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policing on 6K

I want to limit the rate of a port , in RJ45 card, from 100MB to any rate i want.

But it does not work, here is my configuration :

say i want to limit the port 3/25 to 1M, with the burst 13.

set qos policer aggregate 1MB_rate rate 1000 burst 13 policed-dscp drop

set qos acl ip_flow dscp 0 aggregate 1MB_rate any

commit qos acl all

set qos map ip_flow 3/25

what is the problem in this ?

any advice will be appreciated.


Re: policing on 6K

Have you set you port QoS to be port based and not VLAN based.. the sh port Qos will be able to tell you..


Re: policing on 6K

I was playing with your config and it worked okay...

Using traffic generators and some Mcast streams the following was visible..

sh qos policer run all

Warning: Runtime information may differ from user configured setting due to hardware


QoS microflow policers:

QoS aggregate policers:

Aggregate name Avg. rate (kbps) Burst size (kb) Exceed action

------------------------------- ---------------- --------------- -------------

udp_1mbps 992 13 drop

ACL attached



This was associated to the following ACL:

sh qos acl info run all

set qos acl IP udp_qos_port


1. dscp 0 aggregate udp_1mbps udp any any

Then attached to the port (Trunk port):

sh port qos 1/1

QoS is enabled for the switch.

QoS policy source for the switch set to local.

Port Interface Type Interface Type Policy Source Policy Source

config runtime config runtime

----- -------------- -------------- ------------- -------------

1/1 port-based port-based COPS local

Port TxPort Type RxPort Type Trust Type Trust Type Def CoS Def CoS

config runtime config runtime

----- ------------ ------------ ------------ ------------- ------- -------

1/1 1p2q2t 1p1q4t untrusted untrusted 0 0

(*)Runtime trust type set to untrusted.


Port ACL name Type

----- -------------------------------- ----

1/1 udp_qos_port IP


Port ACL name Type

----- -------------------------------- ----

1/1 udp_qos_port IP

On a trunk configured for port-based QoS, traffic in all VLANs received through the port is compared to any named ACLs attached to the port.

The following was the outcome when generating a stream of traffic towards the switch:

sh qos stati l3

Packets dropped due to policing: 14767

IP packets with ToS changed: 88025

IP packets with CoS changed: 0

Non-IP packets with CoS changed: 0

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