Ok, I have a 3550. Its running EMI code: c3550-i5q3l2-mz.121-8.EA1c.bin I'm trying to apply some kind of rate-limit for one of my customers to stop them killing our bandwidth. The switch is operating purely as a Layer 2 device, so no routing or anything clever. So far, from poking around in various places, I have come up with the following: ! mls qos ! class-map match-any any match any ! ! policy-map 64kbps class any police 64000 64000 exceed-action drop ! ........ interface FastEthernet0/24 switchport access vlan 5 switchport mode access no ip address duplex full speed 100 service-policy input 64kbps service-policy output 64kbps no cdp enable .... But...it doesn't do anything! 'show mls qos int fa0/24 stat' gives the following: FastEthernet0/24 Ingress dscp: incoming no_change classified policed dropped (in bytes) Others: 900750579 841373 899909206 0 0 Egress dscp: incoming no_change classified policed dropped (in bytes) Others: 1110768778 n/a n/a 0 0 Which is nice, except 'dropped' shouldn't be zero, I would have thought! :) I can still transfer data at full speed in both directions. Any assistance gratefully recieved! Cheers, Mat