Question about multiple AP networks

Lucas Cornelisse lcornelisse at
Thu May 22 14:18:09 EDT 2003

Matthew F., thanks for the help!

But to clarify, are you saying that if i joined the STARBUCKS network using
I wouldn't be able to keep my existing FREDNET ssid?

And, i'm guessing that I couldn't reliably rely on starbucks actually having
a WDS system in place anyways right?

Do you know if I'm right about being able to operate in IBSS and BSS mode at
the same time?
Is my logic flawed in thinking that I could run in AP mode as well as
joining a BSS?

The thing that's bothering me is, that after examining the code, the way i
see it is this:

You assign an SSID to the prism,
You assign a channel,
Then you tell it if it's AP, IBSS, or BSS

It looks to me like you /can't/ do, say, this:

Assign BSS to join SSID = STARBUCKS
Assign AP ssid = FREDNET
Assign BSS channel 1
Assign AP channel 2
Hey Prism, you are AP _AND_ BSS

But the nagging feeling i have is that you can have
multiple IBSS networks and a BSS network at the same time...
but this is just a nagging feeling, i'm not sure if you can do this..

Again, thanks for your help,
and kudos to the hostap team! it's quite a piece of work!
(i broke the colour printer printing all the code :D )


Lucas Cornelisse

Software Developer
Simmic.Net Inc.
lcornelisse at
(613) 599-9108 x232
-----Original Message-----
From: Matthew Frederico [mailto:matt at]
Sent: May 21, 2003 11:39 AM
To: Lucas Cornelisse
Subject: Re: Question about multiple AP networks

Well .. WDS from my understanding (and limited use) is for a "repeater"
..  So if you are trying to repeat the signal of the starbucks use WDS.
I haven't tried using WDS as a Client / AP at the same time though.

Anybody else?

On Tue, 2003-05-20 at 17:23, Lucas Cornelisse wrote:
> Hi, I've got a hypothetical question that's keeping us all awake at night
> here.. It's probably a no-brainer for you people though..
> Say I've got a laptop (fred) running HostAP[d], and say a PDA and another
> laptop (toby and bob).
> Say fred, toby, and bob are all on my wireless network, with my own wep
> keys, and an SSID of FRED-NET, and private addresses. With fred doing dhcp
> and nat..
> Now, I need to take my hostap box fred, and bring him into a starbucks,
> have fred connect separately
> to starbuck's network, say with no wep and an SSID of STARBUCKS. Now fred
> will be the gateway to the internet
> for the computers on my little FRED-NET?
> My question isn't exactly can "hostap[d]" do this, but more like, is this
> possible?
> After examining the code, it looks to me like the prism can be in only one
> of three modes, AP, BSS, or IBSS.
> It seems to me a card can do BSS and IBSS at the same time, can it do AP
> the same time? Specifically,
> AP mode with different wireless networks? In the above example, FRED-NET
> Is this what WDS is all about? Is WDS necessary for this?
> Any advice?
> Thanks in advance,
> Lucas
> --
> Lucas Cornelisse
> Software Developer
> Simmic.Net Inc.
> lcornelisse at
> (613) 599-9108 x232
> _______________________________________________
> HostAP mailing list
> HostAP at
Matthew Frederico
Unwired Networks
mfrederico at

More information about the HostAP mailing list