Minimize Metered LTE Usage
You can configure Prisma SD-WAN to minimize the use of metered backup links and leverage the use of LTE links when other active paths are not available. Use the following workflow for ensuring flexibility and agility at a lower cost by sending data over metered links for business continuity only when the primary connection is unavailable.
- Modify the LTE circuit settings to minimize metered usage.
- Select.MapSitesSelect a siteInternet CircuitsChange Circuits(Metered 3G/4G/LTE Circuit Category) CircuitEdit
- Minimize traffic over the LTE circuit.
- ClearBW Monitoring.
- ClearLQ Monitoring.
- Select the BFD Mode.
- For devices running versions 5.3.x or earlier versions, selectNon-aggressiveas the BFD Mode because these versions do not support VPN keep-alives.
- For devices running 5.4.1 or later versions, selectOverride VPN Keep-Aliveand set theKeep-Alive Intervalto600,000 ms.
- SetCostto129to lower the preference for the circuit.
- SelectNoforController Connectionsto exclude this circuit from connecting to the controller for device-related services.
- SelectNoforApp Reachability Probesto 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.PoliciesStacked PoliciesCircuit Categories
- Edit theMetered 3G/4G/LTEcircuit category.You can select any circuit category to modify for minimizing metered LTE usage but use themetered 3G/4G/LTEcircuit 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 aPrivatecircuit category instead of aPubliccircuit category.
- Clear theUse For Controller Connectionscheck box to minimize the amount of data sent over that path to the controller.
- Clear theUse For Application Reachability Probescheck 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 theKeep-Alive Intervalto600,000 ms.
- Configure a path policy rule to minimize metered LTE usage.
- Select.PoliciesStacked PoliciesPolicy SetPolicy RuleCreate Rule/Edit Rule
- On thePathstab, selectMetered 3G/4G/LTEas theCircuit CategoryunderL3 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 theBackup Overlayto VPN and theCircuit CategorytoMetered 3G/4G/LTE Internetin 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.
- Review the path policy set stacks bound to a site.Selectto 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.PoliciesStacked PoliciesBindings
Recommended For You
Recommended videos not found.