Cisco ONS 15454 SDH - Test and Clear the MXP;TXP;FC_MR Facility (Line) Loopback Circuit; Test the MXP;TXP;FC_MR Card

1-92
Cisco ONS 15454 SDH Troubleshooting Guide, R5.0
July 2005
Chapter 1 General Troubleshooting
1.5.5 Perform a Facility (Line) Loopback on a Destination-Node MXP/TXP/FC_MR Port
Step 2 Adjust the test set accordingly.
Step 3 Create the facility (line) loopback on the destination port being tested:
a. 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.
b. In node view, double-click the card that requires the loopback.
c. Click the Maintenance > Loopback tab.
d. Select Locked,maintenance from the Admin State column. If this is a multiport card, select the row
appropriate for the desired port.
e. Select Facility (Line) from the Loopback Type column. If this is a multiport card, select the row
appropriate for the desired port.
f. Click Apply.
g. Click Yes in the confirmation dialog box.
Step 4 Complete the “Test and Clear the MXP/TXP/FC_MR Facility (Line) Loopback Circuit” procedure on
page 1-92.
Test and Clear the MXP/TXP/FC_MR Facility (Line) Loopback Circuit
Step 1 If the test set is not already sending traffic, send test traffic on the loopback circuit.
Step 2 Examine the traffic received by the test set. Look for errors or any other signal information that the test
set is capable of indicating.
Step 3 If the test set indicates a good circuit, no further testing is necessary with the facility loopback. Clear the
facility (line) loopback from the port:
a. Click the Maintenance > Loopback tab.
b. Choose None from the Loopback Type column for the port being tested.
c. Choose the appropriate state (Unlocked; Locked,disabled; Unlocked,automaticInService) from the
Admin State column for the port being tested.
d. Click Apply.
e. Click Yes in the confirmation dialog box.
Step 4 Complete the “Test the MXP/TXP/FC_MR Card” procedure on page 1-92.
Test the MXP/TXP/FC_MR Card
Step 1 Complete the “Physically Replace a Traffic Card” procedure on page 2-271 for the suspected bad card
and replace it with a known-good one.