Chapter 25. HDLC and PPP

This chapter provides information and commands concerning the following Point-to-Point Protocol (PPP) topics:

• Configuring High-Level Data Link Control (HDLC) encapsulation on a serial line

• Configuring PPP on a serial line (mandatory commands)

• Configuring PPP on a serial line (optional commands), including those commands concerning the following:

  - Compression

  - Link quality

  - Multilink

  - Authentication

• Verifying or troubleshooting a serial link/PPP encapsulation