: Configure LAN State Propagation
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Configure LAN State Propagation

Table of Contents

Configure LAN State Propagation

Let us learn to configure the LAN state propagation.
Where Can I Use This?What Do I Need?
  • Prisma SD-WAN
  • Active Prisma SD-WAN license
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. Select WorkflowsDevicesClaimed Devices, select the device you want to configure.
  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.