Configuring Point-To-Point Protocol; Overview; Framing - Juniper JUNOSE SOFTWARE 11.0.X - LINK LAYER CONFIGURATION GUIDE 4-1-2010 Configuration Manual

Chapter 7

Configuring Point-to-Point Protocol

Overview

Framing

This chapter describes how to configure a Point-to-Point Protocol (PPP) interface on
E Series routers.
This chapter contains the following sections:
Overview on page 227
Platform Considerations on page 237
References on page 238
Before You Configure PPP on page 239
Configuration Tasks on page 239
Optional Configuration Tasks on page 242
PPP Accounting Statistics on page 249
Monitoring PPP Interfaces on page 250
Troubleshooting on page 264
PPP provides a standard method for transporting multiprotocol datagrams over a
point-to-point link. PPP uses the High-Speed Data Link Control (HDLC) protocol for
its physical interface and provides a packet-oriented interface for the network-layer
protocols.
Internet Protocol Control Protocol (IPCP) (which negotiates for transport of IP version
4 datagrams), IPv6CP (which negotiates for transport of IP version 6 datagrams), the
OSI Network Layer Control Protocols (OSINLCPs), and Multiprotocol Label Switching
(MPLS) run within PPP.
The router supports dynamic PPP interfaces. For details, see "Configuring Dynamic
Interfaces" on page 465.
The software restricts the use of the general HDLC protocol (RFC 1662) to unnumbered
mode:
HDLC address field is 0xFF (all stations)
HDLC control field is 0x03 (to indicate unnumbered mode)
227
Overview