Multihop Ad-Hoc on Linux

Hi,

Has any one tested ad hoc mode on Linux such that a node acts as a
packet forwarder when two other nodes does not see each other? It's
straightforward to put all nodes in ad hoc node and they communicate
with each other in a peer-to-peer fashion. But making a node act as a
router that forwards packets between two nodes sounds tricky if
possible at all on standard Linux without using any software.
(Platform: Red Hat Linux, Cisco 340/350 series WLAN card)
I appreciate any comments. Like how you have been able to do this on
standard Linux or if you have tested any software.

thanks,
Farshad

(E-Mail Removed) (Farshad) wrote news:801fa27c.0308082108.645f08a1
@posting.google.com:

> Has any one tested ad hoc mode on Linux such that a node acts as a
> packet forwarder when two other nodes does not see each other? It's
> straightforward to put all nodes in ad hoc node and they communicate
> with each other in a peer-to-peer fashion. But making a node act as a
> router that forwards packets between two nodes sounds tricky if
> possible at all on standard Linux without using any software.
> (Platform: Red Hat Linux, Cisco 340/350 series WLAN card)
> I appreciate any comments. Like how you have been able to do this on
> standard Linux or if you have tested any software.

Are you talking to use a linux box as a tcp/ip router ?

or do you search to set the linuc box as a ethernet bridge (transparent
ethernet router, equivalent to an ethernet switch) ?

No problem with the standard Linux capabilities.

I suggest you to have a look at :

http://www.tldp.org/HOWTO/Home-Network-mini-HOWTO.html


Regards

Dans sa prose, Farshad nous ecrivait :
> I can do this easily with an ethernet card or wireless card in managed
> mode. But the things don't work the same way in ad hoc mode. Have you been
> able to do this in ad hoc mode?

Routing in adhoc mode is far more complex than classicial routing. You
have to implement quite complex routing protocols in order to address
adhoc networks specific issues, such as node equivalence (each node is a
potential router), roaming (network topologie can change very fast),
security (must prevent rogue node insertion), etc.

You should have a look to :

http://www.ietf.org/html.charters/manet-charter.html

Google search will give you valuable pointers (including this one) on the
topic :

http://www.google.fr/search?q=ad+hoc+network+routing


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In article <(E-Mail Removed) >,
Farshad wrote:
> I can do this easily with an ethernet card or wireless card in managed
> mode. But the things don't work the same way in ad hoc mode. Have you
> been able to do this in ad hoc mode?

I'm interested in this discussion, but I don't understand something: why
not just use managed / infrastructure mode? Thanks.
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