Specifications

Chapter 7 Configuring Frame Relay
ISDN as a Backup Connection with Dialer Profiles
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Cisco 1700 Series Router Software Configuration Guide
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Configuring the ISDN Interface
Follow these steps to configure the ISDN line to act as a backup connection in the
event of failure of the Frame Relay connection.
Configuring the Backup Connection to the First Central-Site
Router
Follow these steps to configure the ISDN backup connection to one central-site
router.
Command Task
Step1
interface BRI0 Enter configuration mode for this interface.
Step2
encapsulation ppp Configure this interface for PPP packet
encapsulation.
Step3
dialer pool-member 1 Assign this interface to a dialer pool.
Step4
no shutdown Enable the configuration changes on this
interface.
Step5
exit Exit configuration mode for this interface.
Command Task
Step1
interface Dialer1 Create an ISDN dialer interface, and enter
configuration mode for the interface.
The number that you assign in this command
must match the number you assigned with the
backup interface command when you
configured the primary connection to the first
central-site router.
Step2
ip unnumbered fastethernet0 Enable IP routing without assigning an IP
address.
Step3
encapsulation ppp Configure this interface for PPP packet
encapsulation.