Hello,
We have finally deployed a WMN testbed on our campus , currently running roofnet. However I would like to run BATMAN as the underlying routing protocol. Could you help me out with deploying and testing BATMAN on the nodes.
Further since our nodes have two radio we are looking at taking advantage of the same. Any pointers from a coding perspective to tackle this would be great as I am hoping to publish the same.
Also does Batman advanced operate in Monitor mode?
Thanks
Kartik
Hi,
Further since our nodes have two radio we are looking at taking advantage of the same. Any pointers from a coding perspective to tackle this would be great as I am hoping to publish the same.
what do you mean ? You want to know where in the code batman handles multiple radio interfaces ?
Also does Batman advanced operate in Monitor mode?
Unlike MIT roofnet the batman kernel module does not operate inside of the wifi driver. Batman does not care about the underlying driver / mode / etc - it can run on anything that transmits Ethernet packets.
Regards, Marek
On Wed, May 27, 2009 at 11:33 AM, Marek Lindner lindner_marek@yahoo.de wrote:
Hi,
Further since our nodes have two radio we are looking at taking advantage of the same. Any pointers from a coding perspective to tackle this would be great as I am hoping to publish the same.
what do you mean ? You want to know where in the code batman handles multiple radio interfaces ?
At the Wireless Battle Mesh of Paris, the author of Babel wrote a quick patch to add some cost to hop over the same wifi interface.
Here is a summary:
http://hackerspace.be/wbm2009#toc9
Now if Batman would handle the same, that would be nice.
@Marek
* what do you mean ? You want to know where in the code batman handles multiple radio interfaces ?
Yes. I have just started going through the code so wondering how multiple interfaces are handled.
@Benjamin
At the Wireless Battle Mesh of Paris, the author of Babel wrote a
quick patch to add some cost to hop over the same wifi interface.
Here is a summary:
We are trying to service the internet access through a regular infrastructure mode via an access point connected to the wired interface on the node. Apart from that each node has 2 wireless interfaces that can be used to reduce intra hop interference. So wanted to know if BATMAN can take advantage of two radio on each node to improve throughput.
________________________________
From: Kartik Muralidharan Sent: Wednesday, May 27, 2009 1:52 PM To: 'b.a.t.m.a.n@open-mesh.net' Subject: MultiRadio Batman
Hello,
We have finally deployed a WMN testbed on our campus , currently running roofnet. However I would like to run BATMAN as the underlying routing protocol. Could you help me out with deploying and testing BATMAN on the nodes.
Further since our nodes have two radio we are looking at taking advantage of the same. Any pointers from a coding perspective to tackle this would be great as I am hoping to publish the same.
Also does Batman advanced operate in Monitor mode?
Thanks
Kartik
On Wed, May 27, 2009 at 1:52 PM, Kartik Muralidharan kartik_m@nus.edu.sg wrote:
@Marek
Ø what do you mean ? You want to know where in the code batman handles multiple radio interfaces ?
Yes. I have just started going through the code so wondering how multiple interfaces are handled.
@Benjamin
At the Wireless Battle Mesh of Paris, the author of Babel wrote a
quick patch to add some cost to hop over the same wifi interface. Here is a summary: http://hackerspace.be/wbm2009#toc9
We are trying to service the internet access through a regular infrastructure mode via an access point connected to the wired interface on the node. Apart from that each node has 2 wireless interfaces that can be used to reduce intra hop interference. So wanted to know if BATMAN can take advantage of two radio on each node to improve throughput.
I tried Batman at the WBM to see if it was finding the fastest route in terms of bandwidth, and it was not doing it. So Batman will continue to hop on the same channel, even if another route is faster in terms of bandwidth.
-- Benjamin Henrion <bhenrion at ffii.org> FFII Brussels - +32-484-566109 - +32-2-4148403
I tried Batman at the WBM to see if it was finding the fastest route in terms of bandwidth, and it was not doing it. So Batman will continue to hop on the same channel, even if another route is faster in terms of bandwidth
Just to clarify. Every node has 2 radios. One on 11a and the other 11b. Does batman take advantage of this like WCETT/iAware/MIC ....
Thanks Kartik
________________________________
From: Kartik Muralidharan Sent: Wednesday, May 27, 2009 1:52 PM To: 'b.a.t.m.a.n@open-mesh.net' Subject: MultiRadio Batman
Hello,
We have finally deployed a WMN testbed on our campus , currently running roofnet. However I would like to run BATMAN as the underlying routing protocol. Could you help me out with deploying and testing BATMAN on the nodes.
