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CCNA 4 v3. 1 Module 3

CCNA 4 v3. 1 Module 3. CCNA 4 v3.0 Module 3 PPP. Objectives. Serial point-to-point links PPP authentication Configuring PPP. Introduction to Serial Communication.

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CCNA 4 v3. 1 Module 3

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  1. CCNA 4 v3.1 Module 3

  2. CCNA 4 v3.0 Module 3 PPP

  3. Objectives • Serial point-to-point links • PPP authentication • Configuring PPP

  4. Introduction to Serial Communication Some of the many serial communications standards include the following: RS-232-EV.35High-Speed Serial Interface (HSSI)

  5. Time-Division Multiplexing

  6. Demarcation Point The point in the network where the responsibility of the service provider or "telco" ends.

  7. DTE-DCE

  8. Serial Connection Options

  9. 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 DataLink 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

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