计算机网络(第5版),清华大学出版社,严伟潘爱民 译ppt Chapter1-Introduction.ppt

The TCP/IP Reference Model (1) The TCP/IP reference model Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, ? Pearson Education-Prentice Hall, 2011 The TCP/IP Reference Model (2) The TCP/IP reference model with some protocols we will study Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, ? Pearson Education-Prentice Hall, 2011 The Model Used in this Book The reference model used in this book. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, ? Pearson Education-Prentice Hall, 2011 Comparison of the OSI and TCP/IP Reference Models Concepts central to OSI model Services Interfaces Protocols Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, ? Pearson Education-Prentice Hall, 2011 Critique of the OSI Model and Protocols Bad timing. Bad technology. Bad implementations. Bad politics. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, ? Pearson Education-Prentice Hall, 2011 OSI Model Bad Timing The apocalypse of the two elephants. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, ? Pearson Education-Prentice Hall, 2011 Example Networks Internet ARPANET NSFNET Third-generation mobile phone networks Wireless LANs: 802.11 RFID and sensor networks Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, ? Pearson Education-Prentice Hall, 2011 The ARPANET (1) Structure of the telephone system. Baran’s proposed distributed switching system. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, ? Pearson Education-Prentice Hall, 2011 The ARPANET (2) The original ARPANET design Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, ? Pearson Education-Prentice Hall, 2011 The ARPANET (3) Growth of the ARPANET. December 1969. July 1970. March 1971. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, ? Pearson Education-Prentice Hall, 2011 The ARPANET (4) Growth