[Olsr-users] Strange ignored packets problem

[Aaron Kaplan]

which card / driver do you use?


On Jul 20, 2007, at 8:47 AM, Ignacio García Pérez wrote:

> Hi,
>
> I have a test setup of 7 nodes deployed in a 1 sq. km urban area.
>
> The net is 10.0.0.0/8, nodes are numbered 10.1.1.10, 10.1.1.20,
> 10.1.1.30 and so on.
>
> The broadcast address is the olsrd default: 10.255.255.255.
>
>  From a node, olsrd sees HELLO/TC packets from the nodes with a good
> connection, but seems to see NO PACKETS AT ALL from nodes to which I
> know it has a poor (BUT USABLE) connection.
>
> Then, if I start tcpdump, olsrd suddenly starts seeing packets from
> those nodes (with an expected 25% or so packet loss).
>
> It looks like the radio card discards those packets when it is not in
> promiscuous mode (which is the side effect of running tcpdump AFAIK).
>
>
>
> When I change the setup to use 255.255.255.255 as broadcast  
> address, no
> packets are ignored.
>
>
>
> Any idea about what may be the explanation of this behaviour?
>
>
>
> Regards.
>
> -- 
> Olsr-users mailing list
> (spam-protected)
> http://lists.olsr.org/mailman/listinfo/olsr-users
>

---
C.O.S.H.E.R. - Completely Open Source Headers Engineering and Research




-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 2312 bytes
Desc: not available
URL: <http://lists.olsr.org/pipermail/olsr-users/attachments/20070720/b7070d3a/attachment.bin>