Thread (27 messages) 27 messages, 7 authors, 2011-10-19

Re: [B.A.T.M.A.N.] batman-adv 2011.2.0 hop somtimes does not work

From: Antonio Quartulli <hidden>
Date: 2011-08-31 16:07:13

On Wed, Aug 31, 2011 at 05:57:44PM +0200, wayne abroue wrote:
On Wed, Aug 31, 2011 at 11:55 AM, Marek Lindner [off-list ref] wrote:
quoted
Hi,
quoted
At first everything seemed to work. A node on the one end could ping a
node on the other end over the mesh-network. The ping was hopping from
node to node as expected.

But sometimes some paths do not work anymore.

Some nodes can only reach their direct neighbors via a "normal ping". A
ping to a node via one hop does not work. A "batctl ping" does work!

This only happens to parts of the network and is not permanent. If i
wait it will recover, but then the problem appears at another node.
since "batctl ping" works I'd say your mesh works fine - you have a problem in
your higher layers. Maybe a mac address collision or an ARP timeout ?

Can you provide specific examples we can go through ? For instance, provide
the batctl ping output to the neighbor in question, the ping error message
(does it say timeout / host could not be found / etc), a batctl traceroute to
the neighbor in question and the output of the global translation table.

Are you trying to ping a 'fixed' node or a node that is roaming ?

Regards,
Marek
I'd also check signal strength,, have experienced this  when levels
are fluctuating, ie: batctl ping works, ip not. then comes back.
Could it be a TT problem? Please, try to enable TT related log only (using
"batctl ll x", I can't remember the correct x value) and copy/paste the output
of "batctl l" during the blackout time to
the moment when everything restart to work.
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