Indicates the status of policy-based forwarding (PBF) engine.
macAddrOk(1) indicates that the MAC address of the PBF engine
is set successfully and PBF engine is operational.
macAddrNotSet(2) indicates that the MAC address of the PBF
engine is not set and PBF engine is not operational.
msfcPresent(3) indicates that there is a Multiplayer Switch
Feature Card (MSFC) present in the device thus the PBF engine
is not operational.