The document discusses different networking and internetworking devices such as repeaters, bridges, routers, and switches. It provides figures illustrating how these devices operate at the OSI model layers and how they function to connect and route data between different devices and networks. The document also covers distance vector and link state routing protocols, providing examples of how routing tables are calculated and updated between routers using these different algorithms.

1. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Chapter 21
Networking
and
Internetworking
Devices

2. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-1
Connecting Devices

3. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-2
Connecting Devices and the OSI Model

4. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-3
A Repeater in the OSI Model

5. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-4
A Repeater

6. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-5
Function of a Repeater

7. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-6
A Bridge in the OSI Model

8. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-7
A Bridge

9. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-8
Function of a Bridge

10. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-9
Multiport Bridge

11. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-10
A Router in the OSI Model

12. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-11
Routers in an Internet

13. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-12
A Gateway in the OSI Model

14. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-13
A Gateway

15. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-14
Single-Protocol versus
Multiprotocol Router

16. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-15
Brouter

17. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-16
Switch

18. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-17
Example of an Internet

19. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-18
The Concept of Distance
Vector Routing

20. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-19
Distance Vector Routing Table

21. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-20
Routing Table Distribution

22. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-21
Updating Routing Table for Router A

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Figure 21-22
Final Routing Tables

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Figure 21-23
Example 21.1

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Figure 21-24
Concept of Link State Routing

26. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-25
Cost in Link State Routing

27. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-26
Link State Packet

28. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-27
Flooding of A’s LSP

29. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-28
Link State Database

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Figure 21-29
Costs in the Dijkstra Algorithm

31. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-30, Part I
Shortest Path Calculation, Part I

32. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-30, Part II
Shortest Path Calculation, Part II

33. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-30, Part III
Shortest Path Calculation, Part III

34. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-30, Part IV
Shortest Path Calculation, Part IV

35. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-30, Part V
Shortest Path Calculation, Part V

36. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-30, Part VI
Shortest Path Calculation, Part VI

37. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-31, Part VII
Shortest Path Calculation, Part VII

38. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-31, Part I
Shortest Path Calculation, Part VIII

39. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-31, Part II
Shortest Path Calculation, Part IX

40. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-31, Part III
Shortest Path Calculation, Part X

41. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-31, Part IV
Shortest Path Calculation, Part XI

42. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-31, Part V
Shortest Path Calculation, Part XII

43. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 21-31, Part VI
Shortest Path Calculation, Part XIII

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Routing Table for Router A
Figure 21-32