Auto Qos 3650

[Joris Deprouw]

Hi All,

We have new 3650 switches with voice devices behind them. All devices mark their traffic with dscp ef.

I have configured the switchport like this. I have configured auto qos trusting dscp.

testswitch# sh run int gi 2/0/46
Building configuration...

Current configuration : 383 bytes
!
interface GigabitEthernet2/0/46
 ...
 auto qos trust dscp
 ...
 service-policy input AutoQos-4.0-Trust-Dscp-Input-Policy
 service-policy output AutoQos-4.0-Output-Policy
end

I'm sure that the device (Voice gateway) itself sends marked packets into the switch.

When I run the command sh policy-map interface x, I get a global output, but under the category "AutoQos-4.0-Output-Priority-Queue" I don't see anything. I would expect this counter to increase, since the switch should forward my received packets with the ef marking.

Can someone help me understand these counters?

Thanks,
Joris

sh policy map interface gi 2/0/46 output
 GigabitEthernet2/0/46

  Service-policy output: AutoQos-4.0-Output-Policy

    queue stats for all priority classes:
      Queueing
      priority level 1

      (total drops) 0
      (bytes output) 35020239095

    Class-map: AutoQos-4.0-Output-Priority-Queue (match-any)
      0 packets
      Match:  dscp cs4 (32) cs5 (40) ef (46)
        0 packets, 0 bytes
        5 minute rate 0 bps
      Match: cos  5
        0 packets, 0 bytes
        5 minute rate 0 bps
      Priority: 30% (30000 kbps), burst bytes 750000,

      Priority Level: 1

    Class-map: AutoQos-4.0-Output-Control-Mgmt-Queue (match-any)
      0 packets
      Match:  dscp cs2 (16) cs3 (24) cs6 (48) cs7 (56)
        0 packets, 0 bytes
        5 minute rate 0 bps
      Match: cos  3
        0 packets, 0 bytes
        5 minute rate 0 bps
      Queueing

      queue-limit dscp 16 percent 80
      queue-limit dscp 24 percent 90
      queue-limit dscp 48 percent 100
      queue-limit dscp 56 percent 100
      (total drops) 0
      (bytes output) 13421982966
      bandwidth remaining 10%

      queue-buffers ratio 10

    Class-map: AutoQos-4.0-Output-Multimedia-Conf-Queue (match-any)
      0 packets
      Match:  dscp af41 (34) af42 (36) af43 (38)
        0 packets, 0 bytes
        5 minute rate 0 bps
      Match: cos  4
        0 packets, 0 bytes
        5 minute rate 0 bps
      Queueing

      (total drops) 0
      (bytes output) 0
      bandwidth remaining 10%
      queue-buffers ratio 10

    Class-map: AutoQos-4.0-Output-Trans-Data-Queue (match-any)
      0 packets
      Match:  dscp af21 (18) af22 (20) af23 (22)
        0 packets, 0 bytes
        5 minute rate 0 bps
      Match: cos  2
        0 packets, 0 bytes
        5 minute rate 0 bps
      Queueing

      (total drops) 0
      (bytes output) 0
      bandwidth remaining 10%
      queue-buffers ratio 10

    Class-map: AutoQos-4.0-Output-Bulk-Data-Queue (match-any)
      0 packets
      Match:  dscp af11 (10) af12 (12) af13 (14)
        0 packets, 0 bytes
        5 minute rate 0 bps
      Match: cos  1
        0 packets, 0 bytes
        5 minute rate 0 bps
      Queueing

      (total drops) 0
      (bytes output) 0
      bandwidth remaining 4%
      queue-buffers ratio 10

    Class-map: AutoQos-4.0-Output-Scavenger-Queue (match-any)
      0 packets
      Match:  dscp cs1 (8)
        0 packets, 0 bytes
        5 minute rate 0 bps
      Queueing

      (total drops) 0
      (bytes output) 0
      bandwidth remaining 1%
      queue-buffers ratio 10

    Class-map: AutoQos-4.0-Output-Multimedia-Strm-Queue (match-any)
      0 packets
      Match:  dscp af31 (26) af32 (28) af33 (30)
        0 packets, 0 bytes
        5 minute rate 0 bps
      Queueing

      (total drops) 0
      (bytes output) 0
      bandwidth remaining 10%
      queue-buffers ratio 10

    Class-map: class-default (match-any)
      0 packets
      Match: any
      Queueing

      (total drops) 0
      (bytes output) 8878180175
      bandwidth remaining 25%
      queue-buffers ratio 25

[Jose Solano]

Hi,

The show policy-map command is not supported on the 3650 platform. The statistics shown should be ignored as they are not the right.

Please go through the following document for reference.

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3650/software/release/3se/qos/co
mmand_reference/b_qos_3se_3650_cr/b_qos_3se_3650_cr_chapter_010.html#wp336482906

Regards,

Jose

[Joris Deprouw]

Thanks Jose,

I don't see a lot of show commands in this document to check incoming packets for dscp values.

• show ap name service-policy
• show ap name dot11
• show class-map
• show wireless client calls
• show wireless client dot11
• show wireless client mac-address (Call Control)
• show wireless client mac-address (TCLAS)
• show wireless client voice diagnostics
• show policy-map
• show wlan

Does this mean that there is no way to check this?

Thanks,

Joris

[Jose Solano]

Hi Joris,

You can use the commands below to see the stats:

show platform qos queue config interface_type [interface_name]
show platform qos queue stats interface_type [interface_name]

Regards,

Jose

[Jack G]

I would assume the command is an issue with the 3850 too? I'm seeing similar after installing a 3850.

[dirk.wingert]

Which code version were you using on the 3850?