Hi Andy!
On October 27, 2020 4:51:09 AM GMT-03:00, Andy Schopf <
andymcschopf(a)gmail.com> wrote:
Hi Ilario,
my actual Configuration is: OpenWrt 190704 (on ex6150v2) and snapshot
(ex6120/30) with libremesh 20.09
lime community with:
[...]
config lime 'wifi'
option htmode_5ghz 'VHT80'
option htmode_2ghz 'HT40'
option distance '100'
[...]
and lime-node with:
[...]
config lime 'wifi'
config wifi 'radio0' # 5GHz
list modes 'ap'
list modes 'ieee80211s'
config wifi 'radio1'
list modes 'ap'
list modes 'apname'
[...]
I use es6120/30 as Mesh-Nodes -> No use of the LANPort.
And an ex6150v2 as Connection to the internet (1GBit Lan-Port).
When I check the Lime-App (-> Metriken) I got an speed of max 60MBits.
in
luci I see connection Speeds between 150 - 866 MBits RX/TX speed.
This speed is the bitrate, so, how quick each bit is put into the wireless
medium.
But it does not take into account how crowded the medium is, only one
radio can use the medium at a time. So the radio may be able to transfer
the packet very quickly but it may have to wait some time between packets
because others are using the medium (other nodes of the same network or
other networks in the neighborhood).
There are counters available in some radio chips that report the airtime
usage (radio busy, rx busy, tx busy, etc). For the ath9k driver they are
available in /sys/ (do some find and greping there I don't recall exactly).
Also you can do some scanning to check if there are other access points
using these channels. Take in consideration the channel width.
Also, depending on the hardware it may be the case that the CPU can't send
much faster due to how the driver is implemented. Check with top of you see
high usage.
Hope this helps,
SAn
When I use an Internet connection Speedcheck modei
got download between
1
(yes 1 - very strange) to 40 MBit and upload 15 - 40 MBit.
As you mentioned I will try to use the 5Ghz part only as mesh - and
report
back ;-)
For your understanding: My Intention was to use AP on both - faster
Connection for 5Ghz able devices (IPad, iPhone) and 2 GHz for the older
ones... 2Ghz also as apname.
In my personal opinion the whole speed thing could be a showstopper
(for
eg. lime)... but if solved the solution for many cheap meshes!
Regards,
Andy
Am Mo., 26. Okt. 2020 um 22:17 Uhr schrieb Ilario Gelmetti <
iochesonome(a)gmail.com>gt;:
On 10/26/20 3:04 PM, Andy Schopf wrote:
> I have a test-network running with a bunch of ac/an Adapters.
>
> I got connections up to 866MBits between the adapters (5Ghz mesh)
but
> even with this fast connection I only got
40Mbit up/down Speed in
> direction to the internet.
>
> Only on the one Adapter connected directly to the Internet i got
the
> full speed (250/40).
> I also played around with distance parameters with no measurable
impact.
Are there
other possibilities to speed up the mesh?
That's a superinteresting topic, but I never tested it.
Which device is the AC one? Are them the "ex6120 and ex6130 Extender"
you mentioned in the other email?
I have no idea of how well the 802.11s mesh works with MediaTek. The
only thing I know about MediaTek is that you could have problem when
meshing over ethernet cable [1].
Maybe try changing the htmode (the wifi channel width [2]) to HT40
for
2.4 GHz and VHT40/VHT80 (which should work only
for AC routers) for 5
GHz.
This could as well degrade performances rather
than improve them [2]
but
it's worth a try.
Due to a bug, this does not work when using LibreMesh based on
OpenWrt
18.06 [3] but this should be ok for you on
snapshot.
In /etc/config/lime-node
config lime wifi
option htmode_2ghz 'HT40'
option htmode_5ghz 'VHT40'
and then lime-config and reboot.
Another thing I always wondered but I never actually tested is how
much
does impact to have one or two AP interfaces [4]
(as compared to
having
just 802.11s mesh), do you think you can test
it?
For doing this, simply define the modes list with just the mesh.
In /etc/config/lime-node
config lime wifi
list modes 'ieee80211s'
and then lime-config and reboot.
Please let us know!
Thanks for experimenting <3
Ciao,
Ilario
[1]:
https://forum.openwrt.org/t/mediatek-and-vlan-802-1ad-on-ethernet/42346
[2]:
> [3]:
>
https://github.com/libremesh/lime-packages/issues/647
> [4]:
>
https://github.com/libremesh/lime-packages/issues/109
>
> --
> Ilario
> iochesonome(a)gmail.com
> ilario(a)sindominio.net
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> lime-users mailing list
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>
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