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