1. A Unified Framework for Software Defined Information-centric Network Wen Qi, Jinfan Wang, Yujia Luo, Rui Qin, Weigang Hou, Jing Ren Shucheng Liu, Jianping Wang City University of Hong Kong, Hong Kong, Department of Computer Science

2. Motivations Various ICN architectures have been proposed. – All these ICNs share some similar assumptions, objectives and function modules – However, they have different architectures, packet formats, and so on – Each ICN has its own design principles and advantages ISP may implement different ICNs on its network and end users may only install one ICN client – Lead to the issues of Deploying different ICNs on top of the same existing physical layer Interoperating between different ICNs City University of Hong Kong, Hong Kong, Department of Computer Science 2

3. Potential Scenarios(1/2) Clients may request content provided by other providers with different protocol 3 City University of Hong Kong, Hong Kong, Department of Computer Science

4. Potential Scenarios(2/2) 4 City University of Hong Kong, Hong Kong, Department of Computer Science Clients may move to a network which adopts a different ICN architecture

5. Objectives To achieve coexistence and interoperability of different ICN architectures – To provide universal API, which makes the deployment of ICNs easier and faster – To make no change at ICN clients 5 City University of Hong Kong, Hong Kong, Department of Computer Science

6. Methodology Based on software-defined networking (SDN) – Decoupling control plane from data plane  a possible solution for ICN coexistence and interoperibility A Unified Framework for Software Defined Information-centric Network (SD-ICN) – Generic ICN function modules – Unified packet format for forwarding 6 City University of Hong Kong, Hong Kong, Department of Computer Science

7. SD-ICN Overview 7 City University of Hong Kong, Hong Kong, Department of Computer Science control plane data plane Packet Identifier Content Index Topology Management Cache Management Label Mapping ForwardingCache Adds tags for original ICN packets Only be implemented at edge switches Unified packet format for forwarding Distinguish packets of different ICN architectures Unified framework

8. SD-ICN Overview 8 City University of Hong Kong, Hong Kong, Department of Computer Science control plane data plane Packet Identifier Content Index Topology Management Cache Management Label Mapping ForwardingCache Unified packet format for forwarding Maintain content information, including content copy in caches, which helps users get the nearest data Gather underlying topology Unified framework

9. SD-ICN Overview 9 City University of Hong Kong, Hong Kong, Department of Computer Science control plane data plane Packet Identifier Content Index Topology Management Cache Management Label Mapping ForwardingCache Forward packets Unified packet format for forwarding Cache packets and respond to requests Manage in-network caches Unified framework

10. Demo Experiment cases – operate within one ICN architecture NDN – interoperate within two ICN architectures NDN client + PURSUIT content provider 10 City University of Hong Kong, Hong Kong, Department of Computer Science Beijing ID:2001 Beijing ID:2002 PURSUIT NDN In CityU ID:3001 Inside lab ID:3002 Inside lab ID:3003 Inside lab ID:2003 NDN cache

11. Experiment Results NDN client + NDN content provider NDN client + PURSUIT content provider 11 City University of Hong Kong, Hong Kong, Department of Computer Science

12. Future Works Provide specific management API for each ICN network Migrate our work to the platform of OVS and NOX Consider multi-level cache mechanism 12 City University of Hong Kong, Hong Kong, Department of Computer Science

13. THANKS! 13 City University of Hong Kong, Hong Kong, Department of Computer Science