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Procedures for Optimizing Tunnel Paths

To switch to design mode, click on the “Design” button on the main menu bar as shown in Figure 270. The Design pull-down menu gets activated. To switch to Tunnel layer mode, select the “Tunnel Layer” button on the layer selection bar.

Figure 1: Switching to Design Mode, and Tunnel LayerSwitching to Design Mode, and Tunnel Layer

Before using the network grooming feature, you should change the tunnel path settings from “required” to “preferred” for those paths that you want to improve the routes of. To do this for all of your tunnels, select Design > Route Paths > Interactive Mode. From the console, select “Update Preferred Path Setting” for the following menu.

Preferred Path Modification Menu:

1. # Tunnel with Preferred Path setting= 0 primary, 0 secondary

2. # Tunnel with Required Path setting= 5 primary, 0 secondary

3. Use current routes as preferred/required paths


If any tunnels have the required setting, select 2. You will then be asked to apply changes to the primary tunnels, secondary/standby tunnels, or all. Select 3 for all.

Apply Changes to 1: Primary only, 2. Secondary/Standby only, 3. All


Required Paths Modification Menu:

1. Change to Preferred, 2. Remove All Required Paths, 3. No Change


Select 1 to change the paths to preferred paths. Press <Enter> repeatedly until you exit out of the console.


You can also manually apply the changes to tunnels on an individual basis by modifying the tunnel file, changing the Path Required PR(path) statements to Path Select PS(path) statements. You then need to use the File>Read option to read in these changes to the tunnel file.