Cisco Cisco ONS 15600 SDH, Troubleshooting Manual

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1-15
Cisco ONS 15600 SDH Troubleshooting Guide, R8.0
July 2010
Chapter 1 General Troubleshooting
1.2.3 Perform an XC Loopback on the Source Optical Port
d.
Click Yes in the confirmation dialog box.
Step 4 Complete the “Test the Alternate SSXC Card” procedure on page 1-15 .
Test the Alternate SSXC Card
Step 1 Do a manual data copy switch of the SSXC cards before retesting the XC loopback circuit:
a.
In node view, select the Maintenance > Preferred Copy tabs.
b.
In the Set Preferred drop-down list, select the alternate copy. (For example, if Copy B is preferred
and in use, select Copy A.)
Note CTC Copy A refers to the SSXC card in Slot 6. Copy B refers to the SSXC card in Slot 8.
Either copy might be chosen as the preferred copy SSXC. The other SSXC is called the
alternate SSXC in this chapter.
c. Click Apply .
d.
Click Yes in the confirmation dialog box.
Note
If you attempt a preferred copy switch and the switch is unsuccessful, a problem is present
with the alternate SSXC.
e.
Click Refresh until the tab shows that the alternate copy you selected is now the preferred copy. The
Currently Used field will show the newly-selected preferred copy.
Step 2 Resend test traffic on the XC loopback circuit.
The test traffic now travels through the alternate cross-connect card.
Step 3 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 4 To confirm a defective preferred cross-connect card, complete the “Retest the Preferred SSXC Card”
procedure on page 1-15 .
Retest the Preferred SSXC Card
Step 1
Do a manual data copy switch of the SSXC cards before retesting the loopback circuit:
a. In node view, select the Maintenance > Preferred Copy tabs.