Test And Clear The Mxp Or Txp Port Facility Loopback Circuit - Cisco NCS 2000 series Troubleshooting Manual

General Troubleshooting

Test and Clear the MXP or TXP Port 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 from the port:
4. If the test set indicates errors, complete the
DETAILED STEPS
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.
f) Complete the
Step 4
If the test set indicates errors, complete the
Test the MXP or TXP Card
SUMMARY STEPS
1. Complete the
known-good one.
2. Resend test traffic on the loopback circuit with a known-good card installed.
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.
4. Clear the facility loopback from the port:
5. Complete the
DETAILED STEPS
Step 1
Complete the Physically Replace a Card, on page 453
Create a Terminal Loopback on Intermediate-Node MXP or TXP Ports, on page
Test the MXP or TXP Card, on page
Physically Replace a Card, on page 453
Create a Terminal Loopback on Intermediate-Node MXP or TXP Ports, on page
Test and Clear the MXP or TXP Port Facility Loopback Circuit
Test the MXP or TXP Card, on page
17.
for the suspected bad card and replace it with a
for the suspected bad card and replace it with a known-good one.
Cisco NCS 2000 series Troubleshooting Guide, Release 11.0
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