Cisco ONS 15454 Troubleshooting Manual page 148

1.6.5 Perform a Facility Loopback on a Destination-Node FC_MR Port
b.
Adjust the test set accordingly. (Refer to manufacturer instructions for test-set use.)
Step 2
Create the facility loopback on the destination port being tested:
Step 3
a.
b.
c.
d.
e.
f.
g.
Step 4 Complete the
Test and Clear the FC_MR Facility Loopback Circuit
If the test set is not already sending traffic, send test traffic on the loopback circuit.
Step 1
Examine the traffic received by the test set. Look for errors or any other signal information that the test
Step 2
set is capable of indicating.
If the test set indicates a good circuit, no further testing is necessary with the facility loopback. Clear the
Step 3
facility loopback from the port:
a.
b.
c.
d.
e.
Step 4 Complete the
Test the FC_MR Card
Complete the
Step 1
and replace it with a known-good one.
Step 2 Resend test traffic on the loopback circuit with a known-good card installed.
Cisco ONS 15454 Troubleshooting Guide, R8.5
1-104
If you are starting the current procedure without the optical test set hooked up to the source port,
use appropriate cabling to attach the Tx and Rx terminals of the optical test set to the port you are
testing. Both Tx and Rx connect to the same port.
Go to the node view of the destination node:
Choose View > Go To Other Node from the menu bar.
•
• Choose the node from the drop-down list in the Select Node dialog box and click OK.
In node view, double-click the card that requires the loopback.
Click the Maintenance > Loopback tabs.
Select OOS,MT from the Admin State column. If this is a multiport card, select the row appropriate
for the desired port.
Select Facility from the Loopback Type column. If this is a multiport card, select the row
appropriate for the desired port.
Click Apply.
Click Yes in the confirmation dialog box.
"Test and Clear the FC_MR Facility Loopback Circuit" procedure on page
Click the Maintenance > Loopback tabs.
Choose None from the Loopback Type column for the port being tested.
Choose the appropriate state (IS; OOS,DSBLD; OOS,MT; IS,AINS) from the Admin State column
for the port being tested.
Click Apply.
Click Yes in the confirmation dialog box.
"Test the FC_MR Card" procedure on page
"Physically Replace a Traffic Card" procedure on page 2-273
Chapter 1 General Troubleshooting
1-104.
for the suspected bad card
1-104.
November 2009