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1.3.3 Perform an XC Loopback on the Source Optical Port
b.
Adjust the test set accordingly.
Step 2
Step 3
Use CTC to put the circuit being tested out of service:
a.
b.
c.
d.
e.
f.
Use CTC to set up the XC loopback on the circuit being tested:
Step 4
a.
b.
c.
d.
e.
Complete the
Step 5
Test and Clear the XC Loopback Circuit
Note
This procedure is performed only on optical cards.
If the test set is not already sending traffic, send test traffic on the loopback circuit.
Step 1
Examine the test traffic received by the test set. Look for errors or any other signal information that the
Step 2
test set is capable of indicating.
If the test set indicates a good circuit, no further testing is necessary with the cross-connect. Clear the
Step 3
XC loopback:
a.
b.
c.
d.
Complete the
Step 4
Cisco ONS 15454 SDH Troubleshooting Guide, R5.0
1-46
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.
In node view, click the Circuits tab.
Click the circuit and then click Edit.
In the Edit Circuit dialog box, click the State tab.
Choose Locked,maintenance from the Target Circuit State drop-down list.
Click Apply.
Click Yes in the confirmation dialog box.
In node view, double-click the optical card to display the card view.
Click the Maintenance > Loopback > VC4 tabs.
Click the check box in the XC Loopback column for the port being tested.
Click Apply.
Click Yes in the confirmation dialog box.'
"Test and Clear the XC Loopback Circuit" procedure on page
In card view, click the Maintenance > Loopback > VC4 tabs.
Uncheck the check box in the XC Loopback column for the circuit being tested.
Click Apply.
Click Yes in the confirmation dialog box.
"Test the Standby XC-VXL Cross-Connect Card" procedure on page
Chapter 1
General Troubleshooting
1-46.
1-47.
July 2005
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