1-14
Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
78-17235-01
Chapter 1 General Troubleshooting
1.3.1 Perform a Facility Loopback on a Source-Node OC-N Port
Create the Facility Loopback on the Source OC-N Port
Step 1
Connect an optical test set to the port you are testing.
Use appropriate cabling to attach the Tx and Rx terminals of the optical test set to the port you are
testing.
Step 2
Use CTC to create the facility loopback circuit on the port being tested:
a.
In node view, double-click the controller card (15310-CL-CTX or CTX2500) to display the card
view.
b.
Click the
Maintenance > Optical > Loopback > Port
tabs.
c.
Choose
OOS,MT
from the Admin State column for the port being tested.
d.
Choose
Facility
from the Loopback Type column for the port being tested.
e.
Click
Apply
.
f.
Click
Yes
in the confirmation dialog box.
Note
It is normal for a
1.7.158 LPBKFACILITY (OCN)
condition to appear during loopback
setup. The condition clears when you remove the loopback.
Step 3
Continue with the
“Test the Facility Loopback Circuit” procedure on page 1-14
.
Test the 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 a good circuit, no further testing is necessary with the facility loopback. Clear the
facility loopback:
g.
Click the
Maintenance > Optical > Loopback > Port
tabs.
h.
Choose
None
from the Loopback Type column for the port being tested.
i.
Choose the appropriate state (
IS,AINS
;
OOS,DSBLD
; or
OOS,MT
) from the Admin State column
for the port being tested.
j.
Click
Apply
.
k.
Click
Yes
in the confirmation dialog box.
l.
Continue with the
“1.3.2 Perform a Cross-Connect Loopback on the Source OC-N Port” procedure
on page 1-15
.
