Configuring Ddr; Overview; Interfaces In Ddr; Ddr Implementations - HP MSR Router Series Wan Access Configuration Manual

Configuring DDR

Overview

As shown in
• Setting up a dialup connection over PSTN/ISDN when communication needs arise.
Tearing down the connection when the communication is complete.
•
Figure 54 DDR communication process
In addition to PSTN/ISDN, Ethernet and ATM use DDR to implement access control. For more information,
see "Configuring PPPoE" and "Configuring ATM."

Interfaces in DDR

DDR uses the following dialup interfaces:
Physical interfaces—Include the following interfaces:
•
Asynchronous serial interfaces.
Synchronous/asynchronous serial interfaces operating in asynchronous mode.
AM interfaces.
AUX interfaces.
ISDN BRI interfaces.
ISDN PRI interfaces.
Cellular interfaces.
Dialer interfaces—Logical interfaces on which DDR parameters are configured.
•

DDR implementations

DDR supports traditional DDR and bundle DDR.
Figure 54, routers use dial-on-demand routing (DDR) for the following purposes:
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