Ppp And Mp Configuration; Introduction To Ppp And Mp; Ppp - 3Com MSR 50 Series Configuration Manual

19
Introduction to PPP
and MP

PPP

AND
This document is organized as follows:
"PPP and MP Configuration" on page 363
■
"PPPoE Configuration" on page 393
■
When configuring PPP and MP, go to these sections for information you are
interested in:
"Introduction to PPP and MP" on page 363
■
"Configuring PPP" on page 367
■
"Configuring MP" on page 374
■
"Configuring PPP Link Efficiency Mechanism" on page 376
■
"Displaying and Maintaining PPP/MP/PPP Link Efficiency Mechanism" on page
■
379
"Troubleshooting PPP Configuration" on page 392
■
PPP Point-to-point protocol (PPP) is a link layer protocol that carries network layer
packets over point-to-point links. It has found wide application because it can
provide user authentication, support synchronous/asynchronous communication,
and can be extended easily.
PPP defines a whole set of protocols, including link control protocol (LCP), network
control protocol (NCP), and authentication protocols like password authentication
protocol (PAP) and challenge handshake authentication protocol (CHAP), where,
LCP is responsible for establishing, removing and monitoring data links.
■
NCP is used to negotiate the format and type of the packets over data links.
■
PAP and CHAP are used for network security
■
PAP authentication
PAP is a two-way handshake authentication protocol using plain text password. It
operates in the following way:
1 The requester sends its username and password to the authenticator.
2 The authenticator then checks if the username and password are correct
according to its local user list and then return responses accordingly (Acknowledge
or Not Acknowledge).
MP C
ONFIGURATION