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NSIS: Next Steps in Signaling A new IP QoS Signaling Protocol Georgios Karagiannis University of Twente

Next Steps In Signaling (NSIS). 2. Outline. Goal of this presentationMotivationNSIS overviewNSIS Transport Layer Protocol (NTLP)QoS - NSIS Signaling Layer Protocol (QoS-NSLP)Resource Management in Diffserv (RMD) QoS ModelComparison between RSVP (Resource Reservation Protocol) and QoS-NSLPConc

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NSIS: Next Steps in Signaling A new IP QoS Signaling Protocol Georgios Karagiannis University of Twente

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    1. NSIS: Next Steps in Signaling A new IP QoS Signaling Protocol Georgios Karagiannis University of Twente

    2. Next Steps In Signaling (NSIS) 2

    3. Next Steps In Signaling (NSIS) 3 Goal of the presentation Provide an overview of IETF standardisation on the new Internet QoS signaling protocol suite (NSIS + QoS-NSLP)

    4. Next Steps In Signaling (NSIS) 4 Motivation explosive growth of Internet, ever increasing demand for providing signaling over IP based networks signaling shortcomings of Resource Reservation Protocol (RSVP)

    5. Next Steps In Signaling (NSIS) 5 Key problems of RSVP (RFC4094) difficult to be used for QoS signaling in heterogeneous wired/wireless networks that are using different QoS models designed when mobility was in its infancy mobility not supported designed for IP multicast environments which where expected to become common have not been widely deployed today

    6. Next Steps In Signaling (NSIS) 6 NSIS overview IETF NSIS WG focuses on development of new protocol suite for manipulation of state along the data path (RFC 4080: NSIS framework) currently specified as on path signalling can be used, among others, for end-to-end QoS support in heterogeneous wired/wireless networks

    7. Next Steps In Signaling (NSIS) 7 NSIS overview Separating signaling message transport from signaling applications: NSIS Transport Layer Protocol (NTLP): composed of GIST (General Internet Signaling Transport), Transport layers, security layers NSIS Signaling Layer Protocol (NSLP): signaling application-specific functionalities (QoS-NSLP, NAT/Firewall NSLP for middlebox configuration, NSLP for metering configuration) NTLP and/or NSLP stateless operation: => scalability support

    8. Next Steps In Signaling (NSIS) 8 NTLP stateless + QoS-NSLP stateless / reduced state node

    9. Next Steps In Signaling (NSIS) 9

    10. Next Steps In Signaling (NSIS) 10

    11. Next Steps In Signaling (NSIS) 11

    12. Next Steps In Signaling (NSIS) 12

    13. Next Steps In Signaling (NSIS) 13

    14. Next Steps In Signaling (NSIS) 14

    15. Next Steps In Signaling (NSIS) 15 QoS NSIS Signaling Layer Protocol (QoS-NSLP) Signaling protocol separated from Resource Management Function (RMF) in nodes Actual QoS parameters encapsulated in Qspec (QoS Specification) object, which only read by RMF Supports different (local and end-to-end) QoS models (E.g., RMD, wireless (e.g.,UMTS), Intserv) that describe how RMF should interpret Qspec and how to grant and configure resources: very well suited for heterogeneous (wired/wireless) networks

    16. Next Steps In Signaling (NSIS) 16 QoS-NSLP: protocol basics

    17. Next Steps In Signaling (NSIS) 17

    18. Next Steps In Signaling (NSIS) 18

    19. Next Steps In Signaling (NSIS) 19 Resource Management in Diffserv QoS Model Resource Management in Diffserv (RMD): signaling support for Diffserv can be used for QoS support in third generation IP based access networks (e.g., UMTS) interior nodes do not store and use per-flow (per user) reservation states, instead: Stateless – no NTLP states and no QoS-NSLP states: measurement-based operation Reduced-states – no NTLP states and aggregated reservation states: reservation-based operation

    20. Next Steps In Signaling (NSIS) 20 Comparison between RSVP and QoS-NSLP

    21. Next Steps In Signaling (NSIS) 21 Conclusions and Future work NSIS protocol suite can be considered as a future Internet QoS signaling protocol: GIST passed IETF NSIS WG last call QoS-NSLP currently in IETF NSIS WG last call Future work: specify and standardise off path signaling

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