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DATA COMMUNICATION Lecture-43.

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Presentation on theme: "DATA COMMUNICATION Lecture-43."— Presentation transcript:

1 DATA COMMUNICATION Lecture-43

2 Recap of Lecture 42 Local Area Networks (LANs) Project 802
Protocol Data Unit (PDU) Ethernet

3 Overview of Lecture 43 Ethernet Implementations Other Ethernet works
Token Bus/Ring

4 Ethernet

5 10 BASE 2: Thin Ethernet Reduced cost and ease of installation
The cable is lighter weight and more flexible Short range

6 10 BASE 2: Thin Ethernet

7 10 BASE-T: Twisted-Pair Ethernet
The most popular standard in the IEEE series Star-topology LAN using UTP cable

8 10 BASE-T: Twisted Pair Ethernet

9 1 BASE 5: StarLAN Daisy chain Range can be increased
As many as 10 stations can be linked in a chain

10 1 BASE 5: StarLAN

11 Switched Ethernet An attempt to improve the performance of 10BASE-T
N ×10 Mbps with N devices

12 Switched Ethernet

13 Switched Ethernet

14 Fast Ethernet Data rate can be increased by decreasing the collision domain If 10 Mbps  100 Mbps, then 2500 m  250 m

15 Fast Ethernet

16 100 Base-TX and 100 Base-FX

17 100 Base-T4

18 Gigabit Ethernet Usually serves as a backbone Four implementations
1000Base-SX, 1000Base-LX: Optical fiber, m 1000Base-CX (STP), 1000Base-T (UTP): 25 m

19 Gigabit Ethernet

20 Token Bus Bus topology and collision-free using tokens
Used for factory automation and process control

21 Token Bus Other LANs are not suitable for this purpose
Token Bus has no commercial application in data communications

22 Token Ring Token Ring allows each station to send one frame per turn
Access method: Token passing

23 Token Ring

24 Summary Ethernet Implementations Other Ethernet Networks
Token Bus/Ring

25 Suggested Reading Section 12.2, 12.3, 12.4, 12.5
“Data Communications and Networking” 2nd Edition by Behrouz A. Forouzan

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