Cisco ONS 15454 SDH - Retest the Original XC-VXL Cross-Connect Card

1-16
Cisco ONS 15454 SDH Troubleshooting Guide, R5.0
July 2005
Chapter 1 General Troubleshooting
1.2.2 Perform a Hairpin Test on a Source-Node Electrical Port (West to East)
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 are service-affecting. Any live traffic on any card in the node endures a hit
of up to 50 ms.
a. Determine the standby cross-connect card. On both the physical node and the CTC node view
window, the standby cross-connect ACT/STBY LED is amber and the active card ACT/STBY LED
is green.
b. In the node view, select the Maintenance > Cross Connect > Cards tabs.
c. In the Cross Connect Cards menu, 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/STBY LED turns green. The former active card becomes standby and its
ACT/STBY 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 hairpin circuit:
a. Click the Circuits tab.
b. Choose the hairpin circuit being tested.
c. Click Delete.
d. Click Ye s in the Delete Circuits dialog box. Do not check any check boxes. Do not check any check
boxes.
e. Confirm that the hairpin circuit is deleted form the Circuits tab list.
Step 5 To confirm a defective original cross-connect card, complete the “Retest the Original XC-VXL
Cross-Connect Card” procedure on page 1-16.
Retest the Original XC-VXL Cross-Connect Card
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/STBY LED is amber and the active cross-connect
ACT/STBY LED is green.
b. In node view, select the Maintenance > Cross Connect > Cards tabs.
c. From the Cross Connect Cards menu, choose Switch.
d. Click Yes in the Confirm Switch dialog box.