Cisco ONS 15600 SDH Troubleshooting Manual page 217

Chapter 2 Alarm Troubleshooting
If the
Step 2
procedure on page
Step 3 If the alarm does not clear on the reporting node, verify the physical connections between the cards and
that the fiber-optic cables are configured to carry RS-DCC traffic. If they are not, correct them. For more
information about STM-N fiber connections and terminations, refer to the "Install Cards and Fiber-Optic
Cable" chapter in the Cisco ONS 15600 SDH Procedure Guide. For more information about OSCM fiber
connections and terminations, refer to the Cisco ONS 15454 DWDM Troubleshooting Guide.
Always use the supplied electrostatic discharge wristband when working with a powered
Caution
ONS 15600 SDH. Plug the wristband cable into the ESD jack located lower-right edge of the shelf
assembly.
If the physical connections are correct and configured to carry DCC traffic, ensure that both ends of the
fiber span have unlocked ports. Verify that the ACT/SBY LED on each card is green.
When the LEDs on the cards are correctly illuminated, complete the
Step 4
Terminations" procedure on page 2-139
of the fiber span.
Repeat
Step 5
If DCC is provisioned for the ends of the span, verify that the port is active and in service by completing
Step 6
the following steps:
Confirm that the card shows a green LED in CTC or on the physical card.
a.
A green ACT/SBY LED indicates an active card. An amber ACT/SBY LED indicates a standby card.
To determine whether the port is in service, double-click the card in CTC to display the card view.
b.
For an STM-N card, click the Provisioning > Line tabs. For the OSCM card, click the
c.
Provisioning > STM-1 Line tabs.
Verify that the Admin State column lists the port as Locked.
d.
If the Admin State column lists the port as Locked,maintenance or Locked,disabled, click the
e.
column and click Locked from the drop-down list. Click Apply.
Note
For all nodes, if the card is in service, use an optical test set to determine whether signal failures are
Step 7
present on fiber terminations. For specific procedures to use the test set equipment, consult the
manufacturer.
Using an optical test set disrupts service on an STM-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 2-123
If no signal failures exist on terminations, measure power levels to verify that the budget loss is within
Step 8
the parameters of the receiver. See the
on page 1-74
for DWDM card levels.
July 2010
"LOF (STMN)" condition on page 2-82
2-83.
Step 4 at the adjacent nodes.
If a port in the unlocked admin state does not receive a signal, the LOS alarm is raised and
the port service state transitions to Locked-disabled, automaticInService & failed.
for non-DWDM card levels and refer to the Cisco ONS 15454 DWDM Reference Manual
is reported, complete the
to verify that the DCC is provisioned for the ports at both ends
"2.8.2 Protection Switching, Lock
for commonly used switching procedures.
"1.9.3 Optical Traffic Card Transmit and Receive Levels" section
Cisco ONS 15600 SDH Troubleshooting Guide, R8.0
2.6.172 RS-EOC
"Clear the LOF (STMN) Alarm"
"2.8.5 Verify or Create Node DCC
2-109