Downloading stops when change the working channel/band!!!

Amr Al-Hamad amr.alhamad
Fri Dec 2 09:40:04 PST 2011

Thank you Jouni so much for your reply.
First of all I am so sorry for not being clear in my previous message.
????? My problem is when I try to change the band of my router (from 5GHz which is considered a less congestion band but with
a small-area coverage to 2.4 GHz band where there is a high congestion but a larger coverage area) through the GUI of my 
router(, all the downloading processes stop. I asked some people about this issue and they told me that when I
change the band of my router, the card needs to reauthenticates and reassociates itself to the new band so I lost the connection 
to my network for several seconds and therefore the downloading process stops although if I do not connect to a new network 
(actually when I change the band I will work on the same network and SSID).

?????????? I read that wpa_supplicant is responsible about authentication and association between the wireless cards and the router (access point). So I 
would like to know if I could solve my problem via wpa_supplicant so I could work on 5GHz band if I am near my router and work on 2.4 GHz band
if I am far away without any need to stop all the downloading operations.

????????? Wish that I explained my problem in a clearer way. I am using Ubuntu 10.10, Atheros ar9280 wireless card and Linksys E2000 router.

Thanks again

> Date: Fri, 2 Dec 2011 18:13:00 +0200
> From: j at
> To: hostap at
> Subject: Re: Downloading stops when change the working channel/band!!!
> On Fri, Dec 02, 2011 at 04:50:13PM +0200, Amr Al-Hamad wrote:
> >      I am using AR9280 wireless card and E2000 linksys router to be able to connect to 5 GHz band. The problem happens when I begin
> > a downloading process from internet, then change the working channel or band via GUI during this downloading process. The
> > downloading stops.
> What do you mean with "GUI" in this context and is the exact operation
> you do here? Why would you change the channel at that point?
> >I want to ask if I could solve this problem (prevent the stopping) via wpa_supplicant? Also I want to ask if this
> > stopping happens due to the authentication/ association processes?
> It is difficult to say, because that description was not very clear on
> what exactly happened.
> --
> Jouni Malinen PGP id EFC895FA
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