Further since our nodes have two radio we are looking at taking advantage of the same. Any pointers from a coding perspective to tackle this would be great as I am hoping to publish the same.
Also does Batman advanced operate in Monitor mode?
Thanks
Kartik
On Wed, May 27, 2009 at 3:28 PM, Kartik Muralidharan kartik_m@nus.edu.sg wrote:
I tried Batman at the WBM to see if it was finding the fastest route
in terms of bandwidth, and it was not doing it. So Batman will
continue to hop on the same channel, even if another route is faster
in terms of bandwidth
Just to clarify. Every node has 2 radios. One on 11a and the other 11b. Does batman take advantage of this like WCETT/iAware/MIC ….
No.
-- Benjamin Henrion <bhenrion at ffii.org> FFII Brussels - +32-484-566109 - +32-2-4148403
On Wednesday 27 May 2009 17:52:25 Benjamin Henrion wrote:
At the Wireless Battle Mesh of Paris, the author of Babel wrote a quick patch to add some cost to hop over the same wifi interface.
Right, that is still on open point on my ToDo. I'd like to automate that if possible but did not have a good idea how to do that.
Kartik: Any idea how roofnet is doing it ? Config ?
Regards, Marek
On Wed, May 27, 2009 at 4:55 PM, Marek Lindner lindner_marek@yahoo.de wrote:
On Wednesday 27 May 2009 17:52:25 Benjamin Henrion wrote:
At the Wireless Battle Mesh of Paris, the author of Babel wrote a quick patch to add some cost to hop over the same wifi interface.
Right, that is still on open point on my ToDo. I'd like to automate that if possible but did not have a good idea how to do that.
When a packet comes from the same interface, add a cost it.
-- Benjamin Henrion <bhenrion at ffii.org> FFII Brussels - +32-484-566109 - +32-2-4148403
On Wednesday 27 May 2009 23:05:39 Benjamin Henrion wrote:
Right, that is still on open point on my ToDo. I'd like to automate that if possible but did not have a good idea how to do that.
When a packet comes from the same interface, add a cost it.
Thats a bit too brief for me. Would you mind being more verbose ? :-)
Regards, Marek
On Wed, May 27, 2009 at 5:29 PM, Marek Lindner lindner_marek@yahoo.de wrote:
On Wednesday 27 May 2009 23:05:39 Benjamin Henrion wrote:
Right, that is still on open point on my ToDo. I'd like to automate that if possible but did not have a good idea how to do that.
When a packet comes from the same interface, add a cost it.
Thats a bit too brief for me. Would you mind being more verbose ? :-)
Let's say a packet comes from node A interface ath0 of node B, and there is a route on node B for the packet to go to node C, route which use the same interface ath0. In this case, you might want to add a cost to hop over the same wireless interface.
On Wed, May 27, 2009 at 5:39 PM, Benjamin Henrion bh@udev.org wrote:
On Wed, May 27, 2009 at 5:29 PM, Marek Lindner lindner_marek@yahoo.de wrote:
On Wednesday 27 May 2009 23:05:39 Benjamin Henrion wrote:
Right, that is still on open point on my ToDo. I'd like to automate that if possible but did not have a good idea how to do that.
When a packet comes from the same interface, add a cost it.
Thats a bit too brief for me. Would you mind being more verbose ? :-)
Let's say a packet comes from node A interface ath0 of node B, and there is a route on node B for the packet to go to node C, route which use the same interface ath0. In this case, you might want to add a cost to hop over the same wireless interface.
I say "wireless" in this case because "wired" is usually full duplex and not half duplex. Half duplex makes the situation worse for the reasons I explained here:
http://hackerspace.be/wbm2009#toc9
Hopping over the same radio means:
* dividing the bandwidth by two at each hop and * choosing the worst radio link of your two neighboors
On Wednesday 27 May 2009 23:39:37 Benjamin Henrion wrote:
Let's say a packet comes from node A interface ath0 of node B, and there is a route on node B for the packet to go to node C, route which use the same interface ath0. In this case, you might want to add a cost to hop over the same wireless interface.
Ok, good idea. I quickly made a patch: http://www.open-mesh.net/changeset/1276
Feel free to test it. :-)
Regards, Marek
b.a.t.m.a.n@lists.open-mesh.org
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Benjamin Henrion -
Kartik Muralidharan -
Marek Lindner