Re: [B.A.T.M.A.N.] [batman-adv] Does batman-adv works perfectly?

[Simon Wunderlich <sw@simonwunderlich.de>]

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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


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