Test The Facility Loopback Circuit - Cisco ONS 15310-CL Troubleshooting Manual

Chapter 1 General Troubleshooting
Step 3 Use CTC to create the facility loopback on the port being tested:
a.
b.
c.
d.
e.
Note
Continue with the
Step 4
Test the Facility Loopback
If the test set is not already sending traffic, send test-set traffic on the loopback circuit.
Step 1
Examine the traffic received by the test set. Look for errors or any other signal information that the test
Step 2
set is capable of indicating.
Step 3 If the test set indicates a good circuit, complete the following steps:
a.
b.
c.
d.
e.
If the test set indicates a faulty circuit, the problem might be a faulty card, faulty port, or faulty cabling
Step 4
from the electrical port. Continue with the
78-17235-01
In node view, double-click the card where you are performing the loopback, then click the
appropriate tab:
Maintenance > DS1 > Loopback
•
• Maintenance > DS3 > Loopback
Maintenance > EC1 > Loopback
•
Choose OOS,MT from the Admin State column for the port being tested.
Choose Facility from the Loopback Type column for the port being tested.
Click Apply.
Click Yes in the confirmation dialog box.
It is normal for a facility loopback
1.7.157 LPBKFACILITY (EC1)
clears when you remove the loopback.
"Test the Facility Loopback" procedure on page
Double-click the electrical card, then click the appropriate tab:
Maintenance > DS1 > Loopback
•
Maintenance > DS3 > Loopback
•
Maintenance > EC1 > Loopback
•
Choose None from the Loopback Type column for the port being tested.
Choose the appropriate state (IS,AINS; OOS,DSBLD; or OOS,MT) from the Admin State column
for the port being tested.
Click Apply.
Click Yes in the confirmation dialog box.
1.2.1 Perform a Facility Loopback on a Source-Node Port
1.7.156 LPBKFACILITY (DS1, DS3)
condition to appear during loopback setup. The condition
"Test the Electrical Cabling" procedure on page
Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
or
1-5.
1-6.
1-5