[c-nsp] Nexus 3064 QoS

[BASSAGET Cédric]

Hello,
I'm trying to make QoS work on a NX3064. I'm not able to make it work in
the simpliest lab ever... Can anybody tell me what's wrong ?

I need to prioritize DSCP EF marked trafic from host B to host A.

Host B (192.168.41.2) <-> NX eth1/48 vlan 41
Host A (192.168.41.1) <-> NX eth1/24 vlan 41

Host B is 1Gb/s
Host A is 100Mb/s

show run :

class-map type qos match-all qos-match-prio
  match dscp 46
class-map type queuing qos-queue-prio
  match qos-group 1

policy-map type qos qos-match-trafic
  class qos-match-prio
    set qos-group 1
  class class-default
policy-map type queuing qos-queue-trafic
  class type queuing qos-queue-prio
    priority
  class type queuing class-default
    shape kbps 50000

interface Ethernet1/24
  switchport mode trunk
  switchport trunk allowed vlan 41
  speed 100
  duplex full
  bandwidth 100000
  service-policy type queuing output qos-queue-trafic
interface Ethernet1/48
  switchport mode trunk
  switchport trunk allowed vlan 41
  service-policy type qos input qos-match-trafic


Using iperf from host B to host A (udp, bandwidth = 110Mb/s), I get 50 mb/s
of trafic on host A. Normal.

Trying to ping from host B to host A : ping -Q 0xB8 192.168.41.1 : about
50% loss. Here's my problem.

show policy-map on ingress interface show that my icmp trafic is classified
and attached to qos-group 1 :

N3K-eqx-pa3-1# show policy-map interface ethernet 1/48 type qos

Global statistics status :   enabled
Global QoS policy statistics status :   enabled

Ethernet1/48

  Service-policy (qos) input:   qos-match-trafic
    SNMP Policy Index:  285213088

    Class-map (qos):   qos-match-prio (match-all)

     Slot 1
        6845 packets
     Aggregate forwarded :
        6845 packets
      Match: dscp 46
      set qos-group 1

    Class-map (qos):   class-default (match-any)

     Slot 1
        12776799 packets
     Aggregate forwarded :
        12776799 packets
      Match: any
        12776799 packets
      set qos-group 0


N3K-eqx-pa3-1# show policy-map interface ethernet 1/24 type queuing

Global statistics status :   enabled
Global QoS policy statistics status :   enabled

Ethernet1/24

  Service-policy (queuing) input:   default-in-policy
    SNMP Policy Index:  301990027

    Class-map (queuing):   class-default (match-any)
      bandwidth percent 100
      queue dropped pkts : 0
      queue depth in bytes : 0

  Service-policy (queuing) output:   qos-queue-trafic
    SNMP Policy Index:  301990282

    Class-map (queuing):   qos-queue-prio (match-any)
      priority level 1
      queue dropped pkts : 0
      queue depth in bytes : 0

    Class-map (queuing):   class-default (match-any)
      bandwidth percent 100
      shape kbps 50000  min 0
      queue dropped pkts : 0
      queue depth in bytes : 0

I don't see any stats here ...

Thanks for your help.
Regards