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PRP handling in NAT mode with virtual wire pair

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PRP (Parallel Redundancy Protocol) is supported in NAT mode for a virtual wire pair. This preserves the PRP RCT (redundancy control trailer) while the packet is processed by the FortiGate.

To configure PRP handling on a device in NAT mode:
  1. Enable PRP in the VDOM settings:
    (root) # config system settings
        set prp-trailer-action enable
    end
  2. Enable PRP in the NPU attributes:
    (global) # config system npu
        set prp-port-in "port15"
        set prp-port-out "port16"
    end
  3. Configure the virtual wire pair:
    (root) # config system virtual-wire-pair
        edit "test-vwp-1"
            set member "port15" "port16"
        next
    end

PRP (Parallel Redundancy Protocol) is supported in NAT mode for a virtual wire pair. This preserves the PRP RCT (redundancy control trailer) while the packet is processed by the FortiGate.

To configure PRP handling on a device in NAT mode:
  1. Enable PRP in the VDOM settings:
    (root) # config system settings
        set prp-trailer-action enable
    end
  2. Enable PRP in the NPU attributes:
    (global) # config system npu
        set prp-port-in "port15"
        set prp-port-out "port16"
    end
  3. Configure the virtual wire pair:
    (root) # config system virtual-wire-pair
        edit "test-vwp-1"
            set member "port15" "port16"
        next
    end