Configuration Guide for Cisco Optical Site Manager, IOS XR Release 26.x.x

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Configuration Guide for Cisco Optical Site Manager, IOS XR Release 26.x.x

Submarine Line Terminating Equipment mode

Updated: October 14, 2026

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This section explains submarine Line Terminating Equipment mode in Cisco Optical Site Manager. It describes key behavior, requirements, and operational context so you can understand when to use the feature.

The NCS 1010 optical line system supports SLTE mode configuration through Cisco Optical Site Manager, enhancing compatibility and control for subsea deployments.

SLTE configuration in Cisco Optical Site Manager

Cisco Optical Site Manager allows you to configure these parameters for SLTE mode, streamlining subsea system management and optimization.

  • Manual ASE loading: Controls ASE source injection for channels.

  • ASE attenuation setpoint: Sets attenuation level for ASE channels.

  • OXC restoration soak time: Defines restoration timing after failures.

  • ASE guard band: Configures protection bandwidth for ASE.

Enable or disable submarine mode

The Submarine Mode toggle button, located in the Optical Degrees panel, allows you to enable or disable Submarine Line Terminal Equipment (SLTE) parameters.

  • Enabling Submarine Mode disables Link Power Control, Gain Estimator, and Link Tuner, sets static-ASE-disable, and shuts down OSC ports.

  • Disabling Submarine Mode enables Link Power Control, Gain Estimator, and Link Tuner, activates OSC ports, and removes static-ASE-disable from XR.

The Manual Ase loading parameter in the interface panel (under OLT-C > Amplifier) is directly linked to the Submarine Mode toggle. If Manual Ase loading is enabled from the interface panel, the Submarine Mode button will show as enabled, and vice versa.

Activating Submarine Mode can disrupt network traffic if it is not performed by an optical expert. When you activate Submarine Mode, the system displays a confirmation message that lists the functionalities disabled by this change.

Before you begin

Procedure

  1. Click Optical Setup in the left panel, then click the Optical Configuration tab.

  2. Expand Optical Degrees section, then click the Edit button.

  3. Locate the desired optical degree in the table.

  4. Under the Submarine Mode column, toggle the button to either enable or disable the mode.

    A confirmation dialog box appears, warning that activating submarine mode will disable functionalities such as Link Power Control, Gain Estimator, and Link Tuner.

  5. Click Yes to enable submarine mode, or No to cancel the operation.

  6. Under the Optical Cross Connections tab, select signal from the Power Source column for the optical degree.

  7. (Optional) Follow these steps to initiate manual ASE loading:

    1. Open the OLT-C card from the topology view.
    2. Expand the Alarms tab at the bottom of the screen. Next, select the OCM tab.
    3. Click the Manual Attenuation Tuning button.
      The Attenuation Tuning window appears.
    4. Click a channel in the graph and set the values for Optical Attenuation and Ase Attenuation.
    5. Click Continue.
      The system processes and applies the configuration. This may take a few minutes.

The system applies the selected Submarine Mode setting and automatically adjusts the associated network parameters.