Cisco ONS 15454 - Create the XC Loopback on the Source OC-N Port Carrying an Electrical Circuit

1-37
Cisco ONS 15454 Troubleshooting Guide, R8.5
November 2009
Chapter 1 General Troubleshooting
1.2.7 Perform an XC Loopback on a Source-Node OC-N STS (East to West) Carrying an Electrical Circuit
Figure 1-17 XC Loopback on a Source OC-N Port
Complete the “Create the XC Loopback on the Source OC-N Port Carrying an Electrical Circuit”
procedure on page 1-37.
Create the XC Loopback on the Source OC-N Port Carrying an Electrical Circuit
Step 1 Connect an optical test set to the port you are testing:
Note For specific procedures to connect, set up, and use the test set equipment, consult the
manufacturer.
a. If you just completed the “1.2.6 Perform a Hairpin Test on a Destination-Node Electrical Port (East
to West)” procedure on page 1-33, leave the optical test set hooked up to the source-node port.
b. If you are starting the current procedure without the optical test set hooked up to the source port,
use appropriate cabling to attach the Tx and Rx terminals of the optical test set to the port you are
testing. The Tx and Rx terminals connect to the same port.
Step 2 Adjust the test set accordingly. (Refer to manufacturer instructions for test-set use.)
Step 3 Use CTC to put the circuit being tested out of service:
a. In node view, click the Circuits tab.
b. Click the circuit and then click Edit.
c. In the Edit Circuit dialog box, click the State tab.
d. Choose OOS,MT from the Target Circuit Admin State drop-down list.
e. Click Apply.
f. Click Yes in the confirmation dialog box.
Step 4 Use CTC to set up the XC loopback on the circuit being tested:
a. In node view, double-click the OC-N card to open the card view.
b. Click the Maintenance > Loopback > SONET STS tabs.
c. Check the XC Loopback column check box for the port being tested.
d. Click Apply.
e. Click Yes in the confirmation dialog box.
Step 5 Complete the “Test and Clear the XC Loopback Circuit” procedure on page 1-38.
XC
Te s t Se t
OC-Ny
OC-Nx
83750