Open a scenario; see To open a scenario. An IGP topology is displayed on the map.

To create a scenario, see To create a scenario.

Click on the MPLS model icon and choose one or more LSPs.

Open the properties form for each of the selected LSPs, click on the Properties tab and configure the Measured Bandwidth parameter.

The Measured Bandwidth parameter is auto-populated when your scenario uses imported LSPs that are enabled for statistics collection. Use the auto-populated values if required.

Click Impact Analysis. The Legend-SIMULATION-IGP Model-Scenario form opens and displays the Last Impact Results tab. Close or move the Legend form.

Select the MPLS Link Utilization Colors check box. The colors on the map change to colors that correspond to link utilization values.

Link utilization is expressed as a percentage of the total capacity of the link.

Click on the Colors tab of the Legend form to see the utilization values that correspond to the colors. To open the Legends form again, click on the Legend icon.

White indicates a multi-utilization link, meaning that utilization values are different in one direction than the other.

To see utilization values for multi-utilization links, right-click on a white-colored link and choose Expand Group. The map shows links in both directions, each with a color that shows its utilization.

Select a link on the map to view the properties form for the link. The Utilization parameter displays link utilization as a percentage.

You can modify the Link Bandwidth parameter to simulate the impact of various link capacities.

To change measured bandwidth values for LSPs:

1. Click on the MPLS Model icon and choose Simulated LSP from the object drop-down.

2. Choose the required LSP. The Simulated LSP properties form opens.

3. Click on the Properties tab and configure the Measured bandwidth tab.

Click Impact Analysis to run the simulation.

You must select the MPLS Link-utilization Colors check box each time you run a new impact analysis simulation.

End of steps