This is what the Cisco 3560 Qos Reference Guide has to say on the
matter:<http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_20_se/configuration/guide/swqos.html>

"Note
Do not use the show policy-map interfaceprivileged EXEC command to display
classification information for incoming traffic. The interface keyword is
not supported, and the statistics shown in the display should be ignored."

As has been said, the inbound Qos based service-policy limitation and  the
failure of the "*show policy-map interface*"  command to reflect stats on
the Cat 3560 are normal behaviour. I have also observed this on the Cat
3550. I use the *sh mls qos interface xx statistics* command instead

I also use the *mls qos monitor dscp *xx xx xx xx xx xx    interface
command to spice up the output.

PC_3550(config-if)#mls qos monitor ?
  bytes    Collect byte statistics
  dscp     Collect DSCP statistics
  packets  Collect packet statistics


On 4 March 2012 00:49, Adam Booth <[email protected]> wrote:

> Hi Ken,
>
> It's a limitation on the Catalyst switch platforms - the policy is probably
> working as desired, however you cant obtain the information that it is
> behaving that way.
>
> Try "show mls qos interface fa1/0/1 statistics"
>
> Cheers,
> Adam
>
> On Sun, Mar 4, 2012 at 7:01 AM, Ken Wyan <[email protected]> wrote:
>
> >  I have following scenario (Tested in Proctorlabs Rack).
> >
> > HQ Switch  Fa1/0/1 (trunk port) <-----------connect to---------->  HQ
> > Router Fa0/0 (with sub-interfaces)
> >
> > I want to apply a service-policy to mgcp packets  going through this
> link.
> >
> > I configured access-list , class-map , policy-map & applied to switch
> > interface. But I can't see any mgcp packets matching
> >
> > HQ-3750#show policy-map interface fastEthernet 1/0/1
> >  FastEthernet1/0/1
> >  Service-policy input: mgcp
> >    Class-map: mgcp (match-all)
> >      0 packets, 0 bytes
> >      5 minute offered rate 0 bps, drop rate 0 bps
> >      Match: access-group 100
> >    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
> > interface FastEthernet1/0/1
> >  switchport trunk encapsulation dot1q
> >  switchport trunk native vlan 10
> >  switchport mode trunk
> >  speed 100
> >  duplex full
> >  mls qos trust dscp
> >  service-policy input mgcp
> >
> > *Now  same thing I configured on HQ Router ( Fa0/0 interface)  , then I
> can
> > see packets are matching with service policy.*
> >
> > What can be the reason?
> > (Switch accepts service-policy in input direction only , hence I applied
> > service-policy in output direction on Router port)
> >
> > Can this be a limitation for trunk (multi-vlan) ports on switches ?
> >
> > Ken
> > _______________________________________________
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>
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-- 
Olugbenga Oyebande
MD, DAIT
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