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EQUIP Inter-Operator Interfaces for End-to-End IP QoS

EQUIP Inter-Operator Interfaces for End-to-End IP QoS. István Cselényi , Niklas Borg ~ Telia Research AB, Sweden Péter Haraszti ~ eircom, Ireland Hamid Gharib ~ British Telecom (BTexaCT), UK Petra Schmid ~ Telekom Austria, Austria. EQUIP - Eurescom P1008. Participants

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EQUIP Inter-Operator Interfaces for End-to-End IP QoS

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  1. EQUIPInter-Operator Interfaces for End-to-End IP QoS István Cselényi, Niklas Borg ~ Telia Research AB, SwedenPéter Haraszti ~ eircom, IrelandHamid Gharib ~ British Telecom (BTexaCT), UK Petra Schmid ~ Telekom Austria, Austria

  2. EQUIP - Eurescom P1008 Participants • BT, eircom, Telefónica, Telekom Austria, Telia Timing • February 2000 - March 2001 Scope • technical and business models • metrics and measurements • interfaces

  3. Project Objectives • To produce specifications of the technical and business models, processes and interfaces needed to support automated inter-domain IP QoS management • To capture requirements and possibilities for service performance and traffic measurements

  4. Project Results 1. State of the art study~ project report, Q2 ‘00 2. Management scenarios and requirements~ project report, Q3 ‘00 3. Measurement metrics and methodologies~ technical information, Q4 ‘00 4. Interface and process specifications ~ technical specification, Q1 ‘01    Just an appetiser...

  5. Background • Interconnected IP network operators trading managed IP QoS, end-to-end • Bi-lateral Service Level Agreements (SLA) • QoS implemented in each operator’s domain • IETF IntServ, DiffServ, MPLS or combination(s) • IP QoS scenarios • basic IP QoS cross-connection, • VPN and • VoIP

  6. Trading Roles seller buyer Responsibilities IP Network Domain Service Provider Service Customer Service Customer’s Client Roles and Interfaces Interaction • Logical relationship between roles • Physical interfaces, protocols Trade the components of IP QoS services just as in e-commerce

  7. Multi-Operator Trading Model Service Provider Service Provider Logical interface Service Customer Service Customer Client BB/OSS BB/OSS BB/OSS Physicalinterface IPND A IPND T IPND Z Service Customer Client Service Customer Service Customer IP Network Domain

  8. Service customer client Management Interconnect Models (1) Cascade SLA SLA Business, Service & Network Management Functions Business, Service & Network Management Functions Business, Service & Network Management Functions Service customer Access (ingress) Transit Access (egress) Only provider – provider SLAs are shown.

  9. Service customer client Management Interconnect Models (2) Star SLA SLA Business, Service & Network Management Functions Business, Service & Network Management Functions Business, Service & Network Management Functions Service customer Access (ingress) Transit Access (egress) Only provider – provider SLAs are shown.

  10. Service customer client Network Management Functions Network Management Functions Network Management Functions Management Interconnect Models (3) Hub ‘I-operator’ Customer service management functions SLA SLA SLA Service customer Access (ingress) Transit Access (egress) Only provider – provider SLAs are shown.

  11. Interface Points (1) • Business perspective business relationship between seller/buyer • service management • Network perspectivephysical interfaces between systems • configuration • performance management • Plane-wise • control / management / user planes

  12. Interface Points (2) Service Provider S B S ManagementPlane S B Business Management Service Management Network Management Network Element- Management BB/OSS BB/OSS BB/OSS S S S B B B S B S ControlPlane Routing Signaling Shaping Marking Policing CAC Metering Router Network Ctrl. IF Router Network Ctrl. IF Router Network Ctrl. IF Protocol transfer Service customer Service customer client UserPlane IPND T IP Packet forwarding IPND A IPND T Access (ingress) Transit Access (egress)

  13. Service Provision Processes • identification • advertisement • (re)negotiation • activation/configuration • maintenance/monitoring/reporting • deactivation

  14. 1. Service Description (SD) Service Name, Service Performance Parameters (edge- to- edge delay, jitter, loss), Pipe | Funnel | Hose info propagation model, Provisioning (static, by RSVP, by BB, by both), Service Code Mark(s) (DSCP(s)), Action On Non-Conforming Traffic (drop, shape, remark) 2. Traffic Conditioning Specification (TCS) SLS Reference SD Reference, Traffic Descriptor (source/ dest.) Traffic Profile (rate, burst size) Scope (ingress, egress) 3. Traffic Forecast (TF) TCS Reference Projected Increase/ Decrease Time Service Description Traffic Conditioning Specification Traffic Forecast Basic Trading Model Buyer/ Seller/ (Customer) (Provider) (B) (S)

  15. Access (ingress) Transit Access (egress) (Src, Dest) (Src, Dest) (*, Dest) (*, Dest) (*,*) (*,*) Information Propagation Models Service customer client Pipe Service customer Service customer client Funnel Service customer Service customer client Hose Service customer Just a component of the SLA – not a management interconnect model!

