| 2.1 Serial Point-to-Point Links |
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| 2.1.1 Introducing Serial Communications |
| 2.1.2 TDM |
| 2.1.3 Demarcation Point |
| 2.1.4 DTE and DCE |
| 2.1.5 HDLC Encapsulation |
| 2.1.6 Troubleshooting a Serial Interface |
| 2.2 PPP Concepts |
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| 2.2.1 Introducing PPP |
| 2.2.2 PPP Layered Architecture |
| 2.2.3 PPP Frame Structure |
| 2.2.4 Establishing a PPP Session |
| 2.2.5 Establishing a Link with LCP |
| 2.2.6 NCP Explained |
| 2.3 Configuring PPP |
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| 2.3.1 PPP Configuration Options |
| 2.3.2 PPP Coniguration Commands |
| 2.3.3 Verifying a Serial PPP Encapsulation Configuration |
| 2.3.4 Troubleshooting PPP Encapsulation |
| 2.4 Configuring PPP with Authentication |
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| 2.4.1 PPP Authentication Protocols |
| 2.4.2 Password Authentication Protocol (PAP) |
| 2.4.3 Challenge Handshake Authentication Protocol (CHAP) |
| 2.4.4 PPP Encapsulation and Authentication Process |
| 2.4.5 Configuring PPP with Authentication |
| 2.4.6 Troubleshooting a PPP Configuration with Authentication |