Configure Internet Circuit Underlay Link Quality Aggregation

To configure Internet Underlay Link Quality in the LQ tab.
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, select to
    Map
    Sites
    , and select a site from the list of sites.
  2. For a site, click
    Configurations
    Internet Circuits
    Change 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 link-level metrics 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 Configure Circuit Categories for instructions on editing a circuit category.

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