1-34
Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
78-17235-01
Chapter 1 General Troubleshooting
1.6.3 Perform a Facility Loopback on an Intermediate-Node OC-N Port
Note
It is normal for the
“LPBKFACILITY (OCN)” condition on page 1-104
. The condition
clears when you remove the loopback.
Step 6
Complete the
“Test and Clear the OC-N Facility Loopback Circuit” procedure on page 1-34
.
Test and Clear the OC-N 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 from the port:
a.
Double-click the 15310-CL-CTX or CTX2500 card and click the
Maintenance > Optical >
Loopback > Port
tabs.
b.
Choose
None
from the Loopback Type column for the port being tested.
c.
Choose the appropriate state (IS; OOS,DSBLD; OOS,MT) from the Admin State column for the port
being tested.
d.
Click
Apply
.
e.
Click
Yes
in the confirmation dialog box.
Step 4
Clear the facility loopback circuit:
a.
Click the
Circuits
tab.
b.
Choose the loopback circuit being tested.
c.
Click
Delete
.
d.
Click
Yes
in the Delete Circuits dialog box. Do not check any check boxes.
Step 5
Complete the
“Test the OC-N (Controller) Card” procedure on page 1-34
.
Test the OC-N (Controller) Card
Step 1
Complete the
“Physically Replace a Card” procedure on page 1-155
for the suspected bad card and
replace it with a known-good one.
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
“1.10.1 Protection Switching, Lock Initiation, and Clearing” section on page 1-148
. For more
information, refer to the “Maintain the Node” chapter in the
Cisco ONS 15310-CL and
Cisco ONS 15310-MA Procedure Guide
.
Step 2
Resend test traffic on the loopback circuit with a known-good card installed.
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