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Cisco ONS 15454 SDH Procedure Guide, R7.2
October 2007
Chapter 19 DLPs D200 to D299
DLP- D216 Change the STM-N Card ALS Maintenance Settings
Step 4 Click Apply. If the change affects traffic, a warning message displays. Click Yes to complete the change.
Step 5 Return to your originating procedure (NTP).
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.
Recovery Pulse
Interval
Sets the recovery laser pulse
interval, in seconds. This is the
period of time that must past before
the recover pulse is repeated.
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.
Currently
Shutdown
(Display only) Displays the current
status of the laser.
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.
Request Laser
Restart
If checked, allows you to restart the
laser for maintenance.
Note Restarting a laser might be
traffic-affecting.
Checked or unchecked