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Cisco ONS 15454 SDH Procedure Guide, R7.0
78-17194-01
Chapter 19 DLPs D200 to D299
DLP- D216 Change the STM-N Card ALS Maintenance Settings
DLP-D216 Change the STM-N Card ALS Maintenance Settings
Note For the default values and domains of user-provisionable card settings, refer to the “Network Element
Defaults” appendix in the Cisco ONS 15454 SDH Reference Manual.
Step 1 In node view, double-click the STM-N card where you want to change the ALS maintenance settings.
Step 2 Click the Maintenance > ALS tabs.
Step 3 Modify any of the settings described in Table 19-2 by clicking in the field you want to modify. In some
fields you can choose an option from a drop-down list; in others you can type a value or select or deselect
a check box. The provisionable parameters are listed in the options column in the table.
Purpose This task changes the automatic laser shutdown (ALS) maintenance
settings for the STM-N cards. This feature is available for STM-64 and
MRC-12 cards.
Tools/Equipment None
Prerequisite Procedures DLP-D60 Log into CTC, page 17-49
Required/As Needed As needed
Onsite/Remote Onsite or remote
Security Level Provisioning or higher
Table 19-2 STM-N Maintenance Settings
Parameter Description Options
Port number (Display only) Port number —
ALS Mode Automatic laser shutdown mode.
ALS provides the ability to shut
down the TX laser when the RX
detects a loss of signal (LOS).
From the drop-down list, choose one of the
following:
• Disable—Deactivates ALS.
• Auto Restart—(Default) ALS is
active. The power is automatically shut
down when needed and automatically
tries to restart using a probe pulse until
the cause of the failure is repaired.
• Manual Restart—ALS is active, but
the laser must be manually restarted
when conditions that caused the outage
are resolved.
• Manual Restart for Test—Manually
restarts the laser for testing.
Recovery Pulse
Duration
Sets the recovery laser pulse
duration, in seconds, for the initial,
recovery optical power pulse
following a laser shutdown.
Numeric. For the default values and
domains of user-provisionable card
settings, refer to the “Network Element
Defaults” appendix in the Cisco ONS 15454
SDH Reference Manual.
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