AIS user manual AI2524 Sync PPP Configuration Steps, Introduction Configuration Overview

Chapter 11: AI2524 Sync PPP Configuration Steps

Chapter 11: AI2524 Sync PPP

Configuration Steps

Introduction

Configuration Overview

This chapter describes how to enable PPP encapsulation and perform a variety of PPP configuration tasks.

The Point-to-Point Protocol (PPP), described in RFCs 1661 and 1332, encapsulates network layer protocol information over point-to-point links. You can configure PPP on these physical interfaces:

zAsynchronous serial

zHSSI

zISDN

zSynchronous serial

The software provides PPP as an encapsulation method. It also pro- vides the Challenge Handshake Authentication Protocol (CHAP) and Password Authentication Protocol (PAP) on serial interfaces running

PPPencapsulation. By enabling PPP encapsulation on physical inter faces, PPP can also be used on calls placed by dialer interfaces that use physical interfaces.

The current implementation of PPP supports option 3, authentication using CHAP or PAP, option 4, Link Quality Monitoring, and option 5, Magic Number configuration options. The software always sends op- tion 5 and negotiates for options 3 and 4 if so configured. All other op- tions are rejected.

Magic Number support is available on all serial interfaces. PPP always attempts to negotiate for Magic Numbers, which are used to detect looped-back lines. Depending on how th down-when-loopedcommand is configured, the router might shut down a link if it detects a loop.

The AI2524 supports the following upper-layer protocols: Bridging,

CLNS, IP, and IPX.

August 1997	Page 11-1
2524UM