Minimize Metered LTE Usage

Modify the LTE circuit settings to minimize metered usage.
Select

Workflows

Sites

Select a site

Internet Circuits

Change Circuits

(Metered 3G/4G/LTE Circuit Category) Circuit

Edit

.

Minimize traffic over the LTE circuit.

Clear
BW Monitoring.
Clear
LQ Monitoring
.
Select the BFD Mode.
For devices running versions 5.3.x or earlier versions, select
Non-aggressive
as the BFD Mode because these versions do not support VPN keep-alives.
For devices running 5.4.1 or later versions, select
Override VPN Keep-Alive
and set the
Keep-Alive Interval
to
600,000 ms
.
Set
Cost
to
129
to lower the preference for the circuit.
Select
No
for
Controller Connections
to exclude this circuit from connecting to the controller for device-related services.
Select
No
for
App Reachability Probes
to exclude this circuit from checking the reachability of an application for a given path.


Modify the circuit category settings to minimize metered LTE usage.
Select
Manage
Resources
Circuit Categories
.
Edit the
Metered 3G/4G/LTE
circuit category.
You can select any circuit category to modify for minimizing metered LTE usage but use the
metered 3G/4G/LTE
circuit category for optimum settings.
In less common cases, you can use metered private links. For example, metered LTE links can be terminated into a private network versus the public internet. In this case, you can use a
Private
circuit category instead of a
Public
circuit category.
Clear the
Use For Controller Connections
check box to minimize the amount of data sent over that path to the controller.
Clear the
Use For Application Reachability Probes
check box to reduce the amount of non-user application traffic over metered circuits.
This should ONLY be done if this circuit category is referenced as an L3 failure path in the path policy rule, as this will effectively ensure that the ION device does not react to layer 7 failures for application flows on this circuit.
Set the
Keep-Alive Interval
to
600,000 ms
.
Configure a path policy rule to minimize metered LTE usage.
Select
Manage
Policies
Path
Path Stacks
Advanced
Path Sets
Select a Set
Add Rule/Edit Rule
.
On the
Paths
tab, select
Metered 3G/4G/LTE
as the
Circuit Category
under
L3 Failure Paths
.
This is applicable for devices running versions 5.2.1 or higher.
For devices running versions 5.2.1 or earlier and have traffic going through a
Prisma SD-WAN
VPN across a metered link, set the
Backup Overlay
to VPN and the
Circuit Category
to
Metered 3G/4G/LTE Internet
in the path policy rule.
Verify the policy configuration.
Path policies control application session forwarding behavior at a site level. Path policies can specify broad actions as well as specific actions per application. This can include specific paths defined as Active, Backup, or L3 Failure Paths in the policy.
Review paths configured in policy rules.
Active Paths—These should include very specific circuit category definitions. For example, for traffic intended to traverse a VPN across an Internet DSL link, the active path overlay should be VPN and the circuit category should be Internet DSL.
Backup Paths—These should include very specific Circuit Category definitions. In many cases, it may be desirable to limit Backup Path usage only for critical applications. This is determined on a case-by-case basis as this can vary by vertical and the primary line of business at the location. For these cases, the use of Advanced Stacked Policies is recommended. This will allow for hierarchical policy inheritance with exceptions where needed by the business.
L3 Failure Paths—For ION devices running versions 5.2.1 and higher, the L3 Failure Paths are built for Metered LTE circuits.
Review the path policy set stacks bound to a site.
Select
Manage
Policies
Bindings
to view the path policy set stack bound to a site. The path policy set stacks and the order of the policy sets in the stack are bound to a site.