  16. Trading Example ~ IP QoS Cross-Connection ~ • Similar to a BE transit service, but with defined QoS • End-to-end QoS • Service Customer can be: • DiffServ and/or IntServ aware • neither DiffServ nor IntServ aware IntServ DiffServ IntServ CR CR CR Service customer client Service customer BR BR ER ER BR BR CR CR CR

  17. Service Performance Measurement • Scenarios • Measurement Points • Metrics and Events • Measurement Methodologies • Reporting

  18. End-to-End Scenario (1) Business Perspective SellerService Provider SLA BuyerService Customer Service Customer Client BB/OSSIPND A BB/OSSIPND T BB/OSSIPND Z IPND A IPND T IPND Z

  19. End-to-End Scenario (2) Network Perspective End-to-end Service Performance Traffic Profile IPND ARouter Network IPND TRouter Network IPND ZRouter Network Service Customer Service Customer Client 2 1 3 4 5 6

  20. Transit Scenario (1) Business Perspective BuyerService Provider A SD SellerService Provider T ServiceProvider Z TCS TF Service Customer Service Customer Client BB/OSSIPND A BB/OSSIPND T BB/OSSIPND Z IPND A IPND T IPND Z

  21. Transit Scenario (2) Network Perspective Transit Service Performance Traffic Profile Service Customer Service Customer Client IPND ARouter Network IPND TRouter Network IPND ZRouter Network 2 1 3 4 5 6

  22. Measurement Points IPND A BB / OSS MP10 IPND A Access Network CR Service Customer (A-end) CPE LADP LES BSS CAC ER BR MP2 MP3 MP4 MP5 MP6 MP7 MP9 MP1 CR MP8 ER - edge router LES - local exchange switch CPE - customer premises equipmentBR - border router MP* - Measurement Point CAC - connection admission controlCR - core router BB - Bandwidth Broker BSS - broadband service selection router OSS - Operation Support System LADP - local access distribution point

  23. Metrics and Events Provider – Service Performance Metrics • availability + throughput • delay + jitter • loss End-to-end Service Performance Traffic Profile Service Customer (A-end) Service Customer Client (Z-end) IPND ARouter Network IPND TRouter Network IPND ZRouter Network 2 1 3 4 5 6 Customer – Traffic Profile Metrics • peak rate • maximum burst size • token bucket parameters

  24. Summary • Goal • automated SLS management system • Delivered results • State of the art study • Management scenarios and requirements • Measurement metrics and methodologies • Current work • Specify an inter-domain QoS management interface

  25. Future Work EURESCOM P1103 • The goal is to validate, extend and enhance the Inter-operator IP QoS provisioning framework of P1008 from both technical and business perspectives • Two case studies • compatibility with PSTN telephony services (e.g., IN service, Value Added services, control protocol aspects) • UMTS – IP QoS interoperability • Identifying accounting and pricing requirements and cost principles for this service (e.g., Support QoS rebates, etc);

  26. Information Project members here at the WS: István Cselényi (Istvan.I.Cselenyi@telia.se) Niklas Borg(Niklas.G.Borg@telia.se) Telia Research AB, SwedenPéter Haraszti(Peter.Haraszti@broadcom.ie) eircom, IrelandHamid Gharib(hamid.gharib@bt.com) British Telecom (BTexaCT), UK Petra Schmid(Petra.Schmid@telekom.at) Telekom Austria, Austria Project homepage: http://www.eurescom.de/public/projects/P1000-series/p1008/P1008.htm

  27. Telekom Austria Petra Schmid Armin Sumesgutner British Telecom, UK Hamid Gharib Chris Hatch Dave Milham Telefónica, Spain Vicente Cruz Sonia Escudero Telia Research, Sweden Anders Bergsten Niklas Borg István Cselényi eircom, Ireland Ludovic Fiard Péter Haraszti Andrew Kelleher Denis McCarthy Garett Thompson Thanks

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