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Scalable, efficient, personalized, end-to-end QoS Provisioning

Polyrakis Andreas apolyr@noc.ntua.gr Dimitrios Kalogeras dkalo@noc.ntua.gr 21.03.2002. Scalable, efficient, personalized, end-to-end QoS Provisioning. GRNET - NTUA. Contents. Motives & Targets Approach LAN Archtiecture WAN Architecture Demo. Motives. Issues in QoS Provisioning

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Scalable, efficient, personalized, end-to-end QoS Provisioning

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  1. Polyrakis Andreasapolyr@noc.ntua.gr Dimitrios Kalogerasdkalo@noc.ntua.gr 21.03.2002 Scalable, efficient, personalized, end-to-end QoS Provisioning GRNET - NTUA

  2. Contents • Motives & Targets • Approach • LAN Archtiecture • WAN Architecture • Demo

  3. Motives • Issues in QoS Provisioning • Personalization vs Automation • (LDAP  policies) • Personalization vs Scalability • (personalized policies  inter-domain signaling) • Scalability vs Automation • (DiffServ  RSVP) • Automation vs Personalization • (RSVP  LDAP) • Requirements • Scalable • Personalized • Automated (efficient) • End-to-End

  4. Projects’ Targets • «Almost» AutomaticQoS Provisioning perUser /Application • Almost ~ • Atomated Administratevelly • (Semi) automated from user • Personalizedservice • Allocation from Administrator • User’s request • End-to-End (inter-domain)

  5. Basic Assumptions • ApproachLAN – WAN • WAN: ArchitectureDiffserv • LAN:ArchitectureRSVP • ABorderrouter (congestion) inLAN • Internal LANOverprovisioned – GigE • Congestion onegress of WAN’s POPs

  6. Approach • LAN problem • Authentication • Personalization • Signaling • DiffServ markingof egress traffic • Check ingress traffic BEFOREadmitting

  7. Trust Model • Egress- Shengen Model • Check onExit • Ingress– VisaModel • Check on entrance • I.e.: Gold traffic betweenNTUAUoP • Check fron NTUA on Exit • Free transit in GRnet • Check from UoP on entrance

  8. End-2-End? • QoS Request • Accept and Process from LAN PDP • LAN Installation- Automatic Reception from WAN • Reception of reverse traffic on WAΝ’s PoP • Symmetric Procedure on the other end provides Bidirectional end-2-end Qos

  9. LAN Approach

  10. Modelling • Profiles • Set ofallowedQoS configuration • Assigned (default QoS Policy) • Requested (Rights forQoS Requests) • Application of Profiles on Users • Policies • Logging of requirements • Application of Policies on routers • Policies + Profiles + Authentication info (+user requests)Implementation of Targets

  11. Implementation – Policies • QoS Policy – Modular QoS CLI (MQC) • Classes – group of traffic with ACLs • Action – “priority – Bandwidth” • Olympic Metal “Gold, Silver, Bronze” • Preconfigured ratioG-S-B

  12. Implementation - LDAP • Profiles • Flow Description , Possible CLasses) • Assigned – Requested • More conditions • Users ε profiles PDP Monitoring &Accounting

  13. Implementation – User Interface • Thin Client – Fat Server • Web application • Secure Authentication ( Username, Password), secure cookies, One-Time Passwords • Soft-state (RSVP Like) • Signaling (manual) • Automated signaling via RSVP not yet implemented

  14. Implementation – Policy Server • Central Server • Policy Decision Point (PDP) • Data Base

  15. Implemetation - DataBase • AuthenticationInformation • Registered resources from (IP, Ports) • User Profiles from LDAP • User’s Request • ACL for (MQC) • Furthermore: Statisitics, monitoring data

  16. Implementation - PDP • Data Combination in DataBase • ACLs Creation • UploadingACLsonrouter • Step 1:Database clean up • expired users (authenticated resources) • expired requests, requests of expired deletedusers • of policies of deleted users • Of policies with class not matchingacls • Step 2:monitoring-accounting application. Policy inactivation when daily usage has expired • user • Class • User’s profile • Step 3:Revision of acl table • Deletion if oldrows • Rename of old entries to new ones • Creation of newrows • Step 4:Creation of incoming and outgoing acl • Step 5:Upload of aclsonTFTPand HTTP server • Step6 6:Comand router to download outgoing acl

  17. Basic LAN Architecture

  18. WAN Approach

  19. Extension ofQoS RequestsonBackbone • Installation of incoming policy of every memberaccording to his requirement • Configurationof every member on backbone LDAP • Connected Router • Static / Dynamic Policy • Dynamic {url, refresh rate} • Communication with member PDP • Easy application on Internet connection (Geant) • Policy communication with ( HTTP)

  20. WAN - Architecture

  21. Extension of QoS on Remote side • Check Incoming policy from every member • Autonomy • NO Backbone management (installation …) • Symmetric implementation on outgoing policy • Extension: Automatic Installation of reverse direction SLAs • Between members • Between members andGRNET

  22. Demohttp://linux.noc.ntua.gr/qos

  23. Acknowledgements • Kostas Kalevras • Thanasis Douitsis • Rania labrou

  24. Ευχαριστούμε!!! ? Ερωτήσεις ????

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