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Configuring the PA-E3 Interfaces 8-21
Using the loopback Command to Verify the Physical Interface
• Set the interface into network payload loopback mode as follows:
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
router(config)# interface serial 10/0/0
router(config-if)# loopback network payload
Network payload loopback loops just the payload data back toward the network at the E3 framer.