1 CCNA 4 v3.1 Module 3
2 CCNA 4 v3.0 Module 3 PPP
333 Objectives Serial point-to-point links PPP authentication Configuring PPP
444 Introduction to Serial Communication Some of the many serial communications standards include the following: RS-232-E V.35 High-Speed Serial Interface (HSSI)
555 Time-Division Multiplexing
666 Demarcation Point The point in the network where the responsibility of the service provider or "telco" ends.
777 DTE-DCE
888 Serial Connection Options
999 HDLC Encapsulation
10 Configuring HDLC Encapsulation
11 Troubleshooting a Serial Interface Five possible problem states can be identified in the interface status line of the show interface serial display: Serial x is down, line protocol is down. Serial x is up, line protocol is down. Serial x is up, line protocol is up (looped). Serial x is up, line protocol is down (disabled). Serial x is administratively down, line protocol is down.
12 PPP Layered Architecture
13 PPP and the Data Link Layer
14 PPP and the Network Layer
15 Establishing a PPP Session
16 PPP Operation
17 LCP Options
18 PPP Configuration Options
19 NCP
20 PPP Authentication Protocols
21 PPP Authentication
22 Password Authentication Protocol (PAP)
23 Challenge Handshake Authentication Protocol (CHAP) CHAP provides protection against playback attack through the use of a variable challenge value that is unique and unpredictable.
24 PPP Encapsulation and Authentication Process
25 CHAP Authentication Process
26 Configuring PPP
27 Configuring PPP Authentication
28 PAP Configuration
29 CHAP Configuration
30 Verifying PPP
31 PPP Configuration Commands
32 Debug PPP Authentication