Creating a threshold constraint

To create a threshold constraint:

  1. In the menu, go to the Infrastructure section.

    This opens the resource management page. By default, the Network resources tab is selected, which displays the table of controllers.

  2. Click Management → Configuration menu next to the controller.

    This opens the controller configuration menu. By default, you are taken to the Controller nodes section, which displays a table of controller nodes.

  3. Go to the Constraints section.

    The Manual-TE tab with the table of Manual-TE constraints is selected by default.

  4. Select the Thresholds tab.

    A table of threshold constraints is displayed.

  5. In the upper part of the page, click + Threshold constraint.
  6. This opens a window; in that window, in the Name field, enter the name of the threshold constraint.
  7. Select the Don't use links with threshold reached check box next to link monitoring indicators to have the threshold constraint exclude links that have reached the threshold value of these monitoring indicators from the Auto-TE path calculation. This check box is cleared by default.
  8. If you do not want the threshold constraint to exclude links with reached thresholds from Auto-TE path calculation when alternative links do not exist, select the Ignore if no constrained path is found check box next to the monitoring values. This check box is cleared by default. You can only select the check box next to monitoring values that have the Don't use links with threshold reached check box selected.

    For example, if you have selected the Don't use links with threshold reached check box next to the Error level monitoring value, the threshold constraint excludes a link on which the errors-per-second threshold is reached from Auto-TE path calculation. If you have also selected the Ignore if no constrained path is found check box and all links have reached the errors per second threshold, the threshold constraint does not exclude the link from the Auto-TE path calculation.

  9. Click Create.

The threshold constraint is created and displayed in the table.

You can specify a threshold constraint when creating or editing a transport service to make the transport service use this threshold constraint.

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