1. TEQUILA Traffic 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: 1.Definition of Service Level Specification (SLS) 2.Negotiation, Monitoring and Enforcement of Service Level Specifications (SLSs) 3.Intra-domain Traffic Engineering to meet SLSs 4.Inter-domain SLS negotiation and QoS routing to enforce end-to-end quality across the Internet

3. The TEQUILA consortium

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

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

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 = (ingress, egress) Performance Guarantees Flow Id Traffic Conformance Excess Treatment Scope Flow Identification Traffic Conformance Testing Excess Treatment 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.htmlhttp://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.htmlhttp://www.ist-tequila.org/sls.html –Drafts, Mailing list etc.

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