Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010, Configuration Manual

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Chapter 17
Configuring Dynamic Interfaces
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
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Platform Considerations on page 521
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References on page 522
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About Configuring Dynamic Interfaces over Static ATM on page 522
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Configuring PPP and PPPoE Dynamic Interfaces over Static ATM on page 528
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Configuring PPPoE Dynamic Interfaces over PPPoE Static Interfaces on page 534
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Configuring IPoA Dynamic Interfaces on page 553
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Configuring Bridged Ethernet Dynamic Interfaces on page 557
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Configuring a Dynamic Interface from a Profile on page 563
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Scripts and Macros on page 598
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Monitoring Upper-Layer Dynamic Interfaces and Profiles on page 599
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Troubleshooting PPP and PPPoE Dynamic Interfaces on page 619
Overview
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
Overview
■ 515