Hi
With reference to the wiki topic at https://www.open-mesh.org/projects/batman-adv/wiki/Tweaking bonding
Available since: batman-adv 2010.1.0
When running the mesh over multiple WiFi interfaces per node batman-adv is capable of optimizing the traffic flow to gain maximum performance. Per default it operates in the "interface alternating" mode (which is suitable for most situations) that switches the WiFi interface with each hop to avoid store & forward. Alternatively, batman-adv can be switched into "bonding mode" in which batman-adv is using all interfaces at the same time to send & receive data. However, this mode is only recommended in special one-hop cases. You can read about our alternatebonding test results to see what suits you best.
The wiki shows that this is the only change required on both nodes to use it in default interface alternating mode
batctl meshif bat0 bonding enabled
The wiki does not say how the throughput was measured after bonding was enabled
Will batctl tp be ok?
Regards
On Thursday, June 25, 2020 2:14:06 PM CEST Mark Birss wrote:
Hi
With reference to the wiki topic at https://www.open-mesh.org/projects/batman-adv/wiki/Tweaking bonding
Available since: batman-adv 2010.1.0
When running the mesh over multiple WiFi interfaces per node batman-adv is capable of optimizing the traffic flow to gain maximum performance. Per default it operates in the "interface alternating" mode (which is suitable for most situations) that switches the WiFi interface with each hop to avoid store & forward. Alternatively, batman-adv can be switched into "bonding mode" in which batman-adv is using all interfaces at the same time to send & receive data. However, this mode is only recommended in special one-hop cases. You can read about our alternatebonding test results to see what suits you best.
The wiki shows that this is the only change required on both nodes to use it in default interface alternating mode
batctl meshif bat0 bonding enabled
The wiki does not say how the throughput was measured after bonding was enabled
Will batctl tp be ok?
Hi Mark,
bonding was measured on 802.11a/g routers (yes, before there was 11n) back in the day using iperf. There was no throughput meter at this point, but it might work just as well. In general, there were many situations where bonding actually decreased the throughput because the buffers of the radios were not synchronized, causing packet re-ordering on the receiver which TCP is very sensitive to. In general, I can't really recommend to activate bonding at this point, but you can enable it and see if it helps you.
Cheers, Simon
Ah, okay understood. Thank you for the explanation.
My focus currently is on batman-adv over ethernet. I will get around to see how this works out
Regards
On Thu, Jun 25, 2020 at 2:23 PM Simon Wunderlich sw@simonwunderlich.de wrote:
On Thursday, June 25, 2020 2:14:06 PM CEST Mark Birss wrote:
Hi
With reference to the wiki topic at https://www.open-mesh.org/projects/batman-adv/wiki/Tweaking bonding
Available since: batman-adv 2010.1.0
When running the mesh over multiple WiFi interfaces per node batman-adv is capable of optimizing the traffic flow to gain maximum performance. Per default it operates in the "interface alternating" mode (which is suitable for most situations) that switches the WiFi interface with each hop to avoid store & forward. Alternatively, batman-adv can be switched into "bonding mode" in which batman-adv is using all interfaces at the same time to send & receive data. However, this mode is only recommended in special one-hop cases. You can read about our alternatebonding test results to see what suits you best.
The wiki shows that this is the only change required on both nodes to use it in default interface alternating mode
batctl meshif bat0 bonding enabled
The wiki does not say how the throughput was measured after bonding was enabled
Will batctl tp be ok?
Hi Mark,
bonding was measured on 802.11a/g routers (yes, before there was 11n) back in the day using iperf. There was no throughput meter at this point, but it might work just as well. In general, there were many situations where bonding actually decreased the throughput because the buffers of the radios were not synchronized, causing packet re-ordering on the receiver which TCP is very sensitive to. In general, I can't really recommend to activate bonding at this point, but you can enable it and see if it helps you.
Cheers, Simon
b.a.t.m.a.n@lists.open-mesh.org
-
Mark Birss -
Simon Wunderlich