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Learn about the X.25 Frame Layer and Packet Layer Protocols, including addressing, control packets, and virtual circuits.
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Chapter 17 X.25
Figure 17-1 X.25
Figure 17-2 X.25 Layers in Relation to the OSI Layers
Figure 17-3 Format of a Frame
Figure 17-4 Addressing at the Frame Layer
Figure 17-5 Three Phases of the Frame Layer
Figure 17-6 Frame Layer and Packet Layer Domains
Figure 17-7 Virtual Circuits in X.25
Figure 17-8 LCNs in X.25
Figure 17-9 LCN Assignments
Figure 17-10 PLP Packet Format
Figure 17-11 Categories of PLP Packets
Figure 17-12 Data Packets in the PLP Layer
Figure 17-13 RR, RNR, and REJ Packets
Figure 17-14 Other Control Packets
Figure 17-15 Control Packet Formats
Figure 17-16 X.25 Address Format
Figure 17-17 Triple-X Protocols