QoS experiences in native IPv6 networks (original) (raw)

QoS Experiences in native IPv6 GRNET and 6NET networks

2005

Adoption of IPv6 technology has been accelerated in the last few years but there is limited experience in the deployment of Quality of Service (QoS) for IPv6 traffic in backbone networks. As available software and hardware is designed to handle IPv4 packets, there is a need to accurately measure the performance of QoS mechanisms in an IPv6 environment. This paper discusses tests in the deployment of IPv6 QoS in core networks, namely the production dual stack GRNET and the IPv6-only 6NET networks, using both hardware and software platforms. In either case, we succeeded in delivering advanced transport services to IPv6 traffic and provided different performance guarantees to portions of traffic. The deployed QoS schema was common for IPv6 and IPv4; in most cases both v4 and v6 traffic exhibited comparable performance per class while imposing no significantly different overhead on network elements. A major conclusion of our tests is that the IPv6 QoS mechanisms are efficiently supported with state-of-the-art router cards at gigabit speeds.

IntServ6: An Approach to Support QoS over IPv6 Networks

2005

This paper proposes an approach to support Endto-End Quality of Service over IPv6 networks. In our solution, IPv6 flow labels are used to give better performance into the process of packet classification on network routers. In order to evaluate our proposal, a router model is obtained and it is compared with other technologies as IntServ and MPLS. As result, we obtain a solution with benefits of QoS support and label switching in IPv6 routers. *

Comparison of QoS performance between IPv6 QoS management model and IntServ and DiffServ QoS models

An increasing number of emerging Internet applications require better than best effort quality of service (QoS) that is offered by the current Internet. Applications such as voice over IP (VoIP), video on demand (VoD) and e-commerce applications need end-toend QoS guarantees defined in terms of throughput, delay and loss rate [1]. However, QoS guarantee for these services require adding QoS algorithms that perform a number of resource management functions such as admission control, resource reservation and traffic monitoring. These functions can significantly increase the complexity and affect the scalability of the network. In this paper, three QoS schemes, integrated services (IntServ) [2], differentiated services (DiffServ) [3] and IPv6 QoS management, are compared with respect to QoS guarantee requirements. Also, the scalability and complexity issues are discussed for each one of them. The IPv6 QoS management model [4] performs well during the simulation. It is also simple and scalable when it is implemented.

IPv6 deployment: Real time applications and QoS aspects

Computer Communications, 2006

This paper gives an overview of the issues related to the QoS mechanisms under IPv6 and the transition of applications to the new Internet protocol. We describe the implementation and testing of a QoS service on IPv6 networks, which is based on the DiffServ architecture (expedited forwarding) and provides strict priorities to packets that are produced from real time applications. The service was implemented and tested at the 6NET large-scale IPv6 network, and additional advanced testing was performed in a local testbed. We present and analyze the results from our tests under a number of different scenarios. In addition, we focus on issues regarding application transition to IPv6 and we briefly discuss as a case study the transition of OpenH323 protocol stack to support IPv6. We also discuss the usage and the expected impact of the new Flow Label field in the IPv6 header. q

QoS Provisioning Using Latency for IPV 6

2015

The main aim of the paper is to perform an unbiased empirical performance analysis between the two protocol stacks:IPv4 and IPv6, and how they are related to the performance on identical settings, and also focuses on QoS provisioning using latency. Here we investigate the latency while using TCP and UDP. Here two OSs (W2K and Linux Ubuntu) are configured with the two versions of IP and empirically evaluated for performance difference in terms of latency. This proposed QoS scheme is especially designed for transitional IP network containing both IPv4 and IPv6 network nodes, which is the reality in the process of internet transition from IPv4 to IPv6. Our simulation results show that the some application using IPV6 can be efficient manner. The findings reveal several significant factors which affect IPv6 implementation.

IPv6 QoS testing on dual stack network

Proceedings of the 2nd …, 2006

This paper presents our work regarding the testing and evaluation of DiffServ QoS mechanisms over IPv6 and IPv4 in dual stack software based platforms. IPv6 introduces some additional features (like flow label) and the current support for QoS mechanisms in IPv6 implementations approaches the corresponding QoS support in IPv4. Therefore, a number of tests with DiffServ QoS mechanisms applied on IPv6 traffic have been carried out on a testbed created specifically for this purpose, in order to validate the mechanisms and evaluate the router's overall performance. Our evaluations cover the load incurred to the routing devices from the implementation of the mechanisms, the level of support for QoS IPv6 features and the comparison of performance over IPv4 and IPv6.

IntServ6: an approach to support QoS over IPv6 wired and wireless networks

European Transactions on Telecommunications, 2008

In this paper we propose a new approach for Quality of Service (QoS) support on Internet. This approach, named IntServ6, is based on the Integrated Services Architecture (ISA). It takes advantage of the IPv6 header flow label field to improve a set of the standard ISA properties such as reservations within tunnels, flows aggregation and interconnection with MPLS transport networks. IntServ6 can be used for QoS support in IPv6 wired and wireless networks. This paper describes the IntServ6 operation and performance evaluation over both environments. Evaluation results show that this approach has a better router performance with respect to the standard IntServ. Thus, IntServ6 reduces the mean packet delay and reduces the packet delay dependence with the mobility.

A Prototype and Roadmap for Transition to IPv6 with Performance Evaluation

Research Journal of Applied Sciences, Engineering and Technology, 2017

The migration from IPv4 to IPv6 can not be achieved in a brief period, thus both protocols co-exist at certain years. IETF Next Generation Transition Working Group (NGtrans) developed IPv4/IPv6 transition mechanisms. Since Iraq infrastructure, including universities, companies and institutions still use IPv4 protocol only. This research article tries to highlight, discuss a required transition roadmap and extend the local knowledge and practice on IPv6. Also, it introduces a prototype model using Packet tracer (network simulator) deployed for the design and implementation of IPv6 migration. Finally, it compares and evaluates the performance of IPv6, IPv4 and dual stack using OPNET based on QoS metrics such as throughput, delay and point to point utilization the key performance metrics for network with address allocation and router configuration supported by Open Shortest Path First (OSPF) routing protocol. In addition it compares dual-stack to the tunneling mechanism of IPv6 transition using OPNET. The results have shown that IPv6 network produces a higher in throughput, response time and Ethernet delay, but little difference in packet dropped, additionally the result in TCP delay, Point to point utilization shows small values compared to dual-stack networks. The worst performance is noted when 6 to 4 tunneling is used, tunneling network produces a higher delay than other scenarios.

Service quality measurements for IPv6 inter-networks

Twelfth IEEE International Workshop on Quality of Service, 2004. IWQOS 2004., 2004

Measurement-based performance evaluation of network traffic is becoming very important, especially for networks trying to provide differentiated levels of service quality to the different application flows. The non-identical response of flows to the different types of network-imposed performance degradation raises the need for ubiquitous measurement mechanisms, able to measure numerous performance properties, and being equally applicable to different applications and transports. This paper presents a new measurement mechanism, facilitated by the steady introduction of IPv6 in network nodes and hosts, which exploits native features of the protocol to provide support for performance measurements at the network (IP) layer. IPv6 Extension Headers have been used to carry the triggers involving the measurement activity and the measurement data in-line with the payload data itself, providing a high level of probability that the behaviour of the real user traffic flows is observed. End-to-end one-way delay, jitter, loss, and throughput have been measured for applications operating on top of both reliable and unreliable transports, over differentcapacity IPv6 network configurations. We conclude that this technique could form the basis for future Internet measurements that can be dynamically deployed where and when required in a multi-service IP environment.