Specifications

Chapter 7 Configuring Frame Relay
Frame Relay with an Internal DSU/CSU
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Cisco 1700 Series Router Software Configuration Guide
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Configuring the Frame Relay Interface
Follow these steps to configure the serial interface, which connects your router to
the central-site router over the wide-area network.
Verifying Your Configuration
You can verify your configuration to this point by
• Confirming That the Line Is Up
• Confirming That the Interface Is Receiving a Line Signal
Command Task
Step1
interface Serial0 Enter configuration mode for the serial
interface.
Step2
no ip address Disable IP routing on this interface.
Step3
encapsulation frame-relay Set the encapsulation method on this interface
to Frame Relay.
Step4
service-module 56k clock source line Configure the clock source for the 56-kbps
DSU/CSU module.
In most applications, the DSU/CSU should be
configured with the clock source line
command. For back-to-back DSU/CSU
configurations, configure one DSU/CSU with
the clock source internal command, and
configure the other with the clock source line
command.
Step5
service-module 56k network type dds Configure this interface to transmit packets in
switched dial-up mode or digital data service
mode using the 56-kbps DSU/CSU module.
If the clock rate has not been set correctly
with the service-module 56k clock source
line command, this command will not be
accepted by the router.