1-40
Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
78-17235-01
Chapter 1 General Troubleshooting
1.6.5 Perform a Facility Loopback on a Destination-Node Ethernet Port
g.
Click
Yes
in the confirmation dialog box.
Step 6
Complete the
“Test and Clear the Ethernet Facility Loopback Circuit” procedure on page 1-40
.
Test and Clear the Ethernet 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 CE100T-8 card and click the
Maintenance > Loopback
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 Ethernet Card” procedure on page 1-40
.
Test the Ethernet 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.
Step 3
If the test set indicates a good circuit, 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).
Step 4
Complete the
“Physically Replace a Card” procedure on page 1-155
for the faulty card.
