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New Member

rate-limit not working

I am bit confused that how rate limit works,Below is my config ,  I want to limit the traffic on Fa0/0 intreface comming from 50.50.50.50/32 to 100.100.100.100/32 to 2 MB if traffic exceeds it should drop.Pls help to solve.

interface FastEthernet0/0

ip address 10.10.10.1 255.255.255.252

rate-limit output access-group 101 2000000 25000 50000 conform-action transmit exceed-action drop

rate-limit input access-group 101 2000000 25000 50000 conform-action transmit exceed-action drop

duplex auto

speed auto

end

access-list 101 permit ip host 50.50.50.50 host 100.100.100.100 log

  • WAN Routing and Switching
4 REPLIES
Gold

rate-limit not working

Hi,

is CEF enabled on ur device? whats ur chasis?

and one more question, in which direction are you expecting 50.50.50.50 to come in? you setup ONE source for both input and output !

Hope it Helps,

Soroush.

Hope it Helps, Soroush.
New Member

rate-limit not working

Thanks Soroush,

This is im tring on Dynamips(3745) but i want to do it in live productioin with cisco-1841.

I have tried after disabling CEF & removing input rate limit but no luck.

My first confusion is in rate limit syntax as i want to put the CAR for specific IP address to 2 MB with burst size of 2.5 MB , it should transmit the packet if it reaches to 2.25 MB & it should drop if it reaches to 2.5 MB thus pls chk my below syntax if it is correct.

rate-limit output access-group 101 2000000 25000 50000 conform-action transmit exceed-action drop

Re: rate-limit not working

Hi chetan,

where is the full policy?

This i believe to be a good starti point:

http://www.cisco.com/en/US/docs/ios/12_0/qos/configuration/guide/qccar.html

and this:

http://www.cisco.com/en/US/docs/ios/11_1/feature/guide/CAR.html

I would probably check again your ACL.

HTH

Alessio

New Member

rate-limit not working

Thanks Alessio,

I am not using any policing and shapping for traffic but I just want to put CAR to 2 mb on ip 50.50.50.50 while accessing data from server 100.100.100.100.

Thus I am tring to configure rate limit.

SO kindly help to understand what is averge rate, normal burst & exceeed burst if i want to put CAR of 2 mb to 2.5 mb.

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