Re: [B.A.T.M.A.N.] multicast packet loss

Gioacchino Mazzurco
2012-08-06T15:48:01Z

The problem was that babeld assumed bat0 as a wired interface so when 2
or 3 packet was lost it marked the route as unreachable, now the problem
is fixed thanks to a patch from julius

by the way it is not normal that batman loss packet on wired links and I
think we should do some debug to understand what is happening...

I am going to do some test as ordex said trying to make things clear

On 08/06/2012 03:43 PM, Antonio Quartulli wrote:
> On Mon, Aug 06, 2012 at 03:05:49PM +0200, Gioacchino Mazzurco wrote:
>> Hi all!
>>
>> I am experiencing a multicast packet loss on batman-adv mesh, this can
>> appear normal but it is not because the mesh is on top of wired Ethernet
>> link!
>>
>> the host fe80::c8e0:2cff:fe9b:6d1f is sending a multicast hello message
>> every 4 seconds on bat0 interface, but as you can see from the dump
>> timing on a machine attached on the same switch they are not arriving
>> regurarly so what is happening? Is this normal?
>
> Hello Gioacchino,
>
> I'd say that losing packets is not normal :-)
> Have you tried to use batctl td on the wired interface? You should see the
> "broadcast" packets going around. It would be interesting to understand if on
> batctl you had more packets than what you are receiving on the node.
>
> Cheers,
>
>
> p.s. what kind of hello messages are they? Their size is changing over time..
>