Configuring Point-To-Point Protocol; Overview; Framing - Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010 Configuration Manual

Chapter 8

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 263
Platform Considerations on page 273
References on page 274
Before You Configure PPP on page 275
Configuration Tasks on page 275
Optional Configuration Tasks on page 278
PPP Accounting Statistics on page 285
Monitoring PPP Interfaces on page 286
Troubleshooting on page 300
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 515.
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)
263
Overview