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ADANETS WP2: QoS management

ADANETS WP2: QoS management. ADANETS Workshop 29/01/2003 L.Maknavicius. QoS work scope. QoS in ADANETS: Optimal transport capacity of IP flows originating from different applications Mainly IP core networks QoS parameters expressed through an SLA/SLS

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ADANETS WP2: QoS management

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  1. ADANETS WP2:QoS management ADANETS Workshop 29/01/2003 L.Maknavicius ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0

  2. QoS work scope • QoS in ADANETS: • Optimal transport capacity of IP flows originating from different applications • Mainly IP core networks • QoS parameters expressed through an SLA/SLS • Service differentiation by per flow priority handling • Three-fold solution set: • Policy-based management for provisioning • Pro-active assurance • Multi-domain QoS negotiation The network will never do everything that everybody needs - Roch GUERIN, Univ. of Pennsylvania ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0

  3. Prioritizing the Traffic Flows:example Highest Priority: Voice and Video High Priority: Critical Data Applications Medium Priority: E-mail, Transactional Apps Low Priority: Web Traffic, FTP ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0

  4. SLA SLA QoS Perf. “Transparent” Network Cloud From the contract to the network Application Server User access to wants Ethernet Ethernet ATM/FR IP radius PPP DNS authorize MPLS DHCP IKE authenticate NAT firewall classify meter shaping filter queueing (re)mark routing encrypt dropper decrypt ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0

  5. SLA SLA Policy Server Mediation / Translation Overall management view Customer Service Template/ Offer Service inventory SLS Definition Assurance config. Provisioning Assurance Actions, indicators SP2 SP1 ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0

  6. Layer 7 Application/system-related QoS: client/server response time, data backup, srv performance, … Upper layers QoS based policy mgmt (Policy framework, COPS) Bandwidth brokers Layer 4 Traffic mgmt Vertical QoS mechanisms (between adjacent lavels) IntServ / RSVP DiffServ Layer 3 QoS routing/ CBR MPLS Layer 2 Net- work elements QoS over ATM QoS over optics (SDH) QoS over Frame Relay QoS over Ethernet Horizontal QoS mechanisms (consistent techniques shared by all network nodes, such as signalling, priority labelling, …) Relevant standards (1):QoS mechanisms overview ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0

  7. Policy Server Policy Repository Policy mgmt tool PDP COPS PEPs Relevant standards (2):IETF • IntServ - per-micro flow resource reservation • DiffServ – per class traffic prioritization • MPLS - forwarding scheme • TE – resource/performance optimization • CBR – route selection wrt objectives & constraints • Policy-based management • Models to represent policy information: • PCIM, PCIMe, QPIM, IPVPN ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0

  8. QoS mgmt Framework (1):overview ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0

  9. QoS mgmt Framework (2):network provisioning ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0

  10. QoS mgmt Framework (3):service provisioning ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0

  11. QoS mgmt Framework (4):TE (assurance & netw optimizn) ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0

  12. QoS Framework instantiationfor service provisioning ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0

  13. Assurance part:proactive SLS management Check SLA commitments + classify violations Alarm filtering & correlation Determine correction actions ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0

  14. desired QoS SLS1 accept/reject/proposal SLS2 Multi-domain QOS negotiation:protocol- & PBM-based approach ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0

  15. ADANETS WP2 – QoS mgmt:status & conclusions • Achieved: • Comprehensive QoS management Framework • Pro-active SLS violation management • Task list: • D2.1 “Analysis of standards on QoS provisioning on IP networks & proposition of QoS mgmt framework” – available (public) • D2.2 “Assurance of SLS & QoS commitments”(restricted) • D2.3 “Defining specification for QoS negotiation over multiple network domains” - available (public) • D2.4 “Policy server demo” – scheduled for 2003 • TBD: • QoS end-to-end vision • Other Frwk instantiations wrt demo technical choices • Requests: • Linas.Maknavicius@alcatel.fr ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0

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