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[meritez]

I currently have 2 x Mikrotik hAP Lite paired in wireless client and wireless station using Mikrotik's NV2 proprietary wireless mode,

Code: [Select]

export
# nov/27/2021 20:12:23 by RouterOS 6.48.5
# software id =
#
# model = RB941-2nD
# serial number =
/interface bridge
add name=bridge1
/interface wireless
set [ find default-name=wlan1 ] band=2ghz-onlyn country="united kingdom" disabled=no installation=outdoor mode=station-bridge ssid=MikroTik wireless-protocol=\
    nv2
/interface list
add name=WAN
add name=LAN
/interface wireless security-profiles
set [ find default=yes ] authentication-types=wpa-psk,wpa2-psk group-ciphers=tkip,aes-ccm mode=dynamic-keys supplicant-identity=MikroTik unicast-ciphers=tkip,aes-ccm \
    wpa-pre-shared-key= wpa2-pre-shared-key=
/interface bridge port
add bridge=bridge1 interface=wlan1
add bridge=bridge1 interface=ether1
add bridge=bridge1 interface=ether2
add bridge=bridge1 interface=ether3
add bridge=bridge1 interface=ether4
/interface list member
add interface=wlan1 list=WAN
add list=LAN
add interface=ether1 list=LAN
add interface=ether2 list=LAN
add interface=ether3 list=LAN
add interface=ether4 list=LAN
/ip address
add address=192.168.88.2/24 interface=ether1 network=192.168.88.0
/ip route
add distance=1 gateway=192.168.88.1
/system clock
set time-zone-name=Europe/London
/system package update
set channel=long-term

current speeds over 2.4ghz:


This is pretty fast for a small outlay of £15 per device, next test is to power one from a powerbank in the shed and test the speeds again.

[burakkucat]

Hmm, quite an impressive result. 

[Alex Atkin UK]

Indeed, I can peak at around 95Mbit on 2.4Ghz using WiFi6.

Is that just using 20Mhz channel width?  Are there a lot of other 2.4Ghz clients in the area or relatively quiet?

[meritez]

Indeed, I can peak at around 95Mbit on 2.4Ghz using WiFi6.

Is that just using 20Mhz channel width?  Are there a lot of other 2.4Ghz clients in the area or relatively quiet?

20Mhz, TDMA instead of CSMA

[Alex Atkin UK]

That's curious, as I think that is what Ubiquiti did on the LiteBeam firmware for PtMP mode.  When using PtP mode (one client only) it should perform better without TDMA as the whole purpose of TDMA is to more efficiently deal with multiple clients, if anything the overhead should make PtP mode slower.

[burakkucat]

Perhaps the experiment could be repeated, using CSMA rather than TDMA? 

[meritez]

Perhaps the experiment could be repeated, using CSMA rather than TDMA? 

As far as I understand from this pdf: https://mum.mikrotik.com/presentations/AU11/au-savage.pdf

CSMA is basically 802.11 wireless default?

That's curious, as I think that is what Ubiquiti did on the LiteBeam firmware for PtMP mode.  When using PtP mode (one client only) it should perform better without TDMA as the whole purpose of TDMA is to more efficiently deal with multiple clients, if anything the overhead should make PtP mode slower.

Yes Ubiquiti has their own TDMA proprietary equivalent, though it's not as cheap to get hold of an Ubiquiti device compared to a £15 mikrotik.

[Alex Atkin UK]

Yes Ubiquiti has their own TDMA proprietary equivalent, though it's not as cheap to get hold of an Ubiquiti device compared to a £15 mikrotik.

Ain't that the truth.  Plus I wouldn't trust Ubiquiti to write software for a wall clock.  My LiteBeam link is stable considering I'm using it way out of spec, but it took a few years as I recall before the firmware was remotely decent.

[burakkucat]

CSMA is basically 802.11 wireless default?

Yes, of course.

I was just wondering how the two units, in exactly the same physical location and providing the same link, would perform when not using TDMA but the basic CSMA . . . Two experiments, two sets of results to compare.

[meritez]

Yes, of course.

I was just wondering how the two units, in exactly the same physical location and providing the same link, would perform when not using TDMA but the basic CSMA . . . Two experiments, two sets of results to compare.

Okay, I'll set up a few tests, 20mhz, 40mhz, CSMA, TDMA, 802.11, nstreme, nv2.

Do you just want LAN speeds over wireless?

[burakkucat]

I think a table showing the achieved link throughput for each of the various configuration options will be of interest, please. (But only if you have the time available to perform the experiments.)

[Alex Atkin UK]

Not sure about 40Mhz as in 99% of cases you can't legally use that as there has to be ZERO other networks on the channel.

[meritez]

So two hAP Lites, One set as PTP AP, other as PTP CPE:



Minimum connection rate set to 54Mbps,

Code: [Select]

# dec/02/2021 12:30:48 by RouterOS 6.48.5
# software id =
#
# model = RB941-2nD
# serial number =
/interface bridge
add name=bridge1
/interface wireless
set [ find default-name=wlan1 ] band=2ghz-onlyn channel-width=20/40mhz-XX country="united kingdom" disabled=no frequency=2422 mode=station-bridge nv2-preshared-key=\
     nv2-security=enabled ssid=MikroTik wireless-protocol=nv2
/interface list
add name=WAN
add name=LAN
/interface bridge port
add bridge=bridge1 interface=wlan1
add bridge=bridge1 interface=ether1
add bridge=bridge1 interface=ether2
add bridge=bridge1 interface=ether3
add bridge=bridge1 interface=ether4
/interface list member
add interface=wlan1 list=WAN
add interface=ether1 list=LAN
add interface=ether2 list=LAN
add interface=ether3 list=LAN
add interface=ether4 list=LAN
/ip dhcp-client
add disabled=no interface=bridge1
/system clock
set time-zone-name=Europe/London

Btest between both devices:
86 Mbps UDP
77 Mbps TCP

Ethernet ports on both hAP Lites are max 100Mbps Fast Ethernet, so even though the connection rate between both device is 270/270, there's a bottleneck

[Weaver]

I use 40MHz as I am inaudible to my nearest neighbour, because there’s a six-foot thick (approx, but literally) double stone gable-end wall in the way and it has no windows in it, although there are two windows facing southwest in another part of the house, to the west of the aforementioned wall, but I’m not sure about the angle to my neighbour’s house. My neighbour’s new house is - very very rough guess - 100m to the south of me. Could and should do an experiment with my wife’s iphone or ipad to try and measure my signal.

[Reformed]

Not sure about 40Mhz as in 99% of cases you can't legally use that as there has to be ZERO other networks on the channel.

There's no law against it.