6. Choose Facility (Line) from the Loopback Type column for the port being tested. If this is a multiport
card, select the appropriate row for the desired port.
7. Click Apply.
8. Click Yes in the confirmation dialog box.
9. Complete the Test and Clear the MXP, TXP, XP or ADM-10G Facility Loopback Circuit, on page 10.
DETAILED STEPS
Step 1 Connect an optical test set to the port you are testing.
For specific procedures to connect, set up, and use the test set equipment, consult the manufacturer.
Note
Use appropriate cabling to attach the transmit (Tx) and receive (Rx) terminals of the optical test set to the port you are
testing. The Tx and Rx terminals connect to the same port.
Step 2 Adjust the test set accordingly. (Refer to manufacturer instructions for test set use.)
Step 3 In node view (single-shelf mode) or shelf view (multishelf mode), double-click the card to display the card view.
Step 4 Click the Maintenance > Loopback tabs.
Step 5 Choose OOS,MT (or locked,maintenance) from the Admin State column for the port being tested. If this is a multiport
card, select the appropriate row for the desired port.
Step 6 Choose Facility (Line) from the Loopback Type column for the port being tested. If this is a multiport card, select the
appropriate row for the desired port.
Step 7 Click Apply.
Step 8 Click Yes in the confirmation dialog box.
It is normal for the LPBKFACILITY (ESCON) , on page 292, LPBKFACILITY (FC) , on page 293,
LPBKFACILITY (GE) , on page 293, LPBKFACILITY (ISC) , on page 294, or the LPBKFACILITY (TRUNK)
, on page 295 to appear during loopback setup. The condition clears when you remove the loopback.
Note
Step 9 Complete the Test and Clear the MXP, TXP, XP or ADM-10G Facility Loopback Circuit, on page 10.
Test and Clear the MXP, TXP, XP or ADM-10G Facility Loopback Circuit
SUMMARY STEPS
1. If the test set is not already sending traffic, send test traffic on the loopback circuit.
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.
3. If the test set indicates no errors, no further testing is necessary with the facility loopback. Clear the facility
loopback:
4. If the test set indicates errors, complete the Test the MXP, TXP, XP or ADM-10G Card, on page 11.
DETAILED STEPS
Step 1 If the test set is not already sending traffic, send test traffic on the loopback circuit.
Cisco NCS 2000 series Troubleshooting Guide, Release 11.0
10
General Troubleshooting
Test and Clear the MXP, TXP, XP or ADM-10G Facility Loopback Circuit
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