F3726, F3211, F3174, R5135, R3816-HP Firewalls and UTM Devices Network Management Configuration Guide-6PW100

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7BConfiguring PPP
PPP can be configured only at the CLI.
83B
Feature and hardware compatibility
Hardware PPP com
p
atible
F1000-A-EI/F1000-S-EI
Yes only in dialer interface view and virtual template (VT) interface
view
F1000-E Yes only in VT interface view
F5000 Yes only in VT interface view
Firewall module Yes only in VT interface view
U200-A Yes only in dialer interface view and VT interface view
U200-S Yes only in dialer interface view and VT interface view
This document uses PPP configuration on VT interfaces as an example, which is similar to that on dialer
interfaces.
84B
Overview
Point-to-Point Protocol (PPP) is a link layer protocol carrying network layer packets over point-to-point links.
It gains popularity because it provides user authentication, supports synchronous/asynchronous
communication, and allows for easy extension.
PPP contains a set of protocols, including:
• Link control protocol (LCP)—Establishes, tears down, and monitors data links.
• Network control protocol (NCP)—Negotiates the packet format and type for data links.
• Authentication protocols—Provides network security, consisting of Password Authentication
Protocol (PAP), Challenge Handshake Authentication Protocol (CHAP), Microsoft CHAP
(MS-CHAP), and Microsoft CHAP Version 2 (MS-CHAP-V2).
447BPPP link establishment process
2311HFigure 60 shows the PPP link establishment process.