Linux Ethernet Bridging - May 2010 - [Bridge] Hardware requirements for bridging wired+wireless together

Hi,

I have been trolling the 'net as well as the archives of this list for
quite a while now.

I am still unclear on the requirements for getting an Ethernet and
Wireless interface to bridge together.

Currently, I am working with an esoteric radio that only supports Ad-Hoc
and Managed modes.  There seemingly is not support for WDS (Wireless
Distribution System) on this radio.

I have been trying to bridge my eth0 and wlan0 but it doesn't seem to
work.  Currently, my commands to get the bridge up are:

ifconfig eth0 0.0.0.0
ifconfig wlan0 0.0.0.0
brctl addbr br0
brctl addif br0 eth0
brctl setfd br0 1           #BusyBox version of brctl doesn't take 0 as
a time parameter so I change it to 1 (sec)
ifconfig br0 up
wpa_supplicant -Dwext -iwlan0 -bbr0 -c/root/wpa_supplicant.conf

Then I try to run udhcpc (DHCP client) on the bridge hoping to get DHCP
from the AP/router:

# udhcpc -ibr0 -b
udhcpc (v1.15.2) started
Sending discover...
Sending discover...
Sending discover...
No lease, forking to background

What I'd like to inquire is that is WDS support in the firmware/hardware
of the radio required to bridge eth0 and wlan0?
Any other tips to get the above interfaces to successfully bridge
together would be great.

Thanks,
Umar
 
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Umar Qureshey wrote:
> Hi,
>
> I have been trolling the 'net as well as the archives of this list for
> quite a while now.
>
> I am still unclear on the requirements for getting an Ethernet and
> Wireless interface to bridge together.
>
> Currently, I am working with an esoteric radio that only supports Ad-Hoc
> and Managed modes.  There seemingly is not support for WDS (Wireless
> Distribution System) on this radio.
>
> I have been trying to bridge my eth0 and wlan0 but it doesn't seem to
> work.  Currently, my commands to get the bridge up are:
>
> ifconfig eth0 0.0.0.0
> ifconfig wlan0 0.0.0.0
> brctl addbr br0
> brctl addif br0 eth0
> brctl setfd br0 1           #BusyBox version of brctl doesn't take 0 as
> a time parameter so I change it to 1 (sec)
> ifconfig br0 up
> wpa_supplicant -Dwext -iwlan0 -bbr0 -c/root/wpa_supplicant.conf
I think you forgot to add wlan0 to the bridge:

brctl addif br0 wlan0

	Nicolas.
> Then I try to run udhcpc (DHCP client) on the bridge hoping to get DHCP
> from the AP/router:
>
> # udhcpc -ibr0 -b
> udhcpc (v1.15.2) started
> Sending discover...
> Sending discover...
> Sending discover...
> No lease, forking to background
>
> What I'd like to inquire is that is WDS support in the
firmware/hardware
> of the radio required to bridge eth0 and wlan0?
> Any other tips to get the above interfaces to successfully bridge
> together would be great.
>
> Thanks,
> Umar
>
> **********************************************************************
> This e-mail is the property of Lantronix. It is intended only for the
person or entity to which it is addressed and may contain information that is
privileged, confidential, or otherwise protected from disclosure. Distribution
or copying of this e-mail, or the information contained herein, to anyone other
than the intended recipient is prohibited.
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