Re: [B.A.T.M.A.N.] batman majareta? I can batctl ping but not ping

[Gioacchino Mazzurco <gio@eigenlab.org>]

[-- Attachment #1: Type: text/plain, Size: 3772 bytes --]

I'll compile batman-adv with debug support for next firmware update i
hope it will not affect performance too much...

On 07/21/12 23:40, Antonio Quartulli wrote:
> Hello Gioacchino,
> 
> On Sat, Jul 21, 2012 at 08:54:05PM +0200, Gioacchino Mazzurco wrote:
>> Same bug today in ninux pisa after a node was turned off the entire
>> network became crazy for 2 hours, to solve i had to restart a lot of
>> nodes... :|
>>
> 
> Which version are you using? The lastest openwrt package version (so with all
> the new patches?)
> 
> Could you provide the log of the involved nodes whenever you get this problems?
> I wrote something about the desired logs to Guido, you could follow the same
> instruction. It would really be appreciated!
> 
> Thank you!
> 
> 
> Cheers,
> 
>> On 07/02/12 15:30, Guido Iribarren wrote:
>>> (which roughly translates as "batman gone nuts?")
>>> Hey great devs!
>>> we've been having a particular issue in deltalibre and quintanalibre
>>> (local WCN) with batman-adv, but so far we haven't found a precise way
>>> to reproduce it.
>>> The symptom is that (after some reboots or physical displacements?)
>>> one batman-adv host becomes unreachable on layer3, although it is seen
>>> on originators table, and can be batctl ping'ed or batctl tracerout'ed
>>> with no problem whatsoever.
>>>
>>> Even more, it not unreachable from the whole network, but instead from
>>> just a few other nodes. So, let's say that the nearer nodes can layer3
>>> ping it , but some others farther away cannot (although i can't assure
>>> it depends on the hop distance)
>>> All of them can batctl ping it (layer2)
>>> A hard reboot of all the nodes solves it, connectivity is restored in
>>> all directions.
>>>
>>> Thing is, I've just came across it again, and managed to do some tests
>>> to aid in description / debugging
>>> As an aid in understanding network topology,
>>> I'm attaching the wonderful output of "batctl vd dot |grep -v TT" for
>>> your viewing delight
>>>
>>> problem node is ana
>>> it can be reached from ruth and hquilla (direct neighbours)
>>> but arping behaves erratically from colmena or charly
>>> and normal ping (v4 or v6) doesn't receive any reply at all when run
>>> from colmena or charly
>>>
>>> I used arping, with and without -b , and seemed like i could narrow
>>> the problem down to incoming broadcast packet handling, but further
>>> tests just left me more puzzled!
>>>
>>> all nodes are tl-mr3220 running openwrt trunk r31316 with batman-adv
>>> 2012.2.0 , driver ath9k
>>> secondary interfaces named _wlan1 are all tl-wn722n which uses driver ath9k_htc
>>> nodes are around 100meters (+/-50mts) apart from each other
>>>
>>> this behaviour has been observed (but not reported) in dissimilar
>>> setups, using ubnt bullet2 mixed with mr3220, running r29936 with
>>> batman-adv 2011.4.0 , with nodes 1 or 2km apart from each other.
>>>
>>> Tests are the combined crude output of batctl td and arping, so to
>>> make this email ease on the eye, i'm publishing them elsewhere:
>>> http://pastebin.com/6PPwN3PS
>>>
>>> The live openwrt configuration can be analysed in detail at
>>> https://bitbucket.org/guidoi/deltalibre-configs/src
>>> (it's a free, open network after all! :D )
>>> in particular:
>>> ana -> https://bitbucket.org/guidoi/deltalibre-configs/src/6de4ce970fe2/mac/54_E6_FC_BE_26_12
>>> hquilla -> https://bitbucket.org/guidoi/deltalibre-configs/src/6de4ce970fe2/mac/54_E6_FC_BE_28_34
>>> colmena -> https://bitbucket.org/guidoi/deltalibre-configs/src/6de4ce970fe2/mac/54_E6_FC_BE_29_D2
>>>
>>> Thanks a lot for the attention,
>>> Hope that you are having fun, and that I'm not spoiling it :)
>>>
>>> Cheers!
>>>
>>> Gui
> 


[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 198 bytes --]