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ECN marking on cisco nexus 3064 not working

I have a requirement to enable IP ECN marking on CIsco nexus 3064 switch.

ECT(0) traffic is being switched.

 

Tried the following configs, but couldnt achieve marking.

n# sh policy-map type network-qos nq_pm_1

  Type network-qos policy-maps

  ===============================

  policy-map type network-qos nq_pm_1

    class type network-qos nq_cm_1

 

      mtu 1500

      congestion-control random-detect ecn

    class type network-qos class-default

 

      mtu 1500

     congestion-control random-detect ecn

 

n# sh run | beg "system qos"

system qos

  service-policy type qos input iscsi

  service-policy type network-qos nq_pm_1

 

 

n# sh policy-map type queuing pqu

  Type queuing policy-maps

  ========================

  policy-map type queuing pqu

    class type queuing cqu

      random-detect minimum-threshold 10 packets maximum-threshold 350 packets

      bandwidth percent 50

    class type queuing class-default

      bandwidth percent 50

      random-detect minimum-threshold 5 packets maximum-threshold 5 packets

 

n# sh run int e1/21

!Command: show running-config interface Ethernet1/21

!Time: Tue Apr 29 09:04:35 2014

version 5.0(3)U5(1b)

interface Ethernet1/21

  no switchport

  service-policy type queuing output pqu

  ip address 15.0.20.1/24

 

 

What could be missing?

 

 

Thanks

Jose.

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1 REPLY
Community Member

Jose --Can you send this cmd

Jose --


Can you send this cmd output? See below where class 3 shows 1 for ECN, meaning it's turned on.

 

switch# show platform software qd info global
System info:
cos2class-id[7-0]      :  0 0 0 0  0 0 0 0
cls|flag|mtuS|cosM|grpM|wred|ecn
  0|0x05|9216|0xff|0x01| 0| 0
  1|0x00|9216|0x00|0x00| 0| 0
  2|0x00|9216|0x00|0x00| 0| 0
  3|0x09|9216|0x00|0x08| 1| 1
  4|0x00|9216|0x00|0x00| 0| 0
  5|0x00|9216|0x00|0x00| 0| 0
  6|0x00|9216|0x00|0x00| 0| 0
  7|0x00|9216|0x00|0x00| 0| 0

 

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