1. The Medium Access Control Sublayer Chapter 4 4.3 - 4.5

2. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 Ethernet a)Physical layer b)MAC sublayer protocol c)Ethernet performance d)Switched Ethernet e)Fast Ethernet f)Gigabit Ethernet g)10 Gigabit Ethernet h)IEEE 802.2: Logical Link Control i)Retrospective on Ethernet

3. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 Classic Ethernet Physical Layer a)Architecture of classic Ethernet

4. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 MAC Sublayer Protocol (1) a)Frame formats. (a) Ethernet (DIX). (b) IEEE 802.3.

5. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 MAC Sublayer Protocol (2) a)Collision detection can take as long as 2 .

6. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 Ethernet Performance a)Efficiency of Ethernet at 10 Mbps with 512-bit slot times.

7. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 Switched Ethernet (1) a)(a) Hub. (b) Switch.

8. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 Switched Ethernet (2) a)An Ethernet switch. Switch Twisted pair Switch ports Hub

9. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 Fast Ethernet a)The original fast Ethernet cabling.

10. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 Gigabit Ethernet (1) a)A two-station Ethernet

11. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 Gigabit Ethernet (2) a)A two-station Ethernet

12. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 Gigabit Ethernet (3) a)Gigabit Ethernet cabling.

13. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 10 Gigabit Ethernet a)Gigabit Ethernet cabling

14. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 Wireless Lans a)802.11 architecture and protocol stack b)802.11 physical layer c)802.11 MAC sublayer protocol d)802.11 frame structure e)Services

15. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 802.11 Architecture and Protocol Stack (1) a)802.11 architecture – infrastructure mode Access Point Client To Network

16. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 802.11 Architecture and Protocol Stack (2) a)802.11 architecture – ad-hoc mode

17. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 802.11 Architecture and Protocol Stack (3) a)Part of the 802.11 protocol stack.

18. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 The 802.11 MAC Sublayer Protocol (1) a)Sending a frame with CSMA/CA.

19. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 The 802.11 MAC Sublayer Protocol (2) a)The hidden terminal problem.

20. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 The 802.11 MAC Sublayer Protocol (3) a)The exposed terminal problem.

21. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 The 802.11 MAC Sublayer Protocol (4) a)The use of virtual channel sensing using CSMA/CA.

22. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 The 802.11 MAC Sublayer Protocol (5) a)Interframe spacing in 802.11

23. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 802.11 Frame Structure a)Format of the 802.11 data frame

24. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 Broadband Wireless a)Comparison of 802.16 with 802.11, 3G b)802.16 architecture and protocol stack c)802.16 physical layer d)802.16 frame structure

25. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 Comparison of 802.16 with 802.11 and 3G a)The 802.16 architecture

26. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 802.16 Architecture and Protocol Stack a)The 802.16 protocol stack

27. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 802.16 Physical Layer a)Frames structure for OFDMA with time division duplexing.

28. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 802.16 MAC Sublayer Protocol a)Classes of service b)Constant bit rate service. c)Real-time variable bit rate service. d)Non-real-time variable bit rate service. e)Best-effort service.

29. Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice Hall, 2011 802.16 Frame Structure a)(a) A generic frame. (b) A bandwidth request frame.