The Internet Book

3 The Internet Works Well The Internet is a marvel of technical accomplishment. TCP/IP: – Accommodates growth and change not imagined

4 IP Provides Flexibility IP provides the flexibility to accommodate underlying hardware. –Allows multiple vendors to produce: computers routers that can communicate

5 TCP Provides Reliability TCP provides reliability. –Handles communication problems –Communicates in applications –Handles rapid changes in performance –Adaptes to congestion automatically

6 TCP/IP Software Was Engineered For Efficiency TCP/IP sends only the minimum network packets. Runs well on all computers. TCP/IP

7 TCP/IP Research Emphasized Practical Results Scientists built, tested, and measured working communication systems. All new ideas were based on experimental evidence.

8 Rough Consensus and Working Code TCP/IP arose from a consensus among researchers. –Accepted ideas only after implementation and demonstration –Allowed designers to correct problems early

9 Formula For Success The Internet was extremely successful. –Due to: Talented, dedicated research team Experimentation without economic gain Built to operate efficiently Each part worked well in practice before adopted as a standard

10 Conclusion What are the lessons learned from the successful development of the Internet?

11

12 Glossary IP –Specification for the format of packets computers use when they communicate across the Internet TCP –The name of protocols that specify how computer communicate on the Internet