Configuring the Class of Service Bit
FortiGate units can now configure the value of the Class of Service (CoS) bit, also called Priority Code Point (PCP).
The value of CoS in forward direction (fwd) and reverse direction (rev) is set in the policy/policy6 table using the CLI. The value can be set either as 255, to allow passthrough, or given a priority between 0 and 7.
Syntax
config firewall {policy | policy6}
set vlan-cos-fwd <int>
set vlan-cos-rev <int>
end