Chapter 17 Configuring Dynamic Interfaces; Overview - Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010 Configuration Manual

Chapter 17
Configuring Dynamic Interfaces

Overview

This chapter explains upper-layer dynamic interfaces and describes the procedures
for configuring them on E Series routers.
This chapter contains the following sections:
Overview on page 515
Platform Considerations on page 521
References on page 522
About Configuring Dynamic Interfaces over Static ATM on page 522
Configuring PPP and PPPoE Dynamic Interfaces over Static ATM on page 528
Configuring PPPoE Dynamic Interfaces over PPPoE Static Interfaces on page 534
Configuring IPoA Dynamic Interfaces on page 553
Configuring Bridged Ethernet Dynamic Interfaces on page 557
Configuring a Dynamic Interface from a Profile on page 563
Scripts and Macros on page 598
Monitoring Upper-Layer Dynamic Interfaces and Profiles on page 599
Troubleshooting PPP and PPPoE Dynamic Interfaces on page 619
Before you begin configuring dynamic interfaces, review the concepts described in
this section.
A dynamic interface is created automatically and transparently through some external
event, typically through the receipt of data over a lower-layer link, such as an ATM
virtual circuit (VC) or a virtual LAN (VLAN) through a process known as autodetection.
The layers of a dynamic interface are created based on the packets received on the
link and can be configured through any one of the following:
RADIUS authentication
Profiles
A combination of RADIUS authentication and profiles
515
Overview