1-21
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
Note After the active cross-connect goes into standby mode, the original standby card becomes
active and its ACT/SBY LED turns green. The former active card becomes standby and its
ACT/SBY LED turns amber.
Step 3 Resend test traffic on the loopback circuit.
The test traffic now travels through the alternate cross-connect card.
Step 4 If the test set indicates a faulty circuit, assume the cross-connect card is not causing the problem. Clear
the XC loopback circuit:
a. Click the Circuits tab.
b. Choose the XC loopback circuit being tested.
c. Click Delete.
d. Click Yes in the Delete Circuits dialog box. Do not check any check boxes.
e. Confirm that the XC loopback circuit is deleted from the Circuits tab list. If the test set indicates a
good circuit, the problem might be a defective cross-connect card.
Step 5 To confirm a defective original cross-connect card, complete the “Retest the Original Cross-Connect
Card” procedure on page 1-21.
Retest the Original Cross-Connect Card
Note This procedure is performed only on OC-N and cross-connect cards.
Step 1 Initiate an external switching command (side switch) on the cross-connect cards.
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 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.
Note After the active cross-connect goes into standby mode, the original standby card becomes
active and its ACT/SBY LED turns green. The former active card becomes standby and its
ACT/SBY LED turns amber.
Step 2 Resend test traffic on the loopback circuit.
Step 3 If the test set indicates a faulty circuit, the problem is probably the defective card. Return the defective
card to Cisco through the RMA process. Contact Cisco Technical Support at 1 800 553-2447 and
proceed to Step 4. If the circuit is not shown to be faulty and the card is not shown to be defective, you
are finished with testing.
Step 4 Complete the “Physically Replace an In-Service Cross-Connect Card” procedure on page 2-274 for the
defective cross-connect card and perform Step 5.
To Next Page
Loading...
