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Community Member

QoS in hardware

Hi All,

I currently have an issue whereby i have a 3750 access switch with IP phones connected (non-cisco) and i am unable to verify if the traffic is being classified and marked correctly as it appears it's happening in hardware.

This is the policy map i have configured under interfaces with IP phones connected

Policy Map IPT_IN
    Class mark_voice_in
      set dscp ef   

Class Map match-all mark_voice_in
   Match access-group name classify_voice_in

Extended IP access list classify_voice_in
    10 permit ip 10.136.51.0 0.0.0.255 any dscp ef

I want to verify that voice is being classed correctly and marked with EF, when I show the policy map under an access interface it appears as though nothing is being matched (even for class default), my assumption at this point is that this is being processed in hardware.

sh policy-map interface FastEthernet1/0/1
FastEthernet1/0/1

  Service-policy input: IPT_IN

    Class-map: mark_voice_in (match-all)
      0 packets, 0 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: access-group name classify_voice_in

    Class-map: class-default (match-any)
     0 packets, 0 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: any
        0 packets, 0 bytes
        5 minute rate 0 bps

Is there any other way i can verify that traffic is being classified correctly?

How can i check if this is being done in the switch hardware?

K

Everyone's tags (3)
1 ACCEPTED SOLUTION

Accepted Solutions
Cisco Employee

Re: QoS in hardware

Hi,

Use command "show mls qos interface x/x statistics".

HTH,

Lei Tian

1 REPLY
Cisco Employee

Re: QoS in hardware

Hi,

Use command "show mls qos interface x/x statistics".

HTH,

Lei Tian

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