Rate limit - simulation

[learnsec]

hello,

i would like to do a bandwidth test for a certain application (http) in order to specify the required bandwidth needed on the internet link.

so i want to simulate an internet link for a 2 gbps to see the response time.

i would like to check if rate limit command on the interface of the router is enough?

interface fe1/1

rate-limit input 2000000000 375000000 750000000 conform-action transmit exceed-action drop

rate-limit output 2000000000 375000000 750000000 conform-action transmit exceed-action drop

best regards,

[cadet alain]

Hi,

as your rate-limit config is for all traffic you can just use an extended ping like this:

ping x.x.x.x rep 100000 size xx timeout 0

Regards.

Alain

[learnsec]

thanks cadet, but u didnt get my question,

i do ask about the configuration done on the interface is it enough?

and is the rate limit paramteres like maxim burst and normal burst, for a dedicated bandwidth of 2gbps as an internet link are ok?

interface fe1/1

rate-limit input 2000000000 375000000 750000000 conform-action transmit exceed-action drop

rate-limit output 2000000000 375000000 750000000 conform-action transmit exceed-action drop

so the above config do simulate exactly an internet link of 2 gbps or i do have to some additionals?

(concerning the type of traffic i dont have on my test enviroment else this application running  and it is over http)

[learnsec]

any assistance?

[cadet alain]

Hi,

you must aggregate links to get the 2 Gigs and the CAR policy will only limit the traffic but why limit it to the max bandwidth ? I don't really see the point of your experimentation ?

Regards.

Alain

[learnsec]

Thanks alain for ur reply,

But what do you mean by "you must aggregate link" ? the rate limit comand isnt enough?

My question is how to exactly simulate an internet link for speed 2 gbps!! Rate limit is enough?!

Sent from Cisco Technical Support iPad App

[Joseph W. Doherty]

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Posting

For a policer, if your actual 2 Gbps interface queue up to 40 packets, and assuming they don't exceed standard max Ethernet size, try setting your policer Bc to equal 40*1518(*8 - if Bc is in bits).  Be would be 0.