Configure Layer 3 Subinterfaces for SD-WAN

Configure an SD-WAN Interface Profile for each ISP connection (subinterface) to define its link attributes.
Create a Layer 3 subinterface that uses a static IPv4 address.
Select

Network

Interfaces

Ethernet

and in the

Template

field select a template.

Select an interface.

For

Interface Type

, select

Layer3

and click

OK

.

Highlight the interface and click

Add Subinterface

at the bottom of the screen.

After the

Interface Name

and period, enter the subinterface number.

Enter a

Tag

for the subinterface (range is 1 to 4,094). For ease of use, make the tag the same number as the subinterface ID.

On the

IPv4

tab,

Enable SD-WAN

.

Select the

Type

of address:

Static

.

Add

the

IP

address and subnet mask.

Enter the IP address of the

Next Hop Gateway

.

Click

OK

.


Create a Layer 3 subinterface that uses a static IPv6 address.
Perform the first six substeps of the step to create a Layer 3 subinterface that uses a static IPv4 address, because they are the same for an IPv6 address.
On the
IPv6
tab,
Enable IPv6 on the interface
and
Enable SD-WAN
.
In the
EUI-64 (default 64-bit Extended Unique Identifier)
field, enter the 64-bit EUI in hexadecimal format. If you leave this field blank, the firewall uses the EUI-64 generated from the MAC address of the physical interface. If you enable the
Use interface ID as host portion
option when adding an address, the firewall uses the Interface ID as the host portion of that address.
Select the
Type
of address:
Static
.
Select
Address Assignment
.

Add
an IPv6
Address
for the interface or select
New Variable
to create the variable. SD-WAN supports one IPv6 address per physical interface.
Enable address on interface
.

Use interface ID as host portion
—.See the third substep above for explanation.
Anycast
—Select to make the IPv6 address (route) an Anycast address (route), which means multiple locations can advertise the same prefix, and IPv6 sends the anycast traffic to the node it considers the nearest, based on routing protocol costs and other factors.
Next Hop Gateway
—Enter the IPv6 address of the Next Hop Gateway (the next hop from the IPv6 address you entered). The Next Hop Gateway must be on the same subnet as the IPv6 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.
Send Router Advertisement
—Select to enable the firewall to send this address in Router Advertisements (RAs), in which case you must also enable the global
Enable Router Advertisement
option for the interface (on the
Router Advertisement
tab).
Valid Lifetime (sec)
—Enter the valid lifetime (in seconds) that the firewall considers the address valid. The valid lifetime must equal or exceed the
Preferred Lifetime (sec)
(default is 2,592,000).
Preferred Lifetime (sec)
—Enter the preferred lifetime (in seconds) that the valid address is preferred, which means the firewall can use it to send and receive traffic. After the preferred lifetime expires, the firewall can't use the address to establish new connections, but any existing connections are valid until the valid lifetime expires (default is 604,800).
On-link
—Select if systems that have addresses within the prefix are reachable without a router.
Autonomous
—Select if systems can independently create an IP address by combining the advertised prefix with an Interface ID.
Click
OK
.
As an alternative to a static address, create a Layer 3 subinterface that uses DHCP to get its IPv4 address.
Select

Network

Interfaces

Ethernet

and in the

Template

field, select a template stack (not a template).

Select an interface.

For

Interface Type

, select

Layer3

and click

OK

.

Highlight the interface and click

Add Subinterfaces

at the bottom of the screen.

Highlight the subinterface and click

Override

.

Highlight the subinterface and after the

Interface Name

and period, enter the subinterface number.

Enter a

Tag

for the subinterface (range is 1 to 4,094). For ease of use, make the tag the same number as the subinterface ID.

On the

IPv4

tab,

Enable SD-WAN

.

Select

Type

of address:

DHCP Client

and

Enable

.

Uncheck (do not select)

Automatically create default route pointing to default gateway provided by server

.

Select the

Advanced

tab and then the

DDNS

tab.

Select

Settings

and

Enable

. The

Hostname

is automatically generated by the Panorama SD-WAN plugin.

Select the

Vendor

as

Palo Alto Networks DDNS

.

Click

OK

.


Apply an SD-WAN Interface Profile to the subinterface.
Highlight the subinterface you created and select the
SD-WAN
tab.
Select the
SD-WAN Interface Profile
you created for this link or create a new profile.
Click
OK
.
Repeat the prior steps to add more subinterfaces to the interface.
Commit
.