: Configure Internet Circuit Underlay Link Aggregation
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Configure Internet Circuit Underlay Link Aggregation

Table of Contents

Configure Internet Circuit Underlay Link Aggregation

To configure Internet Underlay Link Quality in the LQ tab.
Where Can I Use This?What Do I Need?
  • Prisma SD-WAN
  • Active Prisma SD-WAN license
Prisma SD-WAN supports Link Quality Monitoring (LQM) based path selection for all path types, including underlay, VPN, and Standard VPN; from ION device release 5.6.1. The ION device aggregates the overlay LQM values between branches and at least one or more data centers to compute the final LQM value for the internet underlay circuit or other required paths. By default, Use LQM for Non Hub Paths is disabled but can be enabled at the circuit or circuit category. To enable at the circuit level:
  1. On the Prisma SD-WAN web interface, go to ManageSites, and select a site from the list of sites.
  2. For a site, click ConfigurationsInternet CircuitsChange Circuits.
  3. Click Edit to view circuit information.
  4. In the LQM Configurations:
    • To enable LQ Monitoring for ongoing links quality measurements, such as latency, loss, and jitter select Yes. LQM is enabled by default on branch to data center paths.
    • Select one or more Data Centers to be the basis for Link Quality metrics for the internet underlay.
      If nothing is selected, by default, all data centers are chosen.
    • Select Yes from the Use LQM for Non Hub Paths for Link Quality metrics for the internet underlay.
    • From the Aggregation list, choose Minimum (lowest value of selected data centers), or Maximum (highest value of selected data centers), or Average (average value of selected data centers). By default, minimum will be selected.
    The Summary in Link Quality charts display minimum, maximum, or average link-level metrics based on selecting data centers and the aggregation method. The details are also displayed on the main Dashboard tab.
    The Aggregation list does not display if you select a single data center.
  5. Optionally, the setting is also controlled at the Circuit Category level (recommended). Please see for instructions on editing a circuit category.