QoS in 2060X counters

[gsancassano]

Hi,

I have enable QoS in an access swtich.

By default all the ports are in untrusted state and I have configure the uplink (Te1/1) as trust and enable the priority queue.

The question is why the DSCP counters of the outgoing traffic in the uplink port increase? All the ports are untrusted, so all the DSCP marks in the incoming traffic of the access port will be mark down to DSCP 0, and the counters of the outgoing traffic in the uplink port should not increase.

Any idea?

Could be traffic generated by the swtich that is mark?

Switch#sh mls qos interface Te1/1 statistics | begin outgoing
TenGigabitEthernet1/1 (All statistics are in packets)

  dscp: outgoing
-------------------------------

  0 -  4 :     4958093            3            0            0            0
  5 -  9 :             0                  0            0           15            0
 10 - 14 :        1389              0            0            0            0
 15 - 19 :           0                  0            0            0            0
 20 - 24 :           0                  0            0            0            0
 25 - 29 :           0       135485            0            0            0
 30 - 34 :           0                 0             0            0            0
 35 - 39 :           0                 0             0            0            0
 40 - 44 :           3                 0            0            0            0
 45 - 49 :           0       569772            0       332627     0
 50 - 54 :           0                 0             0            0            0
 55 - 59 :           0                 0             0             0            0
 60 - 64 :           0                 0             0            0

Thanks in advance.

[Akash Agrawal]

Hi,

Please check once if mls qos is globally enabled or not. If it is not, switch will take any qos action and forward frame as it is.

Regards,

Akash

[gsancassano]

Hi,

I check and "mls qos" is enable, all acces port are untrusted and only de uplink port is configure us trust and with priority queue.

I don't know why increase the output DSCP counters in the uplink port.

Switch#sh mls qos interface Te1/1 statistics | begin outgoing
TenGigabitEthernet1/1 (All statistics are in packets)

  dscp: outgoing
-------------------------------

  0 -  4 :     4958093            3            0            0            0
  5 -  9 :             0                  0            0           15            0
 10 - 14 :        1389              0            0            0            0
 15 - 19 :           0                  0            0            0            0
 20 - 24 :           0                  0            0            0            0
 25 - 29 :           0       135485            0            0            0
 30 - 34 :           0                 0             0            0            0
 35 - 39 :           0                 0             0            0            0
 40 - 44 :           3                 0            0            0            0
 45 - 49 :           0       569772            0       332627     0
 50 - 54 :           0                 0             0            0            0
 55 - 59 :           0                 0             0             0            0
 60 - 64 :           0                 0             0            0

thanks.