[Openswan Users] Bridging lan over wireless link

[Dan Searle]

Hi,

The problem with bridging using wireless links is that you can only
put a radio in "Access Point" mode into a bridge. Trying to put an
Ad-Hoc or Station mode radio interface into a bridge won't work as it
has no notion of a "Promiscuous" mode. I.e. only the AP in an 802.11
network can be "Promiscuous".

I would use "vtun" software to create an ethernet bridge between the
two nodes. There's plenty of docs on how to use vtun, and it works
perfectly for me. You could still load balance by setting up a load
balanced routed IP network between the two nodes radio interfaces,
after this is setup, configure vtun at both ends, bridge the "tap" and
ethernet interface, you should be sorted.

http://vtun.sourceforge.net/

Regards, Dan...

Sunday, February 6, 2005, 11:01:36 AM, you wrote:

> Hi all,

> I want to create a bridge (see picture below) between 2 LANs with
> the same IP range (192.168.0.0/24) using 2 wireless links that use
> load sharing over multiple interfaces (as descibed here:
> http://lartc.org/howto/lartc.loadshare.html) for load balancing and
> fault tolerance. Both links should use IPsec for encryption.

> I have googled for an example that does this but I could not find it.

> Is this possible? Not in threory but in practise: has anyone done
> this? If so, can anyone give me an example/pointer to an example of
> how to do this?


>                          ________     ________
>                         |        |   |        |
>                         | ant1.1 |---| ant2.1 |
>                         |________|   |________|
>              _________       |            |        _________
>             |         |-eth1-+            +--eth1-|         |
> lan1 --eth0-| bridge1 |                           | bridge2 |-eth0--lan2
>             |_________|-eth2-+            +--eth2-|_________|
>                          ____|___     ____|___
>                         |        |   |        |
>                         | ant1.2 |---| ant2.2 |
>                         |________|   |________|




> Groeten,

> Joost Kraaijeveld
> Askesis B.V.
> Molukkenstraat 14
> 6524NB Nijmegen
> tel: 024-3888063 / 06-51855277
> fax: 024-3608416
> e-mail: J.Kraaijeveld at Askesis.nl
> web: www.askesis.nl 
> _______________________________________________
> Users mailing list
> Users at openswan.org
> http://lists.openswan.org/mailman/listinfo/users


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--

Dan Searle
Adelix Ltd
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