I have qos in 4 router cisco connected by metroethernet, and i have one firewall connected in the same metroethernet.
The config in router cisco is:
policy-map QoS
class Trafico-Voz-Out
priority 1000
set cos 5
class Signaling-Voz-Out
bandwidth 96
set cos 3
class class-default
fair-queue
random-detect
policy-map QoS-Metro
class class-default
shape average 6000000
service-policy QoS
I can implementate QOS in firewall fortigate, and work without problem, or i need install another router beteween router and firewall, and connected the router direct to metroethernet with qos. What you recommend?.