PCP + PFC + ECN configuration Example

Global Setup:

dcbx enable

 !

 interface vlan 55

  vlan-name vSAN

  no shutdown

  mtu 9216

 !

 wred wred_ecn

  random-detect color green minimum-threshold 1000 maximum-threshold 2000 drop-probability 100

  random-detect color yellow minimum-threshold 500 maximum-threshold 1000 drop-probability 100

  random-detect color red minimum-threshold 100 maximum-threshold 500 drop-probability 100

  random-detect ecn

 !

 class-map type network-qos pfcdot1p3

  match qos-group 3

  pfc-cos 3

 !

 class-map type queuing Q0

  match queue 0

 !

 class-map type queuing Q3

  match queue 3

 !

 qos-map traffic-class 2Q

  queue 0 qos-group 0-2,4-7

  queue 3 qos-group 3

 !

 policy-map type network-qos policy_pfcdot1p3

  !

  class pfcdot1p3

   pause

   pfc-cos 3

 !

 policy-map type queuing policy_2Q

  !

  class Q0

   bandwidth percent 30

  !

  class Q3

   bandwidth percent 70

   random-detect wred_ecn

 !

 system qos

  trust-map dot1p default

 !

Host Port Facing:

  description vSRN

  no shutdown

  switchport mode trunk

  switchport access vlan 1

  switchport trunk allowed vlan 55-60

  mtu 9216

  flowcontrol receive off

  flowcontrol transmit off

  priority-flow-control mode on

  service-policy input type network-qos policy_pfcdot1p3

  service-policy output type queuing policy_2Q

  ets mode on

  qos-map traffic-class 2Q

  spanning-tree port type edge

  dcbx version ieee

Here it's an example of setup for VLTi interface (if you setup a OS 10 VLT setup):

  description VLTi

  no shutdown

  no switchport

  mtu 9216

  flowcontrol receive off

  flowcontrol transmit off

  priority-flow-control mode on

  service-policy input type network-qos policy_pfcdot1p3

  service-policy output type queuing policy_2Q

  ets mode on

  qos-map traffic-class 2Q

  dcbx version ieee