Named Data Networking (NDN) is a revolutionary approach that prioritizes data and content over hosts, addressing data like URLs rather than using traditional IP addresses. NDN operates on a client-cloud model, utilizing interest packets to retrieve data without establishing direct connections to hosts, which enhances mobility and bandwidth efficiency. The system has advantages such as eliminating DNS-IP conversion, improving security with distributed key management, and simplifies network administration.

1. Named Data Networking
Mustafa Cantürk
Murat Can Sayılgan

2. Named Data Networking
 Content Centric Networking
 By Van Jacobson
 At PARC
 www.ccnx.org

3. A trending topic: one idea, many names
 Content Centric Networking
 Named Data Networking
 Information Centric Networking
 Data Oriented architecture

4. Named Data Networking
 Funded by NSF (National Science Foundation)
 At first, forked CCN code
 Then…
 They rewrite code from scratch

5. NDN Testbed

6. NDN Testbed

7. Main Ideas

8. Main Idea
 Naming data/content instead of hosts
 Data will be addressed like URL (name)
 itu.edu.tr/computer_comm/ndn.pptx
 Routers will operate on names, not IP’s
 No client-server model
 It is a client-cloud model
 Model is based on data itself

9. Request-Response Mechanism
 Client’s doesn’t connect to a
host
 Client send interest packet to
router
 Router finds the data
 And replies to client

10. IP Networking (Host based model) NDN Networking (Cloud model)
Network Model

11. Main Idea

12. NDN Packet Format

13. Node Model

14. Node Model

15. NDN Forwarding Engine

16. Hierarchical Naming

17. Example Message Sequence

18. Example Message Sequence

19. Example Message Sequence

20. Example Message Sequence

21. Example Message Sequence

22. Example Message Sequence

23. Example Message Sequence

24. Example Message Sequence

25. Example Message Sequence

26. Example Message Sequence

27. NDN Routers
 Work to verify data
 More state in its routing entries, stateful
 More complex entries (names vs IP addresses)
 Associated storage devices
 Increased cost

28. NDN Applications and Implementation
 No TCP or UDP
 No ports
 Applications have to change their own network stack
 There are some PoC applications
 NDN can work on UDP/IP overlay
 IP can work on NDN overlay
 IP and NDN both work hybrid on transition phase
 IP protocol started working over telephone network

29. Security
 HMAC for data integrity
 SDSI for authenticity and data privacy
 Distributed key management mechanism
 Keys are mapped to identities via namespaces

30. Advantages
 No DNS - IP conversion
 Wipes unnecessary network stacks
 Not connection based
 Multiple interfaces can work together for a single request
 Efficient bandwidth usage
 Mobility friendly
 No connection loss when moving
 Data/Object oriented architecture
 (Not programming paradigm)
 Works with «named objects»

31. Advantages (cont.)
 Easy administration
 No spanning tree
 DoS and DDoS are hard to implement

32. Thank you for listening
Mustafa Cantürk
Murat Can Sayılgan