IPv4-IPv6网络中分组时延变化对DiffServ-MPLS视频语音传输的影响
Effect of Packet Delay Variation on Video-Voice over DiffServ-MPLS in IPv4-IPv6 Networks
摘要：
在过去的几年中，我们目睹了在互联网上的实时应用的快速部署以及许多关于服务质量（QoS）的研究工作，特别是IPv4（互联网协议版本4）。剩余IPv4地址池的不可避免的耗尽已经变得越来越明显。随着互联网协议（IP）的不断演进，IPv6 QoS的部署正在进行中。目前，在MPLS骨干网中结合DiffServ（区分服务）支持为IPv6流量部署QoS的经验有限。当端到端路径的多个链路拥塞时，DiffServ本身不具有控制已被用于该路径的流量的能力。而MPLS流量工程（TE）则是在数据转发之前完成流量控制，建立端到端的路由路径。从IPv4 QoS解决方案的发展来看，DiffServ和MPLS TE的结合满足了实时应用的QoS需求。本文提出了一种实时应用，如语音和视频会议的QoS性能研究的分组延迟变化（PDV）在区分服务与或不MPLS TE在IPv4/IPv6网络中使用优化网络工程工具（OPNET）。我们还研究了加速转发（EF），保证转发（AF）流量聚集，链路拥塞的相互作用，以及性能指标，如PDV的影响。分析了IPv4/IPv6网络中DiffServ与MPLS TE集成的有效性。本文表明，IPv6经历更多的PDV比他们的IPv4同行。
英文摘要：
Over the last years, we have witnessed a rapid deployment of real-time applications on the Internet as well as many research works about Quality of Service (QoS), in particular IPv4 (Internet Protocol version 4). The inevitable exhaustion of the remaining IPv4 address pool has become progressively evident. As the evolution of Internet Protocol (IP) continues, the deployment of IPv6 QoS is underway. Today, there is limited experience in the deployment of QoS for IPv6 traffic in MPLS backbone networks in conjunction with DiffServ (Differentiated Services) support. DiffServ itself does not have the ability to control the traffic which has been taken for end-to-end path while a number of links of the path are congested. In contrast, MPLS Traffic Engineering (TE) is accomplished to control the traffic and can set up end-to-end routing path before data has been forwarded. From the evolution of IPv4 QoS solutions, we know that the integration of DiffServ and MPLS TE satisfies the guaranteed QoS requirement for real-time applications. This paper presents a QoS performance study of real-time applications such as voice and video conferencing in terms of Packet Delay Variation (PDV) over DiffServ with or without MPLS TE in IPv4/IPv6 networks using Optimized Network Engineering Tool (OPNET). We also study the interaction of Expedited Forwarding (EF), Assured Forwarding (AF) traffic aggregation, link congestion, as well as the effect of performance metric such as PDV. The effectiveness of DiffServ and MPLS TE integration in IPv4/IPv6 network is illustrated and analyzed. This paper shows that IPv6 experiences more PDV than their IPv4 counterparts.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
