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From: Simon Wunderlich <>
Subject: Re: Bonding Alternating
Date: Fri, 10 Sep 2021 09:15:18 +0200	[thread overview]
Message-ID: <8679334.VDzE56WMh6@prime> (raw)
In-Reply-To: <>

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On Thursday, September 9, 2021 10:09:39 PM CEST 
> Before Adding radios to my setup I connected to computers with three NICs
> each.  I added all three interfaces to the mesh interface bat0 on each.  I
> then run iperf across it and all the traffic seems to go on one interface. 
> I run iperf3 with -p 4 so there are multiple streams.  Changing it to
> bonding does not seem to change the behavior. batctl o - shows all three
> interfaces
> batctl n - shows three interfaces -This I thought seemed odd as its one
> neighbor across three links batctl tg - shows all clients Via one address
> If anyone can point me at what to look at next or what might be wrong would
> help.
> I am using BATMAN_V version 2019.4 in kernel 5.4.68.

Hi Brian,

can you perhaps post the output of those commands?

If bonding works, it would even spread one iperf stream among the multiple 
links. For bonding to work, the TQ values must be on a similar level, 
otherwise it will not be activated.

I haven't really tried bonding with BATMAN V, you may want to try with BATMAN 
IV instead.

Please note that bonding will schedule the packets over the available 
interfaces, but will not perform any reordering on the receiver side. This can 
upset TCP which handles reordering as losses. In experiments with WiFi links, 
I often actually got degraded performance because the queue depths of the WiFi 
links were growing differently, therefore causing reodering ...


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  reply	other threads:[~2021-09-10  7:15 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-09 20:09 Bonding Alternating brian.edmisten
2021-09-10  7:15 ` Simon Wunderlich [this message]
2021-09-10 17:59   ` brian.edmisten
2021-09-13 13:40     ` Simon Wunderlich
2021-09-14 16:57       ` Edmisten, Brian
2021-09-15  7:26         ` Simon Wunderlich
2021-09-15 14:58           ` Edmisten, Brian
2021-09-21 14:16             ` Simon Wunderlich
2021-09-21 15:41               ` Edmisten, Brian
2021-09-22  7:55                 ` Simon Wunderlich
2021-09-22 15:10                   ` Edmisten, Brian

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