Cisco ONS 15454 Troubleshooting Manual page 75

Chapter 1 General Troubleshooting
If a known-good cable is not available, test the suspected bad cable with a test set. (Refer to manufacturer
instructions for test-set use.) Remove the suspected bad cable from the DSx panel or the EIA and connect
the cable to the Tx and Rx terminals of the test set. Run traffic to determine whether the cable is good
or defective.
Step 2 Resend test traffic on the loopback circuit with a known-good cable installed. If the test set indicates a
good circuit, the problem was probably the defective cable.
Replace the defective cable.
Step 3
Step 4 In card view for the electrical card, depending upon the type, click the Maintenance > Loopback tabs,
Maintenance > DS1 tabs, or Maintenance > DS3 tabs.
Note
Choose None from the Loopback Type column for the port being tested.
Step 5
Choose the appropriate state (IS; OOS,DSBLD; OOS,MT; IS,AINS) from the Admin State column for
Step 6
the port being tested.
Click Apply.
Step 7
Click Yes in the confirmation dialog box.
Step 8
Complete the
Step 9
Test the Electrical Card
Complete the
Step 1
and replace it with a known-good one.
Resend test traffic on the loopback circuit with a known-good card installed.
Step 2
If the test set indicates a good circuit, the problem was probably the defective card. Return the defective
Step 3
card to Cisco through the RMA process. Contact Cisco Technical Support at 1 800
Complete the
Step 4
In card view for the electrical card, depending upon the type, click the Maintenance > Loopback tabs,
Step 5
Maintenance > DS1 tabs, or Maintenance > DS3 tabs.
Note
Choose None from the Loopback Type column for the port being tested.
Step 6
Choose the appropriate state (IS; OOS,DSBLD; OOS,MT; IS,AINS) from the Admin State column for
Step 7
the port being tested.
Step 8 Click Apply.
Click Yes in the confirmation dialog box.
Step 9
Complete the
Step 10
November 2009
1.2.5 Perform a Facility Loopback on a Destination-Node Electrical Port (East to West)
The DS-3 Admin State is the basis of the DS-1 Derived State.
"Test the Electrical Card" procedure on page
"Physically Replace a Traffic Card" procedure on page 2-273
"Physically Replace a Traffic Card" procedure on page 2-273
The DS-3 Admin State is the basis of the DS-1 Derived State.
"Test the EIA" procedure on page
1-31.
1-32.
Cisco ONS 15454 Troubleshooting Guide, R8.5
for the suspected bad card
553-2447.
for the faulty card.
1-31