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Cisco ONS 15454 DWDM Troubleshooting Guide, R7.0.1
78-17742-02
Chapter 1 General Troubleshooting
1.2.3 Create a Facility Loopback on an Intermediate-Node MXP or TXP Port
Step 9 Complete the “Test and Clear the MXP or TXP Port Facility Loopback Circuit” procedure on page 1-15.
Test and Clear the MXP or TXP Port Facility 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 no errors, no further testing is necessary with the facility loopback. Clear the
facility loopback from the port:
a. Click the Maintenance > Loopback tabs.
b. Choose None from the Loopback Type column for the port being tested.
c. Choose the appropriate state to place the port in service, out of service and disabled, out of service
for maintenance, or automatically in service 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 or TXP Card” procedure on page 1-15.
Test the MXP or TXP Card
Step 1 Complete the “Physically Replace a Card” procedure on page 2-172 for the suspected bad card and
replace it with a known-good one.
Warning
High-performance devices on this card can get hot during operation. To remove the card, hold it by
the faceplate and bottom edge. Allow the card to cool before touching any other part of it or before
placing it in an antistatic bag.
Statement 201
Caution Removing a card that currently carries traffic on one or more ports can cause a traffic hit. To avoid this,
perform an external switch if a switch has not already occurred. Refer to the procedures in the
“2.8.1 Protection Switching, Lock Initiation, and Clearing” section on page 2-167. For more
information, refer to the “Maintain the Node” chapter in the Cisco ONS 15454 DWDM Procedure Guide.
Step 2 Resend test traffic on the loopback circuit with a known-good card installed.
Step 3 If the test set indicates no errors, the problem was probably the defective card. Return the defective card
to Cisco through the RMA process. Contact Cisco Technical Support (1-800-553-2447).
Step 4 Complete the “Physically Replace a Card” procedure on page 2-172 for the faulty card.
Step 5 Clear the facility loopback from the port:
a. Click the Maintenance > Loopback tabs.
b. Choose None from the Loopback Type column for the port being tested.
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