Cisco Catalyst 3550 Optical L3 switch rate limiting

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Apr 15th, 2009
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Hi All,

I have cisco cisco 3550 catalyst switch where rate-limit commands is not recognized.So I need to rate-limit to certain port for 11Mbps bandwidth.I tried but couldn't so ,If anyone has some idea??

Currelty client is hitting 13mbps where it should be only 11mbps..

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shivathapa Wed, 04/15/2009 - 20:16
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I already tried police command for restricting but could not for 11mbps link.

class-map match-any websurfer-out

match ip dscp default

class-map match-any websurfer-in

match access-group 101



policy-map 11mb-websurfer-in

class websurfer-in

police 11000000 512750 exceed-action drop

policy-map 11mb-websurfer-out

class websurfer-out

police 11000000 512750 exceed-action drop

this is what I have configured.

Its not working,

Plz help me out

Laurent Aubert Thu, 04/16/2009 - 11:30
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  • Cisco Employee,


Did you check your classification is working correctly ?

How is the trust state of your ingress interface. If they are in untrusted mode, you need to match DSCP 0 instead of default.

Here is an example:

mls qos


class-map match-all data1

match access-group 145

class-map match-all data2

match ip dscp 0



policy-map EGRESS

class data2

police 11000000 512750 exceed-action drop

policy-map INGRESS

class data1

police 11000000 512750 exceed-action drop



interface FastEthernet0/x


service-policy input INGRESS

service-policy output EGRESS


access-list 145 permit ip any any



shivathapa Thu, 04/16/2009 - 20:20
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Is it necessary to match ip dscp 0?? what will this command do ? and what meas trust state or untrusted state?

Thanx in advance.


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