The precedence used to select one rule over potentially
multiple rules that might match an L3/L4 flow. The rule
with highest precedence takes precedence over any rule
that specifies a matching flow, individual physical input
port, a VLAN or any incoming implicit 802.1p traffic class
rule.
Any attempt to write a rule that indicates a non-default value
for this object together with an individual port value for
extremeQosRuleInPort will be rejected by the agent.