SEQUIN Document Library

Presentation by M. Campanella, GÉANT Access Port Managers (APM) Meeting, Paris, France, 21 September 2001

Presentation by Afrodite Sevasti et al, 16th International Workshop on Communications Quality & Reliability (CQR 2002), Okinawa, Japan, May 14-16 2002

Presentation by Simon Leinen, presentation at SWITCH national technical conference, Zurich 15 November 2001

Presentation by R. Sabatino, 2nd International Workshop on Quality of future Internet Services QofIS 2001, Coimbra, Portugal, 24-26 September 2001.

This addendum specifies the implementation architecture for the Premium IP service described in Deliverable D 9.1, which aims at offering the equivalent of an end to end virtual leased line service at the IP layer across multiple domains. The architecture is targeted at the GÉANT network and is applicable to each connected NRENs and local Diffserv domains. The architecture leverages the scalability features of Differentiated Services and takes a pragmatic approach to balance configuration complexity and benefits.

The document elaborates a template for the Service Level Agreement for the Premium IP service. The template is initially targeted for the Service Level Agreements between an NREN and the GÉANT network, but is general enough to be applied between any communicating DiffServ domains in order for them to provide the IP Premium service. It states also the requirements to provide an end to end service on the multi-domain European network.

SEQUIN investigates methods for providing QoS differentiated services over the IP-based networks such as the GÉANT network. Initially, the project defined a framework for supporting IP Premium service and described the procedures for establishing Service Level Agreements (SLAs) amongst networks such as GÉANT and the NRENs. In succession, SEQUIN investigates methods for monitoring the network behaviour and techniques for assessing the quality of delivered services to the end-users, i.e. NRENs. This document reviews various IP measurements methods and describes monitoring architectures that may be deployed in large-scale backbone networks. Furthermore, it provides a general framework for monitoring QoS provisioning in GEANT.

This deliverable provides a description of the international testbed that will be used to validate the architectural models and the technology to be used to provide end-to-end QoS services. It provides a description of the functions in hardware required to provide guarantees on the four parameters which characterise QoS, as defined in Deliverable 2.1, together with a description of the testing activity that will be carried out.

This deliverable describes the approach of the SEQUIN consortium towards dissemination of project results into the scientific and networking communities, and strategies for the application of these results in the implementation of novel network services for the European research community.

The suggested solution for QoS is Premium IP. This deliverable addresses the technological, operational and management aspects of implementing Premium IP on a wide scale on operational networks such as GEANT and NRENs.

This deliverable provides an overview of the proof of concept testing carried out to verify the functionality of Premium IP. It outlines tests of basic functionality required from routers and outlines tests carried out in the wide area and connecting real users with requirements for QoS guarantees.

During the course of the project a model for QoS provisioning in GÉANT network has been defined and implemented as the IP-Premium service. Several test scenarios have been performed in multiple-domain environment including five European NRENs and GÉANT network. H.323 traffic patterns have been identified and used in traffic simulators for metric measurements. This deliverable describes the results of test-case setup, which involved real users of H.323 video.

by Wim Barbaix (IST-ATRIUM)

by Nicolas Simar (DANTE/SEQUIN)