1-25
Cisco ONS 15600 SDH Troubleshooting Guide, R8.0
July 2010
Chapter 1 General Troubleshooting
1.2.6 Perform a Facility Loopback or Payload Loopback on a Destination-Node Optical Port
c.
Choose the appropriate state (
Unlocked
;
Locked,disabled
;
Locked,maintenance
;
Unlocked,automaticInservice
) 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 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 Optical Card” procedure on page 1-25
.
Test the Optical Card
Step 1
Complete the
“Replace an I/O Card” procedure on page 2-134
for the suspected bad STM-N or ASAP
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. See the procedures in the
“2.8.2 Protection Switching, Lock Initiation, and Clearing” section on page 2-123
. For more
information, refer to the “Maintain the Node” chapter of the
Cisco ONS 15600 SDH 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
“Replace an I/O Card” procedure on page 2-134
for the faulty card.
Step 5
Clear the loopback on the port:
a.
Click the
Maintenance > Loopback > Port
tabs (or
Maintenance > Optical > Loopback > Port
tabs).
b.
Choose
None
from the Loopback Type column for the port being tested.
c.
Choose the appropriate state (
Unlocked
;
Locked,disabled
;
Locked,maintenance
;
Unlocked,automaticInservice
) from the Admin State column for the port being tested.
d.
Click
Apply
.
e.
Click
Yes
in the confirmation dialog box.
Step 6
Clear the 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.
Summary of Contents for Cisco ONS 15600 SDH
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