Configuration Example

This example shows how to configure Cisco HDLC over an unchannelized DS3 interface on a cOCx/STMx line module. The example shows the complete configuration procedure, from configuring the SONET interface to assigning an IP address to the Cisco HDLC interface.

1. Create or select a virtual router, vr1.

   host1(config)#virtual-router vr1

2. Configure SONET controller, slot 13, port 0.

   host1:vr1(config)#controller sonet 13/0

3. Set the SONET clock source to internal.

   host1:vr1(config-controll)#clock source internal module

4. Create an OC1 path.

   host1:vr1(config-controll)#path 1 oc1 1

5. Create an unchannelized DS3 interface.

   host1:vr1(config-controll)#path 1 ds3 1 unchannelized

6. Set the DS3 interface clock source to internal.

   host1:vr1(config-controll)#path 1 ds3 1 clock source internal module

7. Exit Controller Configuration mode.

   host1:vr1(config-controll)#exit

8. Create or select a serial interface over the DS3 interface.

   host1:vr1(config)#interface serial 13/0:1/1

9. Set the encapsulation to Cisco HDLC.

   host1:vr1(config-if)#encapsulation hdlc

10. Enable loopback detection on the interface.

    host1:vr1(config-if)#hdlc down-when-looped

11. Assign an IP address to the interface.

    host1:vr1(config-if)#ip address 160.1.0.1 255.255.255.0

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