Hello, I wanted to implement traffic shapiung features using catalyst 3750 running EMI IOS but I Am unable to gain decent results. First I tryed with the class-map and policy map applied to a L3 interface (no switchport). TRaffic shaping works but not as I expected. I picked 2 no switchport interfaces, I Assinged 2 IP numbers to them from 2 different nets and I enabled ip routing. then I simply used iperf or netperf to measure the bandwith and to measure if traffic shaping works. To have a rate limiting of 45Mbps over a 100Mbps interface I have to set a rate limit in the policy map of 90Mbit and I Can;t explain it. Perhaps I must change the dscp default values ? I can't figure out. I just did something like this: mls qos ! class-map match-all limit_ftp match access-group 101 ! ! policy-map limit_ftp class limit_ftp police 90000000 1000000 exceed-action drop and applied it to a access-list 101 but the shaping resule as i told is not what I Wanted. This method works with low band rates but not with high band rates, I don't know what I Am doing of wrong. I mean with bandwith shaping of 30 or 40 Mbit I got unexpected resules. I also tryed in a different way using a rate-limiting keyword on the interface properties: interface gigabit 1/0/11 rate-limit output access-group 100 1000000 187500 375000 conform-action transmit exceed-action drop it also does not work anyoen coudl help me showing me a working traffc shaping example? I read the online docs at cisco but htey did not help me. thanks very much Rick