
308639-14.00 Rev 00
2-1
Chapter 2
PPP Concepts
This chapter describes PPP concepts that can help you decide how to customize
PPP parameters for your system. This chapter also addresses special configuration
features of the Nortel Networks implementation of PPP services. The following
sections describe each of these items.
Topic Page
PPP Overview 2-2
Routing over a PPP Link 2-4
Initializing a PPP Interface 2-5
Authenticating the PPP Link: PAP and CHAP 2-8
Negotiating Network Layer Protocols 2-9
Datagram Encapsulation 2-10
PPP Dial Services Support 2-10
PPP Multiline 2-12
PPP Multilink 2-12
Differences Between Multiline and Multilink 2-17
Monitoring PPP Link Quality 2-20
PPP Data Compression 2-22
Synchronous Versus Asynchronous Connections 2-23
Configuring IP to Run over PPP Interfaces 2-25
Detecting Loopback Conditions 2-25
PPP Interoperability 2-25
Stopping the Flow of Traffic over a PPP Interface 2-26
Where to Go Next 2-26
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