mcgraw-hill©the mcgraw-hill companies, inc., 2001 chapter 17 x.25

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McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001 Chapter 17 X.25

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Page 1: McGraw-Hill©The McGraw-Hill Companies, Inc., 2001 Chapter 17 X.25

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001

Chapter 17

X.25

Page 2: McGraw-Hill©The McGraw-Hill Companies, Inc., 2001 Chapter 17 X.25

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001

Figure 17-1

X.25

Page 3: McGraw-Hill©The McGraw-Hill Companies, Inc., 2001 Chapter 17 X.25

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001

Figure 17-2

X.25 Layers in Relation to the OSI Layers

Page 4: McGraw-Hill©The McGraw-Hill Companies, Inc., 2001 Chapter 17 X.25

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001

Figure 17-3

Format of a Frame

Page 5: McGraw-Hill©The McGraw-Hill Companies, Inc., 2001 Chapter 17 X.25

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001

Figure 17-4

Addressing at the Frame Layer

Page 6: McGraw-Hill©The McGraw-Hill Companies, Inc., 2001 Chapter 17 X.25

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001

Figure 17-5

Three Phases of the

Frame Layer

Page 7: McGraw-Hill©The McGraw-Hill Companies, Inc., 2001 Chapter 17 X.25

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001

Figure 17-6

Frame Layer and Packet Layer Domains

Page 8: McGraw-Hill©The McGraw-Hill Companies, Inc., 2001 Chapter 17 X.25

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001

Figure 17-7

Virtual Circuits in X.25

Page 9: McGraw-Hill©The McGraw-Hill Companies, Inc., 2001 Chapter 17 X.25

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001

Figure 17-8

LCNs in X.25

Page 10: McGraw-Hill©The McGraw-Hill Companies, Inc., 2001 Chapter 17 X.25

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001

Figure 17-9

LCN Assignments

Page 11: McGraw-Hill©The McGraw-Hill Companies, Inc., 2001 Chapter 17 X.25

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001

Figure 17-10

PLP Packet Format

Page 12: McGraw-Hill©The McGraw-Hill Companies, Inc., 2001 Chapter 17 X.25

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001

Figure 17-11

Categories of PLP Packets

Page 13: McGraw-Hill©The McGraw-Hill Companies, Inc., 2001 Chapter 17 X.25

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001

Figure 17-12

Data Packets in the PLP Layer

Page 14: McGraw-Hill©The McGraw-Hill Companies, Inc., 2001 Chapter 17 X.25

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001

Figure 17-13

RR, RNR, and REJ Packets

Page 15: McGraw-Hill©The McGraw-Hill Companies, Inc., 2001 Chapter 17 X.25

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001

Figure 17-14

Other Control Packets

Page 16: McGraw-Hill©The McGraw-Hill Companies, Inc., 2001 Chapter 17 X.25

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001

Figure 17-15

Control Packet Formats

Page 17: McGraw-Hill©The McGraw-Hill Companies, Inc., 2001 Chapter 17 X.25

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001

Figure 17-16

X.25 Address Format

Page 18: McGraw-Hill©The McGraw-Hill Companies, Inc., 2001 Chapter 17 X.25

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001

Figure 17-17

Triple-X Protocols