Constraints

This section describes how to configure constraints.

Creating a Manual-TE constraint

Before creating a Manual-TE constraint, you must create Manual-TE paths.

To create a Manual-TE constraint:

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

   The SD-WAN infrastructure management page is displayed. By default, the Network resources tab is selected, which displays the table of SD-WAN Controllers.

2. Click Management next to the SD-WAN Controller and in the drop-down list, select Configuration menu.

   This opens the SD-WAN 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. In the upper part of the page, click + Manual-TE constraint.
5. This opens a window; in that window, in the Name field, enter the name of the Manual-TE constraint.
6. Select the Use Manual-TE path check box next to the Manual-TE paths that you want to add to the constraint. By default, the check boxes are cleared and no paths are added to the constraint.
7. To allow an Auto-SPF path to be used when no Manual-TE paths are available, select the Ignore if no constrained path is found check box next to the relevant Manual-TE paths. The check box can be selected only for paths that have the Use Manual-TE path check box selected. By default, the check boxes are cleared and Auto-SPF cannot be used as an alternative for all paths.
8. Click Create.

The Manual-TE constraint is created and displayed in the table.

Now you can specify the Manual-TE constraint in transport service settings to add Manual-TE paths contained in the constraint to the transport service.

Editing a Manual-TE constraint

To edit a Manual-TE constraint:

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

   The SD-WAN infrastructure management page is displayed. By default, the Network resources tab is selected, which displays the table of SD-WAN Controllers.

2. Click Management next to the SD-WAN Controller and in the drop-down list, select Configuration menu.

   This opens the SD-WAN 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. Click Management next to the Manual-TE constraint and in the drop-down list, select Edit.
5. This opens a window; in that window, edit the settings that you want to change. For a description of the settings, see the instructions for creating a Manual-TE constraint.
6. Click Save.

Deleting a Manual-TE constraint

Deleted Manual-TE constraints cannot be restored.

To delete a Manual-TE constraint:

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

   The SD-WAN infrastructure management page is displayed. By default, the Network resources tab is selected, which displays the table of SD-WAN Controllers.

2. Click Management next to the SD-WAN Controller and in the drop-down list, select Configuration menu.

   This opens the SD-WAN 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. Click Management next to the Manual-TE constraint and in the drop-down list, select Delete.
5. In the confirmation window, click Delete.

The Manual-TE constraint is deleted and is no longer displayed in the table.

Creating a threshold constraint

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

To create a threshold constraint:

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

   The SD-WAN infrastructure management page is displayed. By default, the Network resources tab is selected, which displays the table of SD-WAN Controllers.

2. Click Management next to the SD-WAN Controller and in the drop-down list, select Configuration menu.

   This opens the SD-WAN 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 links 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 links.
8. If necessary, select the Ignore if no constrained path is found check box next to the monitoring indicators to let the constraint include links that have reached threshold values of these indicators in the Auto-TE path calculation when alternative links do not exist. The check box can be selected only for links 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 links 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.

Editing a threshold constraint

To edit a threshold constraint:

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

   The SD-WAN infrastructure management page is displayed. By default, the Network resources tab is selected, which displays the table of SD-WAN Controllers.

2. Click Management next to the SD-WAN Controller and in the drop-down list, select Configuration menu.

   This opens the SD-WAN 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. Click Management next to the threshold constraint and in the drop-down list, select Edit.
6. This opens a window; in that window, edit the settings that you want to change. For a description of the settings, see the instructions for creating a threshold constraint.
7. Click Save.

Deleting a threshold constraint

Deleted threshold constraints cannot be restored.

To delete a threshold constraint:

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

   The SD-WAN infrastructure management page is displayed. By default, the Network resources tab is selected, which displays the table of SD-WAN Controllers.

2. Click Management next to the SD-WAN Controller and in the drop-down list, select Configuration menu.

   This opens the SD-WAN 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. Click Management next to the threshold constraint and in the drop-down list, select Delete.
6. In the confirmation window, click Delete.

The threshold constraint is deleted and is no longer displayed in the table.