Configure Circuits

Learn about how to configure circuits in Prisma SD-WAN.
Circuits consist of circuit categories which are used in policy rules to identify paths allowed for an application. By default, there are a few pre-defined circuit categories in the system that you can use when configuring circuits.
When configuring circuits, use the optimum parameters for the circuit based on the circuit category. For example, when using metered circuit categories in circuits, ensure that you minimize metered LTE usage.
To add and edit an internet circuit perform the following steps:
  1. To configure an internet circuit, select
    Add Circuits
    .
  2. Select a circuit and the internet service provider from the drop-down to
    Edit
    .
  3. Add a name and
    (optional)
    description for the circuit.
  4. Enter the
    LINK DOWN
    and
    LINK UP
    speed.
  5. For Bandwidth (BW) Configuration, leave the default as manual.
  6. (Optional)
    Enable
    BW Monitoring
    if you would like ongoing measurement of link capacity.
    BW Monitoring is enabled by default.
  7. (Optional)
    Select
    Yes
    for
    QoS
    to enable shaping and queuing of traffic as defined in your application policy rules.
  8. (Optional)
    Select the setting for
    Use for Application Reachability Probes
    .
  9. (Optional)
    Enable
    LQ Monitoring
    if you would like ongoing measurement of link quality, such as latency, loss, and jitter.
    LQM is enabled by default on branch to data center paths.
  10. For Bidirectional Forwarding Detection (BFD) Mode, select
    Aggressive
    or
    Non-aggressive
    and for devices on version 5.4.1 and later set the VPN Keep Alive Failure Count and VPN Keep Alive timeout Interval.
    • Aggressive—Choose aggressive for fast failure detection of links. This mode is the default mode and is recommended by Prisma SD-WAN.
    • Non-aggressive—Choose non-aggressive when you want to reduce the amount of probe traffic, or for links that are subjected to high loss or poor quality.
  11. Retain the default cost and click
    Done
    .
    By default, the Cost for a circuit is 128; a value lower than 128 indicates a lower circuit cost, making the circuit a preferred choice.
  12. Click
    Add Circuits
    to add a Private WAN Circuit and select a circuit category from the drop-down.
  13. Edit
    the Private WAN Circuit.
  14. Edit the circuit information of the private WAN and
    Save
    your edits.
  15. Add and edit any new circuits and
    Save
    .
  16. Click
    Next
    to navigate to the
    Summary
    tab to verify the displayed information and then
    Save & Exit
    .

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