Understanding QOS on Nexus N2K-C2248TP-1GE

[dave cooper]

I am trying to understand how the QOS settings are passed from the 5K to a N2K-C2248TP-1GE

When I look at the queues I see the following

Ethernet10/1/21 queuing information:

  Input buffer allocation:

  Qos-group: 0  2  4  5  (shared)

  frh: 2

  drop-type: no-drop

  cos: 0 1 2 3 4 5 6

  xon       xoff      buffer-size

  ---------+---------+-----------

  73728     106496    286720 

Queueing:
  queue    qos-group    cos            priority  bandwidth mtu
  --------+------------+--------------+---------+---------+----
  2                0            0 2 3 6      WRR        10      9728
  4                2            1               WRR        20      9728
  6                4            4               WRR        10      9728
  7                5            5               PRI             0      9728
 

Where does it get the bandwidth allocation from and how do I change it.?

In my QOS section on the 5K I have this

  priority
  class type queuing class-queueing-gold
    bandwidth percent 10
  class type queuing class-fcoe
    bandwidth percent 30
  class type queuing class-queueing-silver
    bandwidth percent 30
  class type queuing class-queueing-bronze
    bandwidth percent 20
  class type queuing class-default
    bandwidth percent 10
 

I cannot find any real information on the QOS for the N2Ks so any help is appreciated

[Reza Sharifi]

The QOS config applies to the parent switch (5k, 7k , etc..) and not the 2k.

Here is document on 5k QOS config you can take a look at:

http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5500/sw/qos/6x/b_5500_QoS_Config_6x/b_5500_QoS_Config_602N12_chapter_01010.html

HTH