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David1234
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Slow wireless speed on Mikrotik RB912UAG-2HPnD

Mon Jul 26, 2021 4:57 pm

Strange issue I have notice
I have a Mikrotik RB912UAG-2HPnD connected to a simple switch connected to a fortigate (as a defualt gateway).
work without a problem , but I noticed that the max download speed is ~ 10Mbps . (even when I the device is 1 meter from the router and the signal is -45~ )
up until now my WiFi had this setup:
/interface wireless
set [ find default-name=wlan1 ] band=2ghz-g/n disabled=no frequency=2452 installation=indoor \
    mode=ap-bridge radio-name=Office rx-chains=0,1 security-profile=OfficePassword ssid="MYWiFi " \
    tx-chains=0,1 tx-power=15 tx-power-mode=all-rates-fixed wireless-protocol=802.11 wps-mode=disabled
I have connetced computer to the switch and setup the defulat gateway as the mikrotik device
check the download speed and got 100Mbps
so I know there is no problem in the fortigate , or also in the mikrotik ( I ssume) .
the ethernet and the WiFi in the mikrotk are on a bridge

can it be the password type\setting?
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=My-Router
add authentication-types=wpa2-psk,wpa2-eap group-ciphers=tkip management-protection=allowed mode=dynamic-keys \
    name=OfficePassword supplicant-identity="" unicast-ciphers=tkip wpa2-pre-shared-key=P@ssw0rd!
when I change the type to AES-CCM
I got ~ 40 MBPS

also when I try to change the WiFi to "Only-N" - I could see the netwrok in my phone , but was unable to connect to it .
using samsung phone S8\S10\S20

what could be the problem ?
Last edited by David1234 on Mon Jul 26, 2021 5:05 pm, edited 1 time in total.
 
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Re: Unable to connect wireless device to Mikrotik RB912UAG-2HPnD On band "Only N"

Mon Jul 26, 2021 5:05 pm

You have randomly set parameters and activated eap and tkip
Last edited by rextended on Mon Jul 26, 2021 5:10 pm, edited 2 times in total.
 
David1234
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Re: Slow wireless speed on Mikrotik RB912UAG-2HPnD

Mon Jul 26, 2021 5:07 pm

what do you mean?
 
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Re: Slow wireless speed on Mikrotik RB912UAG-2HPnD

Mon Jul 26, 2021 5:11 pm

Exactly what I wrote: You have randomly set parameters and activated eap and tkip
For default are not set on that way.

paste this on terminal without omit { } :
{
/interface wireless security-profiles
    set [ find default=yes ] supplicant-identity=MikroTik
    set OfficePassword disable-pmkid=yes authentication-types=wpa2-psk group-ciphers=aes-ccm \
        management-protection=disabled supplicant-identity=MikroTik unicast-ciphers=aes-ccm

/interface wireless
    set [ find default-name=wlan1 ] ssid="MYWiFi" tx-power=17 tx-power-mode=default 
}

tkip destroy connection on "n"

Also wpa2-eap method and management-protection have nothing to do with standard wifi for smartphone

And if you force with all-rated-fixed the tx power, you can cause distotion with too much power on higher data rates

And are why I wrote "You have randomly set parameters"
Last edited by rextended on Mon Jul 26, 2021 5:17 pm, edited 1 time in total.
 
David1234
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Re: Slow wireless speed on Mikrotik RB912UAG-2HPnD

Mon Jul 26, 2021 5:16 pm

much better
I can get up to 50Mbps now
can I do something else? or this is the max I can achieve?
I'm now working on
Band "Only-N" ,
Channel 20/40Mhz eC
Freq: 2452 Mhz
 
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Re: Slow wireless speed on Mikrotik RB912UAG-2HPnD

Mon Jul 26, 2021 5:19 pm

do not expect so much on 2,4GHz wifi... if the datarate is, for example 54Mbps, you really can obtain a speed from 18 to 24Mbps for channel (if no interferences present)
36 to 48Mbps if you use two channel 20+20

If you want more, you need to use a 5GHz AP, but have shorter range because 5GHz are well blocked from walls
 
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Re: Slow wireless speed on Mikrotik RB912UAG-2HPnD

Mon Jul 26, 2021 5:29 pm

the data rate setting in the WiFi is default (didn't chane anything there)
when I look at the regestration table I can the devices are connected at Tx\RX is 72.2Mbps-20Mhz/1S/SGI

I'm more then happy with this , up uitul now I had around ~ 10Mbps

just wanted to know if I can do anything else

Thanks!
 
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Re: Slow wireless speed on Mikrotik RB912UAG-2HPnD  [SOLVED]

Mon Jul 26, 2021 5:37 pm

Next step is smartphone, if have only 1 stream (1S), you can not do anything, and using "g" or "n" really do not change anything...
The 72.2Mbps-20Mhz/1S/SGI probably is the max for your smartphone

If you can use a smartphone with 2 strams (2 antennas inside) you can reach 100Mbit/s when the link is 300Mbps-40Mhz/2S/SGI
 
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Re: Slow wireless speed on Mikrotik RB912UAG-2HPnD

Mon Jul 26, 2021 5:50 pm

OK
good to know
Thank you!
 
