1. Agenda 1. QUIZ 2. HOMEWORK 3. LOCAL AREA NETWORKS 4. WIDE AREA NETWORKS

2. Homework 12-1, 12-4, 12-11, 12-16, 12-18, 12-20, 12-67 13-8, 13-12, 13-13, 13-16

3. Chapter 12 Local Area Networks

4. Figure 12-1 LAN Compared with the OSI Model

5. Figure 12-2 Project 802

6. LANs & Layers Source Port 802.1 Bridging 802.2 Logical Link Control CSMA Token Token MAN IVD Wire- Future less CD Bus Ring 802.3 802.4 802.5 802.6 802.9 802.11 802.7 Broadband Tag 802.8 Fiber Optic Tag Data Link Layer Physical Layer

7. Point To Multipoint Protocol Building Blocks ALOHA--Up to 18% Throughput Slotted ALOHA--Up to 37% Throughput Carrier Sense Multiple Access-- Up to 55% Throughput Carrier Sense Multiple Access with Collision Detection--40-70% Throughput Ethernet

8. Figure 12-3 PDU Format

9. Figure 12-4 Control Field in a PDU

10. Figure 12-5 IEEE 802.3

11. Figure 12-6 Collision in CSMA/CD

12. Figure 12-7 802.3 MAC Frame

13. Figure 12-8 Ethernet Segments

14. Figure 12-9 Topology of 10Base5

15. Figure 12-10 Transceiver Connection in 10Base5

16. Figure 12-11 Topology of 10Base2

17. Figure 12-12 10Base-T Topology

18. Figure 12-14 An Ethernet Network Using A Hub

19. Figure 12-15 An Ethernet Network Using a Switch

20. Figure 12-16 Categories of Fast Ethernet Implementations

21. Figure 12-17 100Base-TX Implementation

22. Figure 12-18 100Base-FX Implementation

23. Figure 12-19 100Base-T4 Implementation

24. Figure 12-20 Use of Gigabit Ethernet

25. Table 12-1 Gigabit Ethernet Implementations Feature 1000Base-SX1000Base-LX1000Base-CX1000BAseT MediumOptical FiberOptical FiberSTPUTP multi-modemulti or single SignalShort-waveLong-waveElectricalElectricallaser Max550 m550 m m-mode25 m25 m 5000 m s-mode

26. Figure 12-21 Token Passing

27. Figure 12-22 Token Ring Frame

28. Figure 12-24 Token Ring

29. Figure 12-25 Token Ring Switch

30. Figure 12-27 FDDI Operation

31. Figure 12-29 FDDI Layers

32. Figure 12-30 FDDI Frame Types

33. Figure 12-31 FDDI Ring

34. Figure 12-32 FDDI Ring after a Failure

35. Figure 12-33 Node Connections

36. Chapter 13 Metropolitan Area Networks & IP to TCP

37. Figure 13-1 DQDB Buses and Nodes

38. Figure 13-2 Data Transmission in DQDB

39. Figure 13-3 Queues

40. Figure 13-4 Distributed Queues in a Node

41. Figure 13-5 Reservation Token in a Queue

42. Figure 13-6 DQDB Rings

43. Figure 13-7 DQDB Layers

44. Figure 13-8 Connecting LANs Using T-1 or T-3 Lines

45. Figure 13-9 SMDS as a MAN

46. Figure 13-10 SIP Levels

47. Figure 13-11 An Address in SMDS

48. Table 12-5 Local Area Network (LAN) Comparison NetworkAccessSignalingData RateError MethodControl EthernetCSMA/CDManchester10 Mbps No Fast EthernetCSMA/CDSeveral100 Mbps No Gigabit EthernetCSMA/CDSeveral 1 Gbps No Token RingToken PassingDiff Manchester4, 16 Mbps Yes FDDIToken Passing4B/5B, NRZ-I100 Mbps Yes

49. TCP/IP What The Forrest Looks Like (1)

50. Data Link Physical Apl Protocol Transport TCP UDP Network Physical Network TCP/IP Ethernet TCP/IP What The Forrest Looks Like (2)

51. Pre- amble To From addr DataPad Check sum Bits: 7 1 2/6 2/6 2 0 - 1500 0 - 46 4 Start of frame delimiter Length of data field What The Trees Look Like 1 (Ethernet Frame)

52. What The Trees Look Like 2 (IP Header) 32 bits Version IHLType of serviceTotal length IdentificationFragment offset Time to liveProtocolHeader checksum Source address Destination address Options (0 or more words) DFDF MFMF

53. What The Trees Look Like 3 (TCP Header) 32 bits Source portDestination port Sequence number Acknowledgement number Window size Urgent pointer Options (0 or more 32 bit words) Checksum Data (optional) TCP header length URGURG ACKACK PSHPSH RSTRST SYNSYN FINFIN