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TEQUILA T raffic E ngineering for Qu ality of Service in the I nternet at La rge Scale

The TEQUILA project aims to provide end-to-end guaranteed QoS services in the Internet by defining service level specifications, negotiating and monitoring them, and implementing traffic engineering techniques. The project focuses on inter-domain SLS negotiation and QoS routing to enforce quality across the Internet. It assumes a public, multi-vendor network with open interfaces and utilizes IP-based, DiffServ, and MPLS technologies.

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TEQUILA T raffic E ngineering for Qu ality of Service in the I nternet at La rge Scale

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  1. TEQUILATraffic Engineering for Quality of Service in the Internet at Large Scale Kostas G. Anagnostakis TERENA Project partially funded by the EC under the IST Programme

  2. Objectives Provide End-to-End guaranteed QoS services: • Definition of Service Level Specification (SLS) • Negotiation, Monitoring and Enforcement of Service Level Specifications (SLSs) • Intra-domain Traffic Engineering to meet SLSs • Inter-domain SLS negotiation and QoS routing to enforce end-to-end quality across the Internet

  3. The TEQUILA consortium

  4. Basic Technical Assumptions • Public, Multi-vendor Network with Open Interfaces • IP-based, DiffServ and MPLS enabled Network The Internet

  5. TEQUILA subsystems Policy Management VPN/LL Manager SLS management H.323 GK SLS Subscription SLS invocation Traffic Engineering Host Application Data Plane Monitoring TEQUILA system

  6. Service Level Specifications • SLS - what is it all about ? • SLS = basic entities for describing & building customer services • SLS describes the traffic characteristics of IP services & the QoS guarantees offered by the DiffServ network • SLS contains technical parameters and is part of the SLA • Motivation for an SLS standard • Dynamic management & negotiation of SLSs • between customer/ISP - ISP/ISP • setting of SLS parameters by QoS Applications • Automation of SLS Management (ISPs) • Open interfaces in the multi-vendor Internet environment

  7. SLS Template - Overview • Scope • Flow Identification • Traffic Conformance Testing • Excess Treatment Flow Id Traffic Conformance Excess Treatment Scope = (ingress, egress) Performance Guarantees • Performance Guarantees • Service Schedule • Reliability

  8. SLS Examples & Applicability • Flow Types • Macroscopic & Microscopic flows • Scope Models • Point-to-Point, Point-to-Multipoint & Multipoint-to-Point • Performance Guarantees • Quantitative Premium Services & Qualitative “Olympic” Services • Customer Services • SLSs as building blocks for bi-directional services and VPNs • Management & Control Applications • Long-term SLS subscriptions & short-term SLS invocations

  9. Towards an SLS standard • Presence at the Pittsburgh IETF • Draft-tequila-diffserv-sls-00.txt • Interest from industry, other IST projects, TERENA TF-NGN • SLS Mailing List • See http://www.ist-tequila.org/sls.html • Potential request for a BoF session at the next IETF • You are encouraged to participate

  10. If you are interested • Workshop on Internet Design for SLS delivery • Amsterdam, 25th and 26th of January, 2001 • Details will be announced soon • TEQUILA Web Site • http://www.ist-tequila.org/ • publications, presentations, deliverables, Internet Drafts, mailing list information and archives • Standard SLS activity • http://www.ist-tequila.org/sls.html • Drafts, Mailing list etc.

  11. TEQUILA Functional Architecture Policy Management Pol. Mgt tool SLS Repos. Policy Consumer SLS management Interdomain SLS ND Traffic Forecast SLS Subs DRtM DRsM SLS invoc. Routing Traffic Engineering SLS M. Network M. Node M. Data Plane TC PHB Monitoring

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