This section describes how to encapsulate the interface with PPP. You can configure PPP to use PPP encapsulation to transmit packets over a point-to-point link at the data link layer.
This section describes how to configure Challenge Handshake Authentication Protocol (CHAP) authentication. CHAP is a three-way handshake authentication protocol.
This section describes the configuration methods and examples of PPP negotiation parameters, negotiation polling interval and the function of preventing the peer host route from being added to the local routing table as a direct route.