user manual

18-115
Cisco ONS 15600 SDH Procedure Guide, R8.0
October 2007
Chapter 18 DLPs F300 to F399
DLP- F395 Change the STM-N Port ALS Maintenance Settings
DLP-F395 Change the STM-N Port 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 15600 SDH Reference Manual.
Step 1 In node view, double-click the STM-16, STM-64, or ASAP 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 18-9 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 and
deselect a check box. The provisionable parameters are listed in the options column in the table.
Step 4 Click Apply. If the change affects traffic, a warning message appears. Click Ye s to complete the change.
Purpose This task changes the automatic laser shutdown (ALS) maintenance
settings for the STM-N ports. This feature is available for STM-16,
STM-64, and ASAP cards.
Tools/Equipment None
Prerequisite Procedures DLP-F181 Log into CTC, page 16-34
Required/As Needed As needed
Onsite/Remote Onsite or remote
Security Level Provisioning or higher
Table 18-9 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 the
laser 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.