Configure a Physical Ethernet Interface for SD-WAN

1. Log in to the Panorama Web Interface.
2. Select NetworkInterfacesEthernet, select the appropriate template from the Template context drop-down, select a slot number, such as Slot1, and select an interface (for example, ethernet1/1).
3. Select the Interface Type as Layer3.
4. Select a Virtual Router or create a new Virtual Router.
5. Assign the Security Zone that is appropriate for the interface you’re configuring.
   For example, if you are creating an uplink to an ISP, you must know that the Ethernet interface you chose is going to an untrusted zone.
6. On the IPv4 tab, Enable SD-WAN.
7. Select Type of address:
   • Static—In the IP field, Add an IPv4 address and prefix length for the interface. You can use a defined variable, such as $uplink, with a range of addresses. Note that you can only add an IPv4 address or a defined variable and not an address object for the IP field. Enter the fully qualified IPv4 address of the Next Hop Gateway (the next hop from the IPv4 address you just entered). The Next Hop Gateway must be on the same subnet as the IPv4 address. The Next Hop Gateway is the IP address of the ISP’s default router that the ISP gave you when you bought the service. It is the next hop IP address to which the firewall sends traffic to reach the ISP’s network, and ultimately, the internet and the hub.
   • (PAN-OS 9.1.2 and later 9.1 releases, and SD-WAN Plugin 1.0.2 and later 1.0 releases) PPPoE—Enable PPPoE authentication for DSL links, enter the Username and Password, and Confirm Password.
   • DHCP Client—It is critical that DHCP assigns a default gateway, also known as the next hop gateway for the ISP connection. The ISP will provide all the necessary connectivity information, such as dynamic IP address, DNS servers, and the default gateway.
     Although DHCP Client is supported for a hub or branch interface, on a hub interface it is preferable for you to assign a Static address instead of DHCP Client. Using DHCP on a hub requires the Palo Alto Networks DDNS service. Using a Static address at the hub site creates a more stable environment because DDNS is not involved to resolve the DHCP IP address changes, and because the DDNS service can take a few minutes to register the new IP address when it changes. If you have multiple branch sites connecting to a hub site, having stability is critical to keeping the network up and running.
     If you select DHCP Client, be sure to disable the option Automatically create default route pointing to default gateway provided by server, which is enabled by default.

8. On the SD-WAN tab, select an SD-WAN Interface Profile that you already created (or create a new SD-WAN Interface Profile) to apply to this interface. The SD-WAN Interface Profile has an associated link tag, so the interfaces where this profile is applied will have the associated link tag. An interface can have only one link tag.
9. Click OK to save the Ethernet interface.

10. Commit and Commit and Push your configuration changes.
11. (SD-WAN manual configuration only) Configure a Virtual SD-WAN Interface. Auto VPN configuration will perform this task if you are using Auto VPN.