Cisco ONS 15454 SDH - Create the Terminal Loopback on a Destination-Node MXP;TXP;FC_MR Port; Test and Clear the MXP;TXP;FC_MR Terminal Loopback Circuit

1-94
Cisco ONS 15454 SDH Troubleshooting Guide, R5.0
July 2005
Chapter 1 General Troubleshooting
1.5.6 Perform a Terminal Loopback on a Destination-Node MXP/TXP/FC_MR Port
Complete the “Create the Terminal Loopback on a Destination-Node MXP/TXP/FC_MR Port”
procedure on page 1-94.
Create the Terminal Loopback on a Destination-Node MXP/TXP/FC_MR Port
Step 1 Connect an optical test set to the port you are testing:
Note Refer to the manufacturer’s instructions for detailed information about connection and setup of
the optical test set.
a. If you just completed the “1.5.5 Perform a Facility (Line) Loopback on a Destination-Node
MXP/TXP/FC_MR Port” procedure on page 1-91, leave the optical test set hooked up to the source
port.
b. 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.
Step 2 Adjust the test set accordingly.
Step 3 Confirm that the newly created circuit appears on the Circuits tab list as a two-way circuit.
Note It is normal for the “LPBKTERMINAL (TRUNK)” condition on page 2-175 or the
“LPBKFACILITY (FCMR)” condition on page 2-168 to appear during a loopback setup. The
condition clears when you remove the loopback.
Step 4 Create the terminal 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 Terminal (Inward) 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 5 Complete the “Test and Clear the MXP/TXP/FC_MR Terminal Loopback Circuit” procedure on
page 1-94.
Test and Clear the MXP/TXP/FC_MR Terminal Loopback Circuit
Step 1 If the test set is not already sending traffic, send test traffic on the loopback circuit.