Specifications

Chapter 7 Configuring Frame Relay
ISDN as the Backup WAN Connection
7-24
Cisco 1700 Series Router Software Configuration Guide
78-5407-03
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.
Step8
frame-relay interface-dlci 17 Assign a (DLCI) to the Frame Relay
subinterface.
Step9
no shutdown Enable the interface and the configuration
changes that you have just made on the
interface.
Step10
exit Exit configuration mode for this interface.
Command Task
Command Task
Step1
interface BRI0 Enter configuration mode for the ISDN
interface.
Step2
isdn spid1 555987601 Enter the service profile identifier (SPID)
number assigned by the ISDN service
provider to the B1 channel.
This step is required only when the service
provider has assigned a SPID to your ISDN
line. Not all ISDN lines have SPIDs.
Step3
isdn spid2 555987602 Define the SPID number assigned by the
ISDN service provider to the B2 channel.
This step is required only when the service
provider has assigned a SPID to your ISDN
line. Not all ISDN lines have SPIDs.
Step4
ip unnumbered fastethernet0 Enable IP routing on this interface without
assigning an IP address.
Step5
ipx network 1234 Define the IPX network number for this
interface.
Step6
encapsulation ppp Set the encapsulation method on this interface
to PPP.