1. Future of the Internet
Dae Young KIM
Chungnam University
6-Nov-12 @DGIF 2012 dykim@cnu.kr 1

2. Everything over Internet
6-Nov-12 @DGIF 2012 dykim@cnu.kr 2

3. Internet over Everything
6-Nov-12 @DGIF 2012 dykim@cnu.kr 3

4. Simplicity of the Internet
● Core of the Internet: TCP/IP
● TCP: end-to-end protocol
– Reliable transfer between end devices
● IP: inter-networking protocol
– Relaying over different intermediate subnetworks
● End-to-End Principle
– Complex TCP with Simple IP
6-Nov-12 @DGIF 2012 dykim@cnu.kr 4

5. Simple Internet Model
R
H
TCP
IP
6-Nov-12 @DGIF 2012 dykim@cnu.kr 5

6. End-to-End (e2e) Principle
● Intelligence at the edges, not in the network
● Smart hosts, simple relays(routers)
● TCP: complex
– Reliability; error recovery by retransmission
● IP: very simple
– Only for relaying, nothing else
● “Connectivity is its own reward”
– Connection is all that matters.
6-Nov-12 @DGIF 2012 dykim@cnu.kr 6

7. IP
Destination Source
DATA
Address Address
No Quality of Service (QoS)
- no error recovery > no reliability
- no guaranteed bandwidth
No security
Just “Best Effort”
6-Nov-12 @DGIF 2012 dykim@cnu.kr 7

8. What was before e2e?
● Telephone Network
– Complex/huge/intelligent network
– Dummy terminal(phone set); nothing but dialing
● Who's in control?
– Network or Edge?
● Collision of industries: Telecom vs Computer
– Like those of civilizations, religions, ideologies
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9. Analogy
Trains vs Cars
Rails vs Roads
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10. KISS: Keep it Simple and Stupid!
● There're many good sides of simplicity.
– Immediate convenience though often caotic
– Why do you prefer cars to trains?
● The Internet thrives on simplicity.
● Perhaps, too simple/stupid?
● Make everything as simple as possible, but not
simpler. - Einstein -
6-Nov-12 @DGIF 2012 dykim@cnu.kr 10

11. Are You Happy?
6-Nov-12 @DGIF 2012 dykim@cnu.kr 11

12. We Want More!
● QoS
– Guaranteed bandwidth
– Bounded delay & jitter
● Security
– Inherent, not as an add-on
– Privacy
● More ...
6-Nov-12 @DGIF 2012 dykim@cnu.kr 12

13. NGI: Next Generation Internet
● 90's ~ 2005
● All kinds of patches
– Int-Serv/Diff-Serv, IPSEC, Mobile IP, multicast, ...
6-Nov-12 @DGIF 2012 dykim@cnu.kr 13

14. NGI: 沙上樓閣
6-Nov-12 @DGIF 2012 dykim@cnu.kr 14

15. Future Internet
● Clean Slate
● Revolution than Evolution
● Innovation than Renovation
● Backward compatibility
– Desirable but not a requirement
6-Nov-12 @DGIF 2012 dykim@cnu.kr 15

16. Some FI Buzz Words
● DTN: Delay/Disruption Tolerant Network
– Remote villages, inter-plenary
● CCN: Content-Centric Network
– Telecom: (phone) numbers
– Internet: (IP) address
– CCN: (content) ID
● SDN: Software-Defined Network
– Dynamically configurable, Polymorphic
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17. Internet & Future Internet
● Internet: championed by students
– TCP/IP: Vint Cerf & Bob Kahn
– Mosaic/Netscape: Marc Andreessen
– Facebook: Mark Zuckerberg
– Yahoo, Google, YouTube, Twitter, ....
● Future Internet
– Any reason to be different?
– Which do you believe in, Samsung or Yourself?
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18. What's Your Idea?
?
6-Nov-12 @DGIF 2012 dykim@cnu.kr 18

19. Thank you!
●http://fif.kr/gfi-summit/11/
●http://fif.kr/gfi-summit/12/
6-Nov-12 @DGIF 2012 dykim@cnu.kr 19