Creating a threshold constraint

Before creating a threshold constraint, you must enable monitoring on tunnels.

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 SD-WAN and SDN Controllers.

2. Click Management → Configuration menu next to the SD-WAN 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.

   A table of Manual-TE constraints is displayed.

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 Do not use tunnels with threshold reached check box next to monitoring indicators to have the threshold constraint exclude tunnels that have reached the threshold value of these indicators from the Auto-TE path calculation. By default, the Do not use tunnels with threshold reached check box is cleared and no monitoring indicators are used to exclude tunnels.
8. If necessary, select the Ignore if no constrained path is found check box next to the monitoring indicators to let the constraint include tunnels that have reached threshold values of these indicators in the Auto-TE path calculation when alternative tunnels do not exist. The check box can be selected only for tunnels that have the Do not use tunnels with threshold reached check box selected.

   By default, the Ignore if no constrained path is found check box is cleared and the constraint excludes all tunnels that have reached the threshold values of the selected monitoring indicators from the Auto-TE path calculation.

9. Click Create.

The constraint is created and displayed in the table.

You can specify the constraint in transport service settings to use it for automatic calculation of the path.