Describe the five configurable LCP encapsulation options.

Describe the five configurable LCP encapsulation options.

Authentication using PAP or CHAP

• If all you need is password authentication, configure PAP using the ppp authentication pap command.
• If you want a challenge handshake, configure CHAP using the ppp authentication chap command (it’s more secure).

Compression

• Increases the effective throughput by reducing the amount of data in the PPP frame that must travel across the link.
• To configure Stacker, use the compress stac command. To configure Predictor, use the compress predictor command.

Error detection

• Identifies fault conditions to help ensure a reliable, loop-free data link.
• Configured using the ppp quality percentage command.

Multilink

• Provides load balancing over the router interfaces that PPP uses using the command ppp multilink.

PPP callback

• Enhances security by making a Cisco router a callback client. It makes the initial call, requests that the other Cisco router configured as a server call it back, and terminates its initial call.
• The command is ppp callback [accept | request].

Exam with this question: EWAN v4 Chapter 2 Check Your Understanding: PPP