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Re: Slow wireless speed on Mikrotik RB912UAG-2HPnD

Sun Aug 01, 2021 12:23 pm

me again :-)
I have connected a Mikrotik to Mikrotik using the same wireless setting

I can see in the registration that the signal is good ,adn it's using 2 stream
id=*391;ap=false;comment=;interface=wlan1;mac-address=AC:11:18:1B:FC:60;signal-strength=-58dBm@1Mbps;tx-rate=144.4Mbps-20MHz/2S/SGI
in the seconds Mikrotik router I have bridge with ethernet+wlan
I have connected a comuter to the ethenet and run speed test - get ~ 35MBPS also
do I need to change something in the seconds Mikrotik , bridge setting maybe? because now I shoud get much more no ?
/interface bridge
add fast-forward=no name=bridge1
/interface ethernet
set [ find default-name=ether1 ] advertise=\
    10M-half,10M-full,100M-half,100M-full,1000M-half,1000M-full 
set [ find default-name=ether2 ] advertise=\
    10M-half,10M-full,100M-half,100M-full,1000M-half,1000M-full
set [ find default-name=ether3 ] advertise=\
    10M-half,10M-full,100M-half,100M-full,1000M-half,1000M-full 
set [ find default-name=ether4 ] advertise=\
    10M-half,10M-full,100M-half,100M-full,1000M-half,1000M-full 

/interface bridge port
add bridge=bridge1 hw=no interface=ether3
add bridge=bridge1 hw=no interface=ether4
add bridge=bridge1 interface=wlan1
add bridge=bridge1 hw=no interface=ether1
add bridge=bridge1 hw=no interface=ether2
/interface bridge settings
set use-ip-firewall=yes

/ip address
add address=10.0.0.250/24 interface=bridge1 network=10.0.0.0

/ip route
add distance=1 gateway=10.0.0.1

soudn't I get higher resualt ?
** I have check with another comoputer connected to ethernet on the AP side - I get ~100MBps (so the internet speed is good )
 
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Re: Slow wireless speed on Mikrotik RB912UAG-2HPnD

Sun Aug 01, 2021 2:41 pm

From what I deduce from your config, upgrade the device, reset the config to default, and reconfigure from start.

OLD code

/interface bridge
add fast-forward=no name=bridge1
/interface ethernet
set [ find default-name=ether1 ] advertise=10M-half,10M-full,100M-half,100M-full,1000M-half,1000M-full
set [ find default-name=ether2 ] advertise=10M-half,10M-full,100M-half,100M-full,1000M-half,1000M-full
set [ find default-name=ether3 ] advertise=10M-half,10M-full,100M-half,100M-full,1000M-half,1000M-full
set [ find default-name=ether4 ] advertise=10M-half,10M-full,100M-half,100M-full,1000M-half,1000M-full

/interface bridge port
add bridge=bridge1 hw=no interface=ether3
add bridge=bridge1 hw=no interface=ether4
add bridge=bridge1 interface=wlan1
add bridge=bridge1 hw=no interface=ether1
add bridge=bridge1 hw=no interface=ether2
/interface bridge settings
set use-ip-firewall=yes
 
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Re: Slow wireless speed on Mikrotik RB912UAG-2HPnD

Sun Aug 01, 2021 3:01 pm

If you can use a smartphone with 2 strams (2 antennas inside) you can reach 100Mbit/s when the link is 300Mbps-40Mhz/2S/SGI
I dont think that the number of streams depends on the number of the antennas on modern MIMO...
 
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Re: Slow wireless speed on Mikrotik RB912UAG-2HPnD

Sun Aug 01, 2021 3:19 pm

So what?
You can reach to have multiple strams (at same frequency) with one device that have only one antenna?
 
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Re: Slow wireless speed on Mikrotik RB912UAG-2HPnD

Sun Aug 01, 2021 3:39 pm

Actually am wrong, the number of streams depends on the number of chains... And each antenna has its own chains...

So 2 chains means 2 antennas...

Correct me if am wrong...
Last edited by Zacharias on Tue Aug 03, 2021 6:35 pm, edited 1 time in total.
 
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Re: Slow wireless speed on Mikrotik RB912UAG-2HPnD

Mon Aug 02, 2021 9:53 am

Yes, you are rigth now.
 
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Re: Slow wireless speed on Mikrotik RB912UAG-2HPnD

Mon Aug 02, 2021 12:09 pm

I have change the config like you told me
but I can see the comouter unable to sync on 1G on the ethernet - can this be the reason ?

******

sorry, sorry, sorry
I made a mistake and the issue (now) is for "RouterBOARD 941-2nD" ,and I see that the max ethernet is 100Mbps for this ehternet on this device.

so maybe also after changing all the setting you told me - I will never be able to get to the desire speed? hardware issue ?

Thanks ,
 
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Re: Slow wireless speed on Mikrotik RB912UAG-2HPnD

Mon Aug 02, 2021 2:57 pm

The SMIPS series are the worst device on mikrotik market...
Do not have any gigabit port,
and if on export (compact) this is present:
/interface ethernet
set [ find default-name=XXXX ] advertise=10M-half,10M-full,100M-half,100M-full,1000M-half,1000M-full
mean that port work only on 100Mbps (and is useless ,1000M-half,1000M-full)
 
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Re: Slow wireless speed on Mikrotik RB912UAG-2HPnD

Tue Aug 03, 2021 9:45 am

I have this 2 routers for 3 years + now
didn't have any problem with them - until now (and also the problem is jsut the download speed)

so nothing I can do about the download speed?

this is the MAX those devices can do ?

***
what would you recommand insteed? I have 2 devices:
1. AP bridge , connected to ADSL modem
2. wireless bridge with ethernet for 2 computers
the distance is 8 meter , LOS , in home\office environment
no more then 6 wireless devices connected at the same time
and whould I need to change both of them ?


Thanks ,

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