Clear "inc. OCN/STMN" conditions/alarms

Procedure 5-36: Clear "inc. OCN/STMN" conditions/alarms

Overview

This procedure is used to clear the following inc. OCN/STMN alarms:

inc. OCN line AIS
inc. OCN LOF
inc. OCN LOS
inc. OCN sig. degrade (BER)
inc. OCN sig. failed (BER)
inc. STMN LOF
inc. STMN LOS
inc. STMN MS-AIS
inc. STMN sig. degrade (BER)
inc. STMN sig. failed (BER)

Before you begin

Prior to performing this procedure:

Refer to Before you begin and Required equipment in this chapter.
Refer to Laser safety and Electrostatic discharge in Chapter 1, Safety.

Steps

Complete the following steps to clear inc. OCN/STMN alarms.

From the WaveStar^® CIT System View, click the Alarm List button and locate the inc. OCN/STMN alarm in the resulting alarm list.

Determine the alarm level(s) for the active inc. OCN/STMN alarm(s). Clear the alarms in order of severity.

Refer to the Probable Cause column in the alarm list, determine the affected OC-N/STM-N line, and note the corresponding AID.

Visually check the local receive fiber connections between the circuit pack faceplate/pluggable transmission module and the LGX panel or equivalent connection point for faulty connections or damage.

If faulty connections or damage...	Then...
was found,	Follow local procedures to repair/replace as necessary. Then continue with Step 5.
was not found,	Proceed to Step 7.

From the System View, click the Alarm List button and click Refresh.

Is the inc. OCN/STMN alarm still present?

If...	Then...
Yes	Continue with Step 7.
No	STOP! End of Procedure.

NOTICE

Service-disruption hazard

Disconnecting cables and/or replacing pluggable transmission modules may disrupt service.

Before taking action, determine the extent of service disruption caused by disconnecting cables or replacing a pluggable transmission module. Then, perform the action(s) deemed appropriate in light of the traffic being carried and the nature of the failure.

Replace the affected local pluggable transmission module.

Reference:

Procedure 6-6: Replace pluggable transmission module

From the System View, click the Alarm List button and click Refresh.

Is the inc. OCN/STMN alarm still present?

If...	Then...
Yes	Remove the replacement pluggable transmission module and return the original pluggable transmission module to the socket, then continue with Step 10.
No	STOP! End of Procedure.

NOTICE

Service-disruption hazard

Disconnecting cables and/or replacing circuit packs may disrupt service.

Before taking action, determine the extent of service disruption caused by disconnecting cables or replacing a circuit pack. Then, perform the action(s) deemed appropriate in light of the traffic being carried and the nature of the failure.

Replace the affected local circuit pack.

Reference:

Procedure 6-4: Replace VLNC5x SONET/SDH transport circuit pack

From the System View, click the Alarm List button and click Refresh.

Is the inc. OCN/STMN alarm still present?

If...	Then...
Yes	Remove the replacement OC-N/STM-N OLIU circuit pack and return the original circuit pack to the slot, then continue with Step 13.
No	STOP! End of Procedure.

Important!

At this point, the local network element is operating correctly. The trouble is in the far-end network element or in the fiber/cable between the far-end network element and the local network element.

Follow local procedures for addressing OCN/STMN-related conditions/alarms at the far-end network element.

From the System View at the local network element, click the Alarm List button and click Refresh.

Is the inc. OCN/STMN alarm still present?

If...	Then...
Yes	Continue with Step 16.
No	STOP! End of Procedure.

Follow local procedures to isolate and clear the fiber/cable trouble between the far-end network element and the local network element.

End of steps