Create an SD-WAN Policy Pre Rule (REST API)

1. Create a path quality profile.
   A path quality profile identifies network quality or health requirements based on packet loss percentage, jitter, and latency. Once included in an SD-WAN policy rule, the path quality profile will control the threshold at which the firewall replaces a deteriorating path with a new path for matching application packets. A number of predefined path quality profiles exist, but you can create your own if none of the existing profiles meets your needs. The following POST request creates a path quality profile called general-business2.

   
   						curl -X POST
   							'https://<Panorama>/restapi/v9.1/objects/sdwanpathqualityprofiles?location=device-group&device-group=SD-WAN_Branch&name=general-business2'
   							-H 'X-PAN-KEY: <api key>
   							-d '{
       "entry": {
           "@name": "general-business2",
           "metric": {
               "jitter": {
                   "sensitivity": "medium",
                   "threshold": 20
               },
               "latency": {
                   "sensitivity": "medium",
                   "threshold": 300
               },
               "pkt-loss": {
                   "sensitivity": "medium",
                   "threshold": 5
               }
           }
       }
   }'
   					

2. Create a traffic distribution profile.
   Create a traffic distribution profile, which specifies how a firewall determines a new best path if the current preferred path exceeds a path quality threshold. A traffic distribution profile specifies one of three possible distribution methods: Best Available Path, Top-Down Priority, and Weighted Session Distribution. The profile also includes one or more link tags, which the distribution method uses to narrow its selection of a new path.

   The POST request below creates a traffic distribution profile that uses top-down priority and includes two link tags: Broadband-ISP and LTE-ISP. See Create a Tag (REST API) for an example of a REST API request to create a link tag.

   
   						curl -X POST
   							'https://<Panorama>/restapi/v9.1/objects/sdwantrafficdistributionprofiles?location=device-group&device-group=SD-WAN_Branch&name=BroadBand2'
   							-H 'X-PAN-KEY: <api key>
   							-d '{"entry": {"@name": "BroadBand2","traffic-distribution": "Top Down Priority","link-tags": {"entry": [
   							{"@name": "Broadband-ISP"
   							},
   							{"@name": "LTE-ISP",
   							}
   							]
   							}
   							}
   							}'
   						
   					

3. Create an SD-WAN policy pre rule.
   An SD-WAN policy pre rule specifies application(s) and/or service(s) and a traffic distribution profile to determine how a firewall selects the preferred path for an incoming packet that doesn’t belong to an existing session and that matches all other criteria. Examples of the criteria are source and destination zones, source and destination IP addresses, and source user. The SD-WAN policy pre rule also specifies a path quality profile of thresholds for packet loss, jitter, and latency. When one of the thresholds is exceeded, the firewall selects a new path for the application(s) and/or service(s).

   The POST request below creates an SD-WAN policy pre rule that Panorama will push to a device group called SD-WAN_Branch. The request body parameters include both a path quality profile and a traffic distribution profile. The parameters also include Trust-PA220 and Wireless-PA220 as the source zones and Untrust-PA220 as the destination zone. See Configure a Security Zone (REST API) for an example of a REST API request to create a zone.

   
   						curl -X POST
   							'https://<Panorama>/restapi/v9.1/policies/sdwanprerules?location=device-group&device-group=SD-WAN_Branch&name=HQ_Service_Test'
   							-H 'X-PAN-KEY: <api key>'
   							-d '{"entry": {"@name": "HQ_Service_Test","from": {"member": ["Trust-PA220”
   							]
   							},"to": {"member": ["Untrust-PA220"
   							]
   							},"source": {"member": ["any”
   							]
   							},"source-user": {"member": ["any"
   							]
   							},"destination": {"member": ["any"
   							]
   							},"application": {"member": ["ping"
   							]
   							},"service": {"member": ["any"
   							]
   							},"negate-source": "no","negate-destination": "no","disabled": "no","description": "For SD-WAN test","path-quality-profile": "general-business","action": {"traffic-distribution-profile": "BroadBand2"
   							}
   							}
   							}'