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C ooperating L ayered A rchitecture for S DN (CLAS) < draft-contreras-sdnrg-layered-sdn-00>

C ooperating L ayered A rchitecture for S DN (CLAS) < draft-contreras-sdnrg-layered-sdn-00>. Luis M. Contreras Telefónica I+D Carlos J. Bernardos Universidad Carlos III de Madrid (UC3M) Toronto, SDNRG WG, July 2014. 1. Rationale.

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C ooperating L ayered A rchitecture for S DN (CLAS) < draft-contreras-sdnrg-layered-sdn-00>

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  1. CooperatingLayeredArchitectureforSDN (CLAS)<draft-contreras-sdnrg-layered-sdn-00> Luis M. Contreras Telefónica I+D Carlos J. Bernardos Universidad Carlos III de Madrid (UC3M) Toronto, SDNRG WG, July 2014 1

  2. Rationale Existing proposals for SDN centralize control capabilities with very different objectives and purposes No separation between services and transport control No clear responsibility for service provision and delivery Complicated reutilization of components for delivering different services Monolithic control architectures, driving to lock-in Difficult interoperability, then difficult interchange of some modules by others No clear business boundaries 90th IETF, Toronto 2

  3. Cooperating Layered Architecture for SDN Key concept: separation of the control functions associated to services from those associated to transport Service control becomes independent from transport control Functional Strata Service stratum: functions related to the provision of services (including capabilities exposed to external applications) Transport stratum: functions related to the transfer of data between communication end-points Plane separation Control plane: control of resources in each strata Management plane: management of resources and control plane in each strata Resource plane: resources required for a given service (can be or not the termination points of a transport function) Despite differentiation, tight cooperation is needed for an efficient service provision 90th IETF, Toronto 3

  4. Cooperating Layered Architecture 90th IETF, Toronto 4

  5. Deployment Scenarios Full SDN environment Multiple Service Strata associated to a single Transport Stratum Single Service Stratum associated to a multiple Transport Strata (And 1:1 and N:N cases, of course) Hybrid environments SDN-based Service Stratum associated to a legacy Transport stratum Legacy Service Stratum associated to a SDN-based Transport stratum 90th IETF, Toronto 5

  6. Potential use cases / scenarios (for further study) NFV SDN Ctrller 90th IETF, Toronto 6

  7. Potential use cases / scenarios (for further study) ACTN draft-ceccarelli-actn-framework-02 Control Arch, sect. 6.1 90th IETF, Toronto 7

  8. Potential use cases / scenarios (for further study) ABNO draft-farrkingel-pce-abno-architecture-08 CSO case, sect. 3.7 90th IETF, Toronto 8

  9. Next Steps After presenting CLAS to the community in IETF 90 we intend to work in the following areas: Document a gap analysis Define and document use cases Describe requirements for interface definition between strata Security (in the communication between strata) Others(e.g., monitoring, inter-domain provision, SLA, etc) 90th IETF, Toronto 9

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