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Torsten Braun, Universität Bern braun@iam.unibe.ch , cds.unibe.ch

ICT LEIT in H2020 Info Day & International Brokerage Event Information-Centric and Software-Defined Networking. Torsten Braun, Universität Bern braun@iam.unibe.ch , cds.unibe.ch. Future Internet.

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Torsten Braun, Universität Bern braun@iam.unibe.ch , cds.unibe.ch

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  1. ICT LEIT in H2020 Info Day & International Brokerage EventInformation-Centric and Software-Defined Networking Torsten Braun, Universität Bern braun@iam.unibe.ch, cds.unibe.ch

  2. Torsten Braun: Information-Centric and Software-Defined Networking Future Internet • The current Internet is based on principles of the 1960s with the main purpose to interconnect large computers. • Today, Internet users are mainly interested in retrieving content and accessing services. • Increasing bandwidth demand due to • (personalized) multimedia data streams • Cloud computing and storage, visualization on (mobile / high-resolution) end systems • Large data sets from measurements and scientific experiments • Internet of Things, Internet of Services, … • New approaches, e.g., Information-Centric Networking (ICN), Software-Defined Networking (SDN), need more research, development, testing etc.

  3. Torsten Braun: Information-Centric and Software-Defined Networking Traditional Web Retrieval / Web Services search engine / service registry web server/ web service DNS server user’s end system

  4. Torsten Braun: Information-Centric and Software-Defined Networking Information-Centric Networking (ICN) • Naming of content rather than hosts/interfaces • Content independent of devices that store it • Naming is location independent (receiver mobility support !) • Receivers (subscribers) request content. • Senders (publishers) advertise and deliver content. • Receivers and senders • do not have to be aware of each other • are decoupled in time • Example: Content-Centric Networking (CCN)

  5. Torsten Braun: Information-Centric and Software-Defined Networking Content-Centric Networking (CCN) • Combination of content lookup and message routing • Idea: describe the user’s interests in the message header, but not where to get it. • Messages (using XML encoding) • Interest: content name, selector • Data: content name, signature (info), data • Hierarchical content names • Example: /unibe.ch/braun/lecture/os/20130219 • Related Projects • NDN = Named Data Networking, www.named-data.net • CCNx = open source software reference implementation for CCN, www.ccnx.org Van Jacobson, Diana K. Smetters, James D. Thornton, Michael F. Plass, Nicholas H. Briggs, and Rebecca L. Braynard: Networking namedcontent, 5th international conference on Emerging networkingexperimentsandtechnologies (CoNEXT '09). ACM, New York, NY, USA, 1-12.

  6. Torsten Braun: Information-Centric and Software-Defined Networking Content Distribution with ICN/CCN • /unibe.ch/braun/lecture/os/20130219 1 2 3 Interest / Data 4 5 6 7

  7. Torsten Braun: Information-Centric and Software-Defined Networking Service-Centric Networking (SCN) • Extension of content-centric networking to support services, possibly operating on content. • Description of a service using content naming scheme, e.g., /google.com/file-service • Services are provided by service elements. • Service request (response) in Interest (Data) message • Goals • Reducing delay for providing services • Minimizing network bandwidth for service access • Load balancing Braun, T.; Hilt, V.; Hofmann, M.; Rimac, I.; Steiner, M.; Varvello, M.: Service-Centric Networking, 2011 IEEE International Conference on Communications Workshops (ICC), pp.1-6, Kyoto, 5-9 June 2011

  8. Torsten Braun: Information-Centric and Software-Defined Networking Target Services Supported by SCN Infrastructure services, e.g., deploy / find / use cloud computing and storage services Client-oriented services, e.g., web services Continuous content retrieval and streaming services, e.g., A/V conferencing, streaming Event services, e.g., sensor or stocks data In-network services, e.g., (sensor) data aggregation and filtering Location-based services

  9. Torsten Braun: Information-Centric and Software-Defined Networking Service-Centric Network SCN router Servicerequest/response

  10. Torsten Braun: Information-Centric and Software-Defined Networking SCN Objects function1 read read function2 content data content data function1 function3 function2 1: Content Object 2: Service Object 3: Content/Service Object

  11. Torsten Braun: Information-Centric and Software-Defined Networking Example: Real-time Audio Conferencing Echo cancellation Trans-coding Mixing Sent audio data Received audio data

  12. Torsten Braun: Information-Centric and Software-Defined Networking Software Defined Networking (SDN) (centralized) control smart, slow API to data plane, e.g., OpenFlow dumb, fast switches

  13. Torsten Braun: Information-Centric and Software-Defined Networking SDN Architecture Application Layer BusinessApplications API API API Control Layer SDN Control Software Network Services Infrastructure Layer Network Device

  14. Torsten Braun: Information-Centric and Software-Defined Networking Service-Defined Service-centric Networking (SDSN) • Services might be composed out of multiple atomic services. • Single service request can be considered as service program involving atomic services from different servers. • Service mapper • identifies servers to provide atomic services • calls atomic services by service requests • may combine results into a single service response to the requester • Analogy between Software-Defined Networks and SCN: separation of control and forwarding → Software-Defined Service-Centric Networking (SDSN) • SDSN could provide API to service developers to define services,SDSN then programs the network to provide requested services. Torsten Braun, Andreas Mauthe, VasiliosSiris: Service-Centric Networking Extensions, 28th ACM Symposium on Applied Computing, Coimbra, Portugal, March 18 - 22, 2013

  15. Torsten Braun: Information-Centric and Software-Defined Networking SDSN Operation • SDSN can use SDN • to establish flows between clients and discovered service entities (service discovery by Interest / Data) • to set up a SDSN overlay network T E M SM Service Elements Service Mapper Network Device

  16. Torsten Braun: Information-Centric and Software-Defined Networking SDSN and SDN Devices API Service Mapper SDN Interface SDSN Interface Service Element Service Processing Network Device ICN/CCN ICN/CCN Routing & Switching Routing & Switching

  17. Torsten Braun: Information-Centric and Software-Defined Networking ICN/SDN in Smart Grid Energy Router Controllers of energy sources / consumers Control Energy sources / consumers Energy switch

  18. Torsten Braun: Information-Centric and Software-Defined Networking Conclusions • SDN is being used as network management technology so farand its potential has not been exploited. • ICN/CCN as promising Future Internet paradigm • SDSN as generalization of SDN and ICN towards services: Configuration of both network devices and service elements • SDSN as enabler for an Internet of Services, Internet of Things, etc. • Open ıssues • Securıty • Energy effıcıency

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