Test The Xc Loopback Circuit - Cisco ONS 15454 Troubleshooting Manual

1.3.3 Perform an XC Loopback on a Destination Node OC-N STS (West to East)
Note
a.
b.
c.
Use CTC to put the circuit being tested out of service:
Step 2
a.
b.
c.
d.
e.
f.
Step 3 Use CTC to set up the XC loopback on the circuit being tested:
a.
b.
c.
d.
e.
Complete the
Step 4

Test the XC Loopback Circuit

This procedure is performed only on OC-N cards.
Note
Step 1 If the test set is not already sending traffic, send test traffic on the loopback circuit.
Step 2 Examine the test traffic received by the test set. Look for errors or any other signal information that the
test set is capable of indicating.
Step 3 If the test set indicates a good circuit, no further testing is necessary with the cross-connect. Clear the
XC loopback:
a.
b.
c.
d.
Cisco ONS 15454 Troubleshooting Guide, R4.6
1-16
Refer to the manufacturer's instructions for detailed information about connection and setup of
the optical test set.
If you just completed the "1.5.2 Perform a Terminal (Inward) Loopback on a Source-Node OC-N,
G-Series, MXP, or TXP Port" section on page
destination node port.
If you are starting the current procedure without the optical test set hooked up to the destination 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.
Adjust the test set accordingly.
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 OOS-MT from the Target Circuit State drop-down list.
Click Apply.
Click Yes in the confirmation dialog box.
In node view, double-click the OC-N card to open the card view.
Click the Provisioning > SONET STS tabs.
Click the check box in the XC Loopback column for the port being tested.
Click Apply.
Click Yes in the confirmation dialog.
"Test the XC Loopback Circuit" procedure on page
In card view, click the Provisioning > SONET STS tabs.
Uncheck the check box in the XC Loopback column for the circuit being tested.
Click Apply.
Click Yes in the confirmation dialog.
Chapter 1
1-40, leave the optical test set hooked up to the
1-45.
General Troubleshooting
November 2004