Hi Javier, Thomas
I 'm running some tests on a secured mesh setup and found an issue. My 
setup has four nodes. One of the node, node 4,  is used as a mesh portal 
and is connected to PC. All the nodes (including the portal) send 
traffic constantly to the PC (FTP, iperf...).
When I bring the secured mesh up, everything works fine. All the nodes 
are within reach of each other so the all the paths (routes) point to 
the mesh portal (one hop).

node 1 <----->
node 2 <-----> node 4 <====> PC
node 3 <----->

<=>: Ethernet link
<-->: mesh link

Now if I bring down one node 1, I can see that I loose traffic for that 
node (which is expected).

node 1 <--X-->
node 2 <-----> node 4 <====> PC
node 3 <----->

If I bring node 1 back into the mesh something strange happens. All the 
paths(routes) for all the nodes will point to node 1. All the traffic is 
restored (even if now we have multi-hop routes). The paths should not be 
updated this way.

node 2 <-----> node 1 <----> node 4 <====> PC
node 3 <----->

Now if I bring back down the node 1, I loose all the traffic from all 
the nodes but the portal (node 4 is Ethernet connected to the PC). Node 
2 and Node 3 paths still point to node 1.

node 2 <--X--> node 1 <-X--> node 4 <====> PC
node 3 <--X-->

If I wait long enough, several minutes, the nodes seem to recover. This 
is a problem, the mesh should self heal when nodes come and go from the 
mesh.

This behavior does not happen in an open mesh setup. I'm using 
open80211s-0.5.

Any idea?
Thanks.

--Fabrice

_______________________________________________
Devel mailing list
[email protected]
http://open80211s.com/mailman/listinfo/devel

Reply via email to