You should configured all three QoS in the N5K - ingress, network, and queuing (egress).
I am assuming all your interfaces are trunk since you are matching COS on ingress. If your devices are not trunked (meaning host with access VLAN), your ingress match policy will not work.
Ingress:
class-map type qos Voice
match cos 5
class-map type qos Video
match cos 3
class-map type qos RT-Data
match cos 4
class-map type qos NRT-Data
match cos 1
policy-map type qos Queue-Map
class Voice
set qos-group 5
class Video
set qos-group 3
class RT-Data
set qos-group 4
class NRT-Data
set qos-group 1
system qos
service-policy type qos input Queue-Map
Network QoS:
class-map type network-qos Voice
match qos-group 5
class-map type network-qos Video
match qos-group 3
class-map type network-qos RT-Data
match qos-group 4
class-map type network-qos NRT-Data
match qos-group 1
policy-map type network-qos NQ
class type network-qos Voice
class type network-qos Video
class type network-qos RT-Data
class type network-qos NRT-Data
system qos
service-policy type network-qos NQ
Egress queuing:
class-map type queuing Voice
match qos-group 5
class-map type queuing Video
match qos-group 3
class-map type queuing RT-Data
match qos-group 4
class-map type queuing NRT-Data
match qos-group 1
policy-map type queuing 5k-qos-out
class type queuing class-default
bandwidth 64
class type queuing class-fcoe
bandwidth percent 1
class type queuing Voice
priority
class type queuing Video
bandwidth percent 10
class type queuing RT-Data
bandwidth percent 15
class type queuing NRT-Data
bandwidth percent 10
system qos
service-policy type queuing output 5k-qos-out
HTH,
jerry
