Budget-based QoS management infrastructure for All-IP network

2001

1 $EVWUDFW AQUILA, a joint European research project funded by EU, defines and implements a new Resource Control Layer (RCL) to enable dynamic end to end QoS provisioning in IP networks for QoS sensitive applications in a scalable and efficient way. The RCL controls the resource usage in an IP backbone that supports different transport services through the 'LIIHUHQWLDWHG 6HUYLFHV (DiffServ) approach. In the DiffServ model the Admission Control (AC) is performed by the elements at the edge of the network. To gain scalability, the AC decision must be based on locally stored information at these elements – mainly resources availability – and keep low the amount of interactions with the rest of the network. To gain efficiency, the availability of resources within the network must be dynamically tracked to some extent. To meet these twofold objective, in the framework of the AQUILA architecture a distributed provisioning architecture is proposed based on the concept of dynamical Reso...

2007

The DiffServ architecture provides a scalable mechanism for QoS introduction in a TCP/IP network. DiffServ model is based on the aggregation of traffic flows at an ingress (or egress) point of a network and the IP packet marking for different priority flows, according to several classification criteria. Two approaches exist in the DiffServ architecture: the Absolute and the Relative. In Absolute DiffServ, an admission control scheme is used to provide QoS guarantees as absolute bounds of specific QoS parameters. The Relative DiffServ model provides QoS guarantees per service class expressed with reference to guarantees given to other classes defined. Our study presents a QoS Provisioning & Network Management System. This system is based on an extension of the network management architecture followed and implemented within the scope of the European IST Project MANTRIP. MANTRIP network management system supports quality of service configuration and monitoring in IP networks. Our exten...

IEEE Communications Magazine, 2003

This article describes the current evolution of QoS architectures, mechanisms, and protocols in the Internet, as it is ongoing in the framework of the European Union funded research projects on premium IP networks. A short review of the proposed standard approaches to QoS (e.g., differentiated services, integrated services, and label switching technologies) is given. Then we focus on the state-of-the-art architectures, mainly based on DiffServ concepts. Several issues arise when trying to implement these architectures in the real world: QoS aspects, network monitoring of the offered QoS, and end-user control of received QoS. The article then discusses the existing results and the current direction of European research and development in these areas.

Providing QoS-guaranteed services in current installed networks is an important issue, but only the deploying QoS services is not enough to guarantee their success: QoS management must also be provided. Nowadays, police-based management addresses this need, but such management is not enough either. Network managers often deal with QoS tasks that cannot be performed using only policy-based management. This paper describes six important QoS management-related tasks (QoS implementation, operation maintenance, discovery, monitoring, analysis and visualization) and shows solutions that can help managers proceed with these tasks. Unfortunately, these solutions are independent from each other, leading to a scenario where integration is difficult. To solve this lack of integration, QAME (QoS-Aware Management Environment) has been developed. QAME provides support to allow the execution of the defined QoS tasks in an integrated fashion.

This paper shortly describes the IP QoS System which offers strict quality of service (QoS) guarantees in IP-based networks and supports a number of, so called, classes of services. Such solution requires to implement in the network a set of QoS mechanisms and algorithm working on packet, connection request and provisioning levels. Furthermore, we require signaling system for informing the network about new connection request and network resource allocation capabilities for providing required resources to given connection. The IP QoS System is based on the next generation networks (NGN) and differentiated services (DiffServ) architectures and, at least for now, it is designed for single domainonly

2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333), 2002

With the development of high-speed backbone network, more and more traffic load is pushed to the Internet edge equipments and end hosts. Newly emerged bottleneck problems in end systems ask for deploying Quality of Service (QoS) in them. Meanwhile, the tremendous traffic brought by multimedia communications asks for End-to-End QoS. Facing these facts and challenges, a framework of deploying QoS in end systems is presented in this paper. The framework aims at both relieving bottleneck problems through utilizing limited resources efficiently and guaranteeing End-to-End QoS by integrating network QoS and end system QoS. In addition, the framework combines the functions of managing both network QoS and end system QoS.

Journal of telecommunications and information technology, 2011

This paper shortly describes the IP QoS System which offers strict quality of service (QoS) guarantees in IPbased networks and supports a number of, so called, classes of services. Such solution requires to implement in the network a set of QoS mechanisms and algorithm working on packet, connection request and provisioning levels. Furthermore, we require signaling system for informing the network about new connection request and network resource allocation capabilities for providing required resources to given connection. The IP QoS System is based on the next generation networks (NGN) and differentiated services (DiffServ) architectures and, at least for now, it is designed for single domain only. Keywords—classes of service, DiffServ, multi-service networks, NGN, quality of service.

The Internet evolution delineated during the last years has necessitated the need of quality of service differentiation among IP flows that expose different characteristics regarding bandwidth, delay, packet loss, and other QoS-relative parameters. This paper describes in brief the specification and implementation of a layered architecture, which achieves the aforementioned requirements through the definition of specific modules that cater for all the aspects of quality: user-oriented reservations, selection of the appropriate traffic class, admission control, router setup, resource management and measurements. The main innovative feature of the architecture is the definition of the Resource Control Layer that resembles a distributed Bandwidth Broker and offers a feasible way to implement admission control at the edges and manage the resources of the network. The paper focuses on the definition of specific Network Services targeting different kinds of applications. They are implemented within the network through the appropriate Traffic Classes, which properly set various parameters of the network routers.

IEEE Real Time Technology and Applications Symposium, 1999

This paper describes a distributed quality of service (QoS) management architecture and middleware that accommodates and manages different dimensions and measures of QoS. The middleware supports the specification, maintenance and adaptation of end-to-end QoS (including temporal requirements) provided by the individual components in complex real-time application systems. Using QoS negotiation, the middleware determines the quality levels and resource allocations of the application components. A prototype was implemented to demonstrate its practicality. The paper also discusses how protocol parameters are determined in our architecture and what their performance implications are.

Lecture Notes in Computer Science, 2002

The Differentiated Services (DiffServ) architecture has been proposed as a scalable solution for providing service differentiation among flows. Towards the enhancement of this architecture, new mechanisms for admission control and a new set of network services are proposed in this paper. Each network service is appropriate for a specific type of traffic and is realized through its own network mechanisms, which are the Traffic Classes. Traffic Classes provide the traffic handling mechanisms for each Network Service and are composed of a set of admissio n control rules, a set of traffic conditioning rules and a per-hop behavior (PHB). Different traffic-handling mechanisms are proposed for each network service and are implemented with the use of the OPNET simulation tool. A large-scale network is used as a reference topology for studying the performance and effectiveness of the proposed services.