Cisco ONS 15454 - Test and Clear the XC Loopback Circuit; Test the Standby Cross-Connect Card

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Cisco ONS 15454 Troubleshooting Guide, R8.5
November 2009
Chapter 1 General Troubleshooting
1.2.3 Perform an XC Loopback on a Destination-Node OC-N STS (West to East) Carrying an Electrical Signal
Test and Clear the XC Loopback Circuit
Note This procedure is performed only on OC-N cards.
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. In card view, click the Maintenance > Loopback > SONET STS tabs.
b. Uncheck the check box in the XC Loopback column for the circuit being tested.
c. Click Apply.
d. Click Yes in the confirmation dialog box.
Step 4 Complete the “Test the Standby Cross-Connect Card” procedure on page 1-20.
Test the Standby Cross-Connect Card
Step 1 Perform a reset on the standby cross-connect card:
a. Determine the standby cross-connect card. On both the physical node and the CTC node view
window, the standby cross-connect ACT/SBY LED is amber and the active card ACT/SBY LED is
green.
b. Position the cursor over the standby cross-connect card.
c. Right-click and choose RESET CARD.
d. Click Yes in the confirmation dialog box.
Step 2 Initiate an external switching command (side switch) on the cross-connect cards before you retest the
loopback circuit:
Caution Cross-connect side switches, with the exception of side switches using XC-VXC-10G cards, are
service-affecting. Any live traffic on any card in the node endures a hit of up to 50 ms. XC-VXC-10G side
switches are errorless.
a. Determine the standby cross-connect card. On both the physical node and the CTC node view
window, the standby cross-connect ACT/SBY LED is amber and the active card ACT/SBY LED is
green.
b. In the node view, select the Maintenance > Cross-Connect > Card tabs.
c. In the Cross-Connect Cards area, click Switch.
d. Click Yes in the Confirm Switch dialog box.