下 一 代 網 際 網 路 Next Generation Internet

1. 下 一 代 網 際 網 路 Next Generation Internet 張瑞雄 (Ruay-Shiung Chang) Department of Computer Science and Information Engineering National Dong Hwa University Last Modified: February, 2001

2. Textbook: IPng and the TCP/IP Protocols by Stephen A. Thomas Course Contents: Chapter 1: Introduction Chapter 2: The Architecture of Networks Chapter 3: Network Technologies (with a brief introduction of ATM) Chapter 4: Internet Protocol Version 6 (introducing IPv4 first) Chapter 5: Using ICMP to Coordinate Systems Chapter 6: Datagram Delivery via UDP Chapter 7: Reliable Delivery with TCP Chapter 8: Routing with OSPF Chapter 9: RIP’s Simpler Approach to Routing Chapter 10: Reserving Resources for Real Time Traffic with RSVP Chapter 11: Domain Name Service Chapter 12: Configuring Hosts through DHCP

3. Reference Books: 1. IPv6 Clearly Explained, by Peter Loshin, Pete Loshin 2. Implementing IPv6 : Supporting the Next Generation Protocols by P. E. Miller, Mark A. Miller Grading: 1. Homework Assignments: 20% 2. RFC study report: 20% 3. Project: 40% 4. Final exam: 20% All the course slides can be obtained from my homepage.

4. Chapter 1 Introduction Internet: A Great and Unexpected Success INTERNATIONAL CONNECTIVITY Version 16 - June 15, 1997 SUMMARY NUMBER OF ENTITIES WITH INTERNATIONAL NETWORK CONNECTIVITY = 195 NUMBER OF ENTITIES WITHOUT INTERNATIONAL NETWORK CONNECTIVITY = 42

5. Chapter 1 Introduction

6. Chapter 1 Introduction

7. Chapter 1 Introduction WWW Growth

8. Chapter 1 Introduction Some numbers to ponder: An estimated 1.1 billion email messages were sent last year, each averaging 18500 bytes. The total flow of data between the world’s 500 million email boxes: 20350 terabytes. At the end of 1969, the ARPANET (predecessor of the Internet) consisted of four computers. At its current average growth rate (69 new hosts added each minute), the Internet will comprise a billion hosts by 2005.

9. Chapter 1 Introduction Who keeps the Internet Running? Internet Corporation for Assigned Names and Numbers (ICANN) A nonprofit corporation responsible for allocating IP address space, assigning protocol parameters, and managing the domain name and root server system. This last function includes determining which new top-level domains are added to the system.

10. Chapter 1 Introduction Who keeps the Internet Running? Internet Engineering Task Force (IETF) An International community of network designers, operators, vendors, and researchers. Their job is to evolve the Internet and smooth its operation by creating technical standards through consensus.

11. Chapter 1 Introduction Who keeps the Internet Running? The Internet Society (ISOC) An international, nonprofit organization for Internet professionals. It serves as the “organizational home” of the IETF, overseeing various organizational and coordinating tasks.

12. Chapter 1 Introduction Who keeps the Internet Running? World Wide Web Consortium (W3C) A consortium of over 400 corporate, academic, and public institutions that oversees the application most responsible for the Net’s rapid growth: the World Wide Web. W3C identifies new technical requirements, designs technologies to fulfill them, produces standards (called recommendations), and coordinates its efforts with other standards groups, including the IETF.

13. Chapter 1 Introduction Growing Pains • Problems: • The depletion of IP addresses (sometimes between 2005 and 2011) • The explosion in the sizes of routing tables • Many TCP/IP engineers feel that the routing table explosion will condemn the Internet even sooner than the exhaustion of network addresses. • World Wide Wait

14. Chapter 1 Introduction Next generation IPng: refer to all the aspects of the next generation Internet Protocol IPv6: The new version of Internet Protocol Changes to IP affect many other TCP/IP protocols. In fact, at least 58 current TCP/IP standards must be revised to accommodate IPv6. There is also the question of migration. It simply is not possible to “flip a switch” somewhere and magically convert all IPv4 systems to IPv6.

15. Chapter 1 Introduction Next generation Other Improvements To Support QoS (Quality of Service) Integrated Service:RSVP (Resource reSerVation Protocol) Differentiated Service To support mobility Mobile IP Continuous improvements to TCP, HTTP, etc.

16. Chapter 1 Introduction Finally, to know the history of Internet, please visit http://www.isoc.org/internet/history/ • Hobbes' Internet TimelineAn Internet timeline highlighting some of the key events and technologies which helped shape the Internet as we know it today.