RB951-2n wireless issue

RouterOS Wireless Networking
1

Hello,

I bought RB951-2n a week ago and since that time tried to solve wireless issue: wi-fi station (laptop) very often lost connection or signal level becomes very low on station side, but normal from mikrotik device (see screenshot). I tried all combination: 802.11n only, g only, wpa2, wpa, without encryption - the result was the same. I don’t think this is a lack of ap power: distance is only 4m behind one wall. I tried to change a wi-fi adapter to external usb one (D-link DWA-140) also. The behavior is the same. Download speed is jumping from 100 to 600 kB/s.
My old device Dlink DAP-1160 works fine with all wifi-adapters.
The interesting thing: RB951-2n works perfect as wireless station with Dlink DAP-1160 in the same conditions and dinstance.
There are no other wireless ap around, so no interference.

RouterOS: 5.20
Mode: bridge
Log:
oct/11 23:54:55 wireless,info XX:XX:XX:XX:XX:XX@wlan1: connected
oct/11 23:58:07 wireless,debug wlan1: XX:XX:XX:XX:XX:XX1 attempts to associate
oct/11 23:58:07 wireless,info XX:XX:XX:XX:XX:XX@wlan1: reassociating
oct/11 23:58:07 wireless,info XX:XX:XX:XX:XX:XX@wlan1: disconnected, ok
oct/11 23:58:07 wireless,debug wlan1: XX:XX:XX:XX:XX:XX in local ACL, accept
oct/11 23:58:07 wireless,info XX:XX:XX:XX:XX:XX@wlan1: connected
mt2.png

2

Can you post /export compact

3 
#
/interface bridge
add l2mtu=1598 name=bridge1
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
add authentication-types=wpa-psk,wpa2-psk eap-methods=passthrough management-protection=allowed mode=dynamic-keys name=XXXXXXXX \
    supplicant-identity="" wpa-pre-shared-key=xxxxxxxx wpa2-pre-shared-key=xxxxxxxx
/interface wireless
set 0 band=2ghz-onlyg disabled=no distance=indoors frequency=2422 l2mtu=2290 mode=ap-bridge security-profile=hornet ssid=hornet \
    wireless-protocol=802.11
/interface bridge port
add bridge=bridge1 interface=ether2
add bridge=bridge1 interface=ether3
add bridge=bridge1 interface=ether4
add bridge=bridge1 interface=ether5
add bridge=bridge1 interface=wlan1
add bridge=bridge1
/interface wireless access-list
add interface=wlan1 mac-address=xx:xx:xx:xx:xx:xx
/ip address
add address=192.168.1.100/24 interface=bridge1
/ip dns
set allow-remote-requests=yes servers=8.8.8.8,8.8.4.4
/ip neighbor discovery
set wlan1 disabled=yes
/ip route
add distance=1 gateway=192.168.1.1
/ip service
set telnet disabled=yes
set ftp disabled=yes
set www disabled=yes
set winbox address=192.168.0.0/16
/system clock
set time-zone-name=Europe/Kiev
/system identity
set name=alpha
/system leds
set 0 interface=wlan1
/system logging
add topics=wireless,debug
/system ntp client
set enabled=yes mode=unicast primary-ntp=82.207.71.1 secondary-ntp=213.179.228.6
/system routerboard settings
set cpu-frequency=400MHz
/tool bandwidth-server
set authenticate=no enabled=n
4

I’ve upgraded the RouterOS to 5.21 and firmware to 3.0

cpu-frequency becomes 360MHz as in device specification, not 400. But wireless problems still exist.

5

Do you mean 360mhz or 300mhz?

6

That should have fixed the wireless issue completely, unless you have some completely different issue. Are you sure that it’s not because of environmental conditions or other factors?

7

I tried all combinations: 2 AP (dlink, mikrotik RB951-2n) and 3 stations (laptop Atheros built-in, laptop dlink usb, mikrotik RB951-2n as station). All works fine, except schemas where RB951-2n is AP. Maybe I need to set up fixed datarates?

8

Send the supout.rif to support@mikrotik.com and we will check how to improve your configuration

9

I am having a problem with my new RB9521-2n. The signal sometimes drops very low and disconects.
When i try to scan for other wireless access points through winbox (to set up the correct chanell), it shows just 2 APs, There is an other access point with “SSID:0101010100011”, its 10m away from the RB951-2n but it doesnt show that at all in the scan list, also i presume that there are more networks which it doesnt show. Why?

I have upgraded to 5.21, but still no luck.
wifi2.png
wireles_scan.PNG