RE: Access Points


From: Eric Johanson (ericj_at_cubesearch.com)
Date: 2002-07-17 21:14:58 UTC



First of all, make sure you have the latest firmware image.

Second, run tcpdumps on the wireless & wired interfaces to see what's up. ping from the 'client' on the eth side of the wap11. I suspect you'll find a arp whois storm, then nothing. If that's the case, then you have something up with proxyarp. If you just see ping requests and no answers (when sniffing on the hostap interface), they something is up with routes on the hostap system.

I've seen strange things with the proxyarp being broken, but not THIS broken. Here is where I've run into issues:

eth0
|
|
WAP11
|
|
Airport/rg1000
|
|
eth1

With both the airport/rg1000 AND the wap11 in bridge mode, packets would not flow. While I don't fully understand the problem, I'm told that it has something to do with ProxyARP, and the lack of headerspace in the 802.11 frames. Maybe somebody on this list can show some light on the subject better than I. I just know it doesn't work. :)

Here is what HAS worked for me:

eth0
|
|
WAP11
|
|
HostAP
|
|
eth1

I had to setup the hostap system to ROUTE packets, and not bridge them.

-Eric

On Wed, 17 Jul 2002, Pablo Berra wrote:

>
> Eric,
>
> I have all in the same network, and don't work, I don't use gateways in my tests.
> For example:
> HostAP - 192.168.0.1
> Client on WAP11 ethernet - 192.168.0.2
> WAP11 - 192.168.0.3
>
> The HostAP and the client can ping the WAP11, but can't ping between them.
> I know that the WAP11 only bridge and doesn't route. It has the IP only to ping it and for SNMP administration.
>
> Thanks again.
>
> -----Original Message-----
> From: Eric Johanson [mailto:ericj_at_cubesearch.com]
> Posted At: Wednesday, July 17, 2002 16:06
> Posted To: HostAP
> Conversation: Access Points
> Subject: RE: Access Points
>
>
> Because the WAP11 acts like a bridge, you'll need to have the gw of the
> ethernet systems behind the wap11 pointed at the IP of the HOSTAP system.
>
> I've had problems connecting two wireless bridges up; but it works great
> if one of them is routing & not bridging. Being that the wap11 can't
> really route, that leaves the hostap system.
>
>
> Hope this helps,
> Eric
>
>
> On Wed, 17 Jul 2002, Pablo Berra wrote:
>
> >
> > Eric (sorry about my english),
> >
> > Thanks for your answer.
> > I was testing the WAP11, and there was a problem.
> > When the WAP11 (configured in access point client mode) links to the HostAP, I can ping the WAP11 unit, but I cant reach anything connected to the WAP11 ethernet.
> > Do you have any idea?
> >
> > Thanks again!
> >
> >
> > -----Original Message-----
> > From: Eric Johanson [mailto:ericj_at_cubesearch.com]
> > Sent: Wednesday, July 17, 2002 13:08
> > To: Pablo Berra
> > Cc: Pablo Berra
> > Subject: Re: Access Points
> >
> >
> > WAP11. It has client mode.
> >
> > -Eric
> >
> > On Wed, 17 Jul 2002, Pablo Berra wrote:
> >
> > >
> > > Hi,
> > >
> > > Anyone know an Access Point (in bridge or access point client mode) that can comunicate with HostAP (in master mode)?
> > >
> > > Thanks in advance.
> > >
> > > * Pablo Berra
> > > * Laufquen Computaci�n
> > > * 5411-4867-3500
> > > * www.laufquen.com.ar
> > > * Avda Corrientes 4625 (1195) - Buenos Aires - Argentina
> > >
> >
> >
>
>



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