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