Creating the router object that will apply constraints for VoIP traffic

In Configuration > Objects > Network objects:

1. Click on Add.
   
   This opens a window to create and edit objects.
2. In the menu on the left, select Router.

General properties

3. Name the object (e.g., SD-WAN_VoIP).

Monitoring

4. For the Detection method, select ICMP.
5. Adjust the Timeout (s) as needed.
6. Adjust the Interval (s) as needed.
7. Adjust the number of Failures before degradation (3 by default).

SD-WAN SLA (thresholds)

8. Select SD-WAN SLA (thresholds).
9. Adjust the Latency (ms) as needed.
10. Adjust the Jitter (ms) as needed.
11. Adjust the Packet loss rate (%) as needed.
12. Do not enter an Unavailability rate (%).

Gateways

13. In the Gateways used tab, click on Add.
14. In the Gateway column, select the object LIL-WAN-1.
15. In the Device(s) for testing availability column, select Test the gateway directly.
16. Repeat steps 15 to 17 to add the object LIL-WAN-2.
17. In the Backup gateways tab, click on Add.
18. In the Gateway column, select the object LIL-WAN-3.
19. In the Device(s) for testing availability column, select Test the gateway directly.

Advanced properties

20. In Advanced properties, select Load balancing No load balancing.
21. For Enable backup gateways, select When all gateways cannot be reached.
22. Click on Apply then Save.