Cisco ONS 15454 Troubleshooting Manual page 79

Chapter 1 General Troubleshooting
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, with the exception of side switches using XC-VXC-10G cards, are
Caution
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.
b.
c.
d.
Resend test traffic on the loopback circuit.
Step 3
The test traffic now travels through the alternate cross-connect card.
If the test set indicates a faulty circuit, assume the cross-connect card is not causing the problem. Clear
Step 4
the hairpin circuit:
a.
b.
c.
d.
e.
To confirm a defective original cross-connect card, complete the
Step 5
Card" procedure on page
Retest the Original Cross-Connect Card
Initiate an external switching command (side switch) on the cross-connect cards:
Step 1
a.
b.
c.
d.
November 2009
Click Yes in the confirmation dialog box.
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.
In the node view, select the Maintenance > Cross-Connect > Cards tabs.
In the Cross-Connect Cards area, click Switch.
Click Yes in the Confirm Switch dialog box.
After the active cross-connect goes into standby mode, the original standby card becomes
Note
active and its ACT/SBY LED turns green. The former active card becomes standby and its
ACT/SBY LED turns amber.
Click the Circuits tab.
Choose the hairpin circuit being tested.
Click Delete.
Click Yes in the Delete Circuits dialog box. Do not check any check boxes.
Confirm that the hairpin circuit is deleted from the Circuits tab list.
1-35.
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.
In node view, select the Maintenance > Cross-Connect > Cards tabs.
From the Cross-Connect Cards menu, choose Switch.
Click Yes in the Confirm Switch dialog box.
1.2.6 Perform a Hairpin Test on a Destination-Node Electrical Port (East to West)
Cisco ONS 15454 Troubleshooting Guide, R8.5
"Retest the Original Cross-Connect
1-35