。     

The Session Initiation Protocol: Internet-centric signaling

The Session Initiation Protocol (SIP) provides advanced signaling and control functionality for a wide variety of multimedia services. SIP can efficiently and scalably locate resources based on a location-independent name and then negotiate session characteristics. It can find use in applications ranging from Internet telephony and conferencing to instant messaging, event notification, and the control of networked devices. We summarize the main protocol features and describe a range of extensions currently being discussed within the Internet Engineering Task Force     

Mobile and wireless Internet services: putting the pieces together

There are a variety of emerging technologies and protocol enhancements designed to extend Internet services to mobile users, including operation over more dynamic, heterogeneous wireless interconnections. Many different approaches and protocols have been proposed, and there are even multiple standardization efforts within the Internet Engineering Task Force that address portions of the overall goal. This article highlights some of the emerging technology efforts and provides insight into how some of these pieces may fit together to realize seamless Internet services for users on the move or in application spaces with little to no preexisting communications infrastructure     

Internet protocols for multimedia communications. I. IPng-thefoundation of Internet protocols

Surveys recent and current standardization work by the Internet Engineering Task Force (IETF) on Internet communication protocols. The author describes the IPng project and the IPv6 protocol that will form the basis for upper-layer protocols such as resource reservation, transport and application level protocols. The IETF decided in 1992 to develop a new version of the Internet Protocol (IP) because the available address space of IP version 4 (IPv4) will probably run out early in the 21st Century. The need for a new IP version provided the opportunity to redesign the protocol and add new functions     

ISP Traffic Management: Will Innovation or Regulation Ensure Fairness?

Telecommunications regulatory agencies in the US and Canada, responding to complaints, are looking at how far Internet service providers (ISPs) can go in limiting customers' bandwidth and how much information they must disclose about how they're doing it. Concurrently, the Internet Engineering Task Force (IETF) standards body has recently convened two Birds of a Feather (BoF) groups to address traffic-management complexities exemplified by rising peer-to-peer (P2P ) application use that some ISPs claim is choking off bandwidth for other users.     

MPLS的框架及其关键技术

ＭＰＬＳ（Ｍｕｌｔｉｐｒｏｔｏｃｏｌ ａｂｅｌ Ｓｗｉｔｃｈｉｎｇ：多协议标记交换）还是一项非常不成熟的技术,它目前正在由ＩＥＴＦ进行标准化。对ＭＰＬＳ的工过程进行了回顾,然后介绍了ＭＰＬＳ的体系结构,最后论述了ＭＰＬＳ目前急需解决的一些关键技术。     

The common agent-a multiprotocol management agent

The common agent is an implementation of an ISO-compliant management agent that supports multiple management protocols and the run-time addition of new classes of managed objects. Support is also provided for managing objects that are defined according to the structure of management information, defined by the Internet Engineering Task Force, and the structure of management information defined by ISO     

基于策略的工作流系统研究

结合互联网工程任务组(Internet Engineering Task Force,IETF)提出的策略的概念和策略部署模型,提出了一种基于策略的工作流系统,并结合工作流系统的特点,提出了描述工作流策略语言,并给出了使用基于策略扩展的Petri网建立工作流过程模型的方法。基于该元模型的定义的工作流具有较好的灵活性,并对工作流的运行期实例的动态修改提供了支持。     

Host mobility for IP networks: a comparison

The growth of wireless networking is enabling many Internet hosts to become mobile. This article describes and compares three alternatives for providing host mobility managment in IP-based networks. We first summarize the operation and behavior of Mobile IP, on which the Internet Engineering Task Force has focused as a host mobility solution. We next describe two alternative architectures (Migrate and host identity protocol) for providing mobility management. Our qualitative comparison focuses on contrasting the different performance, security, deployment, scalability, and robustness properties of each approach.     

Das Simple Control Transmission Protocol (SCTP) — ein neues Protokoll zum Transport von Signalisierungsmeldungen über IP-basierte Netze

Within the Internet Engineering Task Force a new transfer protocol called SCTP for the transmission of signalling data over IP-based networks is currently being discussed. This article introduces the protocol and the mechanisms it uses for secure and efficient transport of data, as well as properties that make it superior to established protocols like TCP or UDP. Moreover, possible application and interworking scenarios for classical telecommunication networks are described.     

IPv4/IPv6过渡的安全评估

近年来,由于Internet技术的迅猛发展,使得现在广泛使用的32位IP地址面临被用完的威胁,为此IETF 提出了下一代因特网协议(IPng)即IPv6,用来取代IPv4。本文介绍了IPv4/IPv6过渡技术的机制及过程,对各种IPV4/IPV6过渡技术的安全问题进行讨论,探讨了这些过渡机制安全方面的优劣、使用中的限制、应用方式及效果。     

新兴的光城域以太网业务及其标准

本探讨了当前以太网业务存在的问题和当前的解决方案，并介绍城域网论坛MEF、国际电信联盟电信标准部ITU—T等标准化组织在定义的新兴的光以太网业务，和其标准体系和最新情况。     

移动Ad hoc网络路由协议标准

通过重点说明互联网工程任务组(IETF)已通过的两个移动Ad hoc网络路由协议标准,使得相关工程人员在对应用于此种网络的路由协议有一个整体认识基础之上,进一步加深对移动Ad hoc网络原理的理解.     

The dynamics of collaborative design

The University of Colorado at Denver's Internet Task Force has been conducting developmental research on the collaborative learning and participatory design process while creating and implementing the School of Education's Web page and mediated learning environment. We developed a design and learning process model that is appropriate for designers working in groups in academic or corporate environments. Critical features are authentic tasks, knowledge development, generating research questions and reflection     

IN与Internet互连的业务和体系结构及其协议

因特网和智能网都是目前发展势头强劲,潜力巨大的技术,将两者有机结合起来将对网络和业务的发展起到积极的推动作用,文中列举了与IN/Internet互连相关的标准化组织及其研究计划,然后在讨论IETF和ITU-T提出的互连方案的基础上给出北京邮电大学国家重点实验室的实现方案。