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1.2.6 Perform a Hairpin Test on a Destination-Node Electrical Port (East to West)
If the test set indicates a good circuit, no further testing is necessary with the hairpin circuit. Clear the
Step 3
hairpin circuit:
a.
b.
c.
d.
e.
Complete the
Step 4
Test the Standby XC-VXL Cross-Connect Card
Two XC-VXL cross-connect cards (active and standby) must be in use on a node to use this procedure.
Note
Perform a reset on the standby XC-VXL cross-connect card to make it the active card:
Step 1
a.
b.
c.
d.
Initiate an external switching command (side switch) on the cross-connect cards before you retest the
Step 2
loopback circuit:
Cross-connect side switches are service-affecting. Any live traffic on any card in the node endures a hit
Caution
of up to 50 ms.
a.
b.
c.
d.
Resend test traffic on the loopback circuit.
Step 3
The test traffic now travels through the alternate cross-connect card.
Cisco ONS 15454 SDH Troubleshooting Guide, R5.0
1-30
Click the Circuits tab.
Choose the hairpin circuit being tested.
Click Delete.
Click Yes in the Delete Circuits box.
Confirm that the hairpin circuit is deleted form the Circuits tab list.
"Test the Standby XC-VXL Cross-Connect Card" procedure on page
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.
Position the cursor over the standby cross-connect card.
Right-click and choose RESET CARD.
Click Yes in the confirmation dialog box.
Determine the standby XC-VXL 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.
In the node view, select the Maintenance > Cross-Connect > Card tabs.
In the Cross-Connect Cards area, click Switch.
Click Yes in the Confirm Switch dialog box.
After the active XC-VXL cross-connect goes into standby mode, the original standby card
Note
becomes active and its ACT/STBY LED turns green. The former active card becomes
standby and its ACT/STBY LED turns amber.
Chapter 1
General Troubleshooting
1-30.
July 2005
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