Configure LAN State Propagation

Let us learn to configure the LAN state propagation.
LAN state propagation allows propagating a LAN port's link state to its corresponding WAN port in a bypass pair. When LAN connectivity to a downstream switch is lost, the LAN port state is communicated to the upstream WAN device, thereby allowing traffic to take alternate paths through other Prisma SD-WAN LAN ports. LAN State Propagation is applicable only in the LAN-to-WAN direction. In effect, when a LAN port in a bypass pair goes down, it also brings down the corresponding WAN port of the bypass pair. However, in a failure with a WAN port, the LAN port will continue to remain up.
  1. Navigate to
    MAP
    Claimed Devices
    , select a device and from the ellipsis menu, select
    Configure the device
    .
  2. Select the
    Interfaces
    tab.
  3. Select a port that is configured as a
    Bypass Pair
    .
  4. For
    Propagate LAN State
    , select
    Yes
    .
  5. Save Bypass Pair
    .
    Thus, when a LAN port in a bypass pair goes down, it also brings down the corresponding WAN port of the bypass pair.

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