Cisco ONS 15454 Troubleshooting Manual page 291

Chapter 2 Alarm Troubleshooting
Clear the FAILTOSWR Condition in a BLSR Configuration
Perform the Exercise Ring command on the reporting card:
Step 1
a.
b.
c.
If the condition does not clear, from the view menu, choose Go to Network View.
Step 2
Look for alarms on OC-N cards that make up the ring or span and troubleshoot these alarms.
Step 3
Step 4 If clearing other alarms does not clear the FAILTOSWR condition, log into the near-end node.
Step 5 Click the Maintenance > BLSR tabs.
Step 6 Record the OC-N cards listed under West Line and East Line. Ensure that these OC-N cards and ports
are active and in service:
a.
b.
c.
d.
e.
If the OC-N cards are active and in service, verify fiber continuity to the ports on the recorded cards. To
Step 7
verify fiber continuity, follow site practices.
Step 8 If fiber continuity to the ports is good, use an optical test set to verify that a valid signal exists on the
line. For specific procedures to use the test set equipment, consult the manufacturer. Test the line as close
to the receiving card as possible.
Using an optical test set disrupts service on the OC-N card. It could be necessary to manually switch
Caution
traffic carrying circuits over to a protection path. Refer to the
Initiation, and Clearing" section on page 2-262
If the signal is valid, clean the fiber according to site practice. If no site practice exists, complete the
Step 9
procedure in the "Maintain the Node" chapter in the Cisco ONS 15454 Procedure Guide.
If cleaning the fiber does not clear the condition, verify that the power level of the optical signal is within
Step 10
the OC-N card receiver specifications. The
on page 1-146
Repeat Steps
Step 11
If the optical power level for all OC-N cards is within specifications, complete the
Step 12
a Traffic Card" procedure on page 2-273
November 2009
Click the Maintenance > BLSR tabs.
Click the row of the affected ring under the West Switch column.
Select Exercise Ring in the drop-down list.
Verify the LED status: A green ACT/SBY LED indicates an active card. An amber ACT/SBY LED
indicates a standby card.
Double-click the card in CTC to open the card view.
Click the Provisioning > Line tabs.
Verify that the Admin State column lists the port as IS.
If the Admin State column lists the port as OOS,MT or OOS,DSBLD, click the column and choose
IS. Click Apply.
If a port in the IS admin state does not receive a signal, the LOS alarm is raised and the port
Note
service state transitions to OOS-AU,FLT.
lists these specifications.
7 through 10 for any other ports on the card.
"2.9.2 Protection Switching, Lock
for commonly used switching procedures.
"1.12.3 OC-N Card Transmit and Receive Levels" section
for the protect standby OC-N card.
Cisco ONS 15454 Troubleshooting Guide, R8.5
2.7.104 FAILTOSWR
"Physically Replace
2-97