Wireless Access

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MVP
Posts: 3,020
Registered: ‎10-25-2011

Testing Air time

[ Edited ]

Does anyone  knows any easy program or tool to test the air time? with graphics to see before and after airtime configuration?

i would like to see it working not just configure it i would like to know its working as it should.

 

I mean on aruba network book there is a example of a graphic how was it before air time and after and i would like to do the same...

 

Anyone?

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Product Manager - Aruba Networks
Alternetworks Corp
Aruba Employee
Posts: 117
Registered: ‎09-21-2010

Re: Testing Air time

[ Edited ]

If you are talking about air time fairness a easy way to test is using tools like Chariot or the free iperf. Have a mix of a, g , and n clients. Now run high UDP or TCP traffic to each client and see the performance of airtime fairness by noting the thorughput achieved for each client. Run the test for all airtime fairness modes (default, fair and preferred access mode) and see how the thorughput to the a/g and n clients vary base on the airtime fairness mode. When you are testing in the 2.4GHz band have atleast one or two g clinet and two n clients. Similarly for 5GHz have atleast one or two a clinet and two n clients.

 

Note: It is best practice to test airtime fairness with UDP traffic type so that the test purely measures the AP's ability to shape traffic without taking other factors into account like TCP windowing, congestion control, etc. If the Fairness test cases use TCP traffic type the results might not be very accurate due to TCP parameters, which does not necessarily mean that the airtime fairness is not effective.

 

Regards,

Sathya

MVP
Posts: 3,020
Registered: ‎10-25-2011

Re: Testing Air time

Thanks man, ill get those tools

Any recomened number of computers? do i need like 30 computer or something like that?

Because to be honest i got like maybe 5 or 6 computers avalaible for the test, it would be a bit troublehsome getting more, but if its needed i guess ill ge them.

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Product Manager - Aruba Networks
Alternetworks Corp
Aruba Employee
Posts: 117
Registered: ‎09-21-2010

Re: Testing Air time

[ Edited ]

That is good enough. You don't need 30 computers to see how airtime fairness works. The important thing is to have  a couple clients as non-HT clients i.e. as only a or g clients. On windows machine you can easily do this (it may vary for diferrent wireless cards, this is for intel)

wireless nic.png

 

wireless nic 2.png

 

 

 

 


MVP
Posts: 3,020
Registered: ‎10-25-2011

Re: Testing Air time

sathya thank you very much...

It jus that i plan to create a lab in which i have all this set up so i can show the clients the different aspect of aruba and why they should buy aruba :)

And well this is something i wanted to show when im showing them a demo.

 

Kudos!

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Product Manager - Aruba Networks
Alternetworks Corp
dfc
Occasional Contributor II
Posts: 11
Registered: ‎01-11-2012

Re: Testing Air time

Why use A & G clients?  To test airtime, don't you want to see the max throughput that a transport can provide? The distinction would be which path can provide the fastest throughput.

Guru Elite
Posts: 21,587
Registered: ‎03-29-2007

Re: Testing Air time


dfc wrote:

Why use A & G clients?  To test airtime, don't you want to see the max throughput that a transport can provide? The distinction would be which path can provide the fastest throughput.


I think it was mentioned to ADD A and G clients to the mix that would already have 802.11n (HT) clients...

 



Colin Joseph
Aruba Customer Engineering

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