Specifies the action that the edge device should take if asked
to apply an invalid or unknown policy.
applyDefaultPolicy(1) - Ignore the result and search for
the next policy assignment rule.
dropPackets(2) - Block traffic.
forwardPackets(3) - Forward traffic, as if no policy
had been assigned (via 802.1D/Q
rules).
Although dropPackets(2) is the most secure option, it may
not always be desirable.