Service Level Specifications, Cornerstone to E2E QoS across the Internet?
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1 Service Level Specifications, Cornerstone to E2E QoS across the Internet? Yves T Joens Project Manager Network Strategy Group Yves T Joens, Washington October page n 1»
2 Outline IP Research in Europe The TEQUILA look on QoS over the Internet Putting this in the perspective of ongoing standardization Service Level Specification, Cornerstone to e2e QoS? Yves T Joens, Washington october n 2»
3 IP research in Europe 5 the Framework Program : Thematic Programmes Quality of life and management of living resources User-friendly information society (IST) Competitive and sustainable growth (GROWTH) Energy, environment and sustainable development (EESD) Yves T Joens, Washington october n 3»
4 IP research in Europe Systems and services for the citizen New methods of work and electronic commerce Multimedia content and tools Essential technologies and infrastructures IST-TEQUILA IST-AQUILA IST-CADENUS Yves T Joens, Washington october n 4»
5 The TEQUILA system VPN/LL Manager SIP server/proxy Host Application H.323 GK SLS Subscription SLS invocation Enterprise Network Host Application RSVP Path/Resv TEQUILA system Yves T Joens, Washington october n 5»
6 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 Yves T Joens, Washington october n 6»
7 SLS Management Subsystem?? WG 80 Traffic Forecast 40 Management Plane SLS Subscription SLS Subscription Customer/ ISP 45 Control Plane SLS invocation SLS Invocation RAP WG (COPS/Diffserv PIB) Data Plane Data Transmission Traffic Conditioning 40 Yves T Joens, Washington october n 7» Diffserv WG Intserv WG / ISSLL WG
8 Traffic Engineering Subsystem IP based or MPLS based <10< 40 <30< Network Dimensioning Network Planning MPLS WG TE WG OSPF / ISIS WG IDR WG (BGP) Dynamic Route Management Routing Dynamic Resource Management Diffserv WG / MIB RAP WG / PIB PHB configuration Yves T Joens, Washington october n 8»
9 Data Plane Subsystem RAP WG (COPS/Diffserv PIB) Diffserv WG Traffic Conditioning Diffserv PHB configuration Yves T Joens, Washington october n 9»
10 Monitoring Subsystem IPPM WG RTFM WG SLS Monitoring Network Monitoring Node Monitoring NE Yves T Joens, Washington october n 10»
11 Policy Subsystem Policy Management Tool Policy Consumer Policy Repository POLICY WG Policy Target Service provisioning policies Network operation policies Yves T Joens, Washington october n 11»
12 Service Level Specifications Introduction SLS - what is it all about? 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 standardised formalism Automated & Dynamic management & negotiation of SLSs Automation of SLS Management (ISPs) between customer-isp and ISP-ISP Open interfaces in the multi-vendor / provider Internet environment Yves T Joens, Washington october n 12»
13 SLS template (2) Scope: The geographical region over which the QoS is to be enforced pipe, hose & funnel models Flow Id: stream of IP packets sharing at least one common characteristic provides info for packet classification (BA or MF classification) Traffic Conformance Testing The set of actions allowing to identify in- & out-of-profile packets of the IP stream identified by Flow Id Yves T Joens, Washington october n 13»
14 SLS template (3) Excess Treatment: dropping, shaping, (re)-marking of excess packets Performance Guarantees These are the service guarantees that the network offers to the customer (SLS) for the packet stream identified by Flow Id, over the geographical region defined by Scope Four (measurable) parameters delay optional quantile jitter optional quantile packet loss throughput Yves T Joens, Washington october n 14»
15 Conclusions Standardisation of SLS template is a necessity (basic parameters, leave room for differentiation ) Today a joint effort between EC funded projects (known as the NGN forum) is looking into this IETF I-D : draft-tequila-diffserv-sls-00.txt (July 2000) Seeking support for starting this activity at the level of the IETF (maybe BoF session at the IETF San Diego meeting) Further information : contact yves.tjoens@alcatel.be Yves T Joens, Washington october n 15»
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