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From: Xuebing Wang <xbing6@gmail.com>
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Date: Sat, 22 Apr 2017 15:12:54 +0800
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Subject: Re: [B.A.T.M.A.N.] [batman-adv] Does batman-adv works perfectly?
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To: Simon Wunderlich <sw@simonwunderlich.de>, b.a.t.m.a.n@lists.open-mesh.org, Sven Eckelmann <sven@narfation.org>

Hi Simon / Sven,

Do you know any hardware platform on which batman-adv (or batmand) work 
perfectly and field-proven? Thanks.

Xuebing Wang

On 2017年04月06日 15:04, Simon Wunderlich wrote:
> Hello Xuebing,
>
> it sounds like you have WiFi driver issues. There are some effects like key
> cache corruption, deafness, and other effects known for the AR93xx series. To
> confirm, you can try to use IPv6 link local ping (ping6 fe80:...%wlan0) to your
> neighbors. If you can ping but batman can't (e.g. use batctl) it's a batman
> issue. If both pings don't get through, it's most likely a WiFi driver issue.
> In this case, a master or something doesn't help. :)
>
> Cheers,
>       Simon
>
> On Thursday, April 6, 2017 10:32:29 AM CEST Xuebing Wang wrote:
>> Hi community,
>>
>> We have batman-adv working on OpenWRT Chaos Calmer.
>> - Atheros ar9331 MIPS platform + built-in ath9k WiFi
>> - batman-adv version 2016.1
>> - routing_algos = BATMAN_IV
>> - Wireless interface MTU = 1532, adhoc network encryption "psk2-ccmp"
>> - bat0 interface MTU = 1500
>>
>> We have batman-adv running on 10+ sites. For each site, there are 10-20
>> nodes in the mesh network.
>>
>> batman-adv runs almost perfectly (*almost*). Occasionally (occurrence
>> rate is low), node drops off the batman-adv / adhoc mesh.
>> - Sometimes, node can recover (re-joins the mesh network automatically),
>> but not always.
>>
>> Any suggestions? Does batman-adv works perfectly in the field (i.e.
>> running for 1 year with 100+ nodes without any issues)?
>>
>> What about I use one node as Master, and other nodes ping this Master
>> every 10s (or 30 seconds) (to keep mesh from inactivity)? Does this help?
>>
>> Thanks.
>> Xuebing Wang