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Re: hap ac^2 - Group Key Exchange timeout / No Reconnect possible

Fri Apr 05, 2019 1:58 pm

@Kerbia Would you please share your configration?
What type of clients are disconnecting and what is theire average signal strenght while this happens?
6.43.13 - Access Point Settings
I tried to do some finetuning for one Iphon XR that was basicly unusable. Still - the Group key exchange failures are around.
I hope you find something in the settings, because this drives me crazy since a year. I like RouterOs in general.
Every time a new update comes out plug in the hardware and give it a try again, before i can switch to any old devices lying around which are working flawlessly.
/interface bridge
add comment="Bridge - Hotspot / Gastnetz" name=bridge-vlan20
add comment="Bridge - Lokales Netzwerk" name=bridge-vlan40
/interface ethernet
set [ find default-name=ether1 ] speed=100Mbps
set [ find default-name=ether2 ] speed=100Mbps
/interface vlan
add comment="Hotspot / Gastnetz" interface=ether1 name=ether1-vlan20 vlan-id=20
add comment="Lokales Netzwerk" interface=ether1 name=ether1-vlan40 vlan-id=40
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
add authentication-types=wpa2-psk eap-methods="" group-key-update=1h mode=\
    dynamic-keys name=EG24/EG50 supplicant-identity=""
add authentication-types=wpa2-psk group-key-update=1h mode=dynamic-keys name=\
    EG24-Gast supplicant-identity=AP-EG
/interface wireless
set [ find default-name=wlan1 ] antenna-gain=2 band=2ghz-b/g/n comment=\
    "W-Lan - EG24" country=germany disabled=no frequency-mode=regulatory-domain \
    keepalive-frames=disabled mode=ap-bridge multicast-buffering=disabled name=\
    wlan2.4ghz-vlan40 preamble-mode=long security-profile=EG24/EG50 ssid=EG24 \
    wireless-protocol=802.11 wmm-support=enabled wps-mode=disabled
set [ find default-name=wlan2 ] antenna-gain=3 band=5ghz-a/n/ac comment=\
    "W-Lan - EG50" country=germany disabled=no frequency=5200 frequency-mode=\
    regulatory-domain keepalive-frames=disabled mode=ap-bridge \
    multicast-buffering=disabled name=wlan5.0ghz-vlan40 security-profile=\
    EG24/EG50 ssid=EG50 wireless-protocol=802.11 wmm-support=required wps-mode=\
/interface wireless manual-tx-power-table
set wlan2.4ghz-vlan40 comment="W-Lan - EG24"
set wlan5.0ghz-vlan40 comment="W-Lan - EG50"
/interface wireless nstreme
set wlan2.4ghz-vlan40 comment="W-Lan - EG24"
set wlan5.0ghz-vlan40 comment="W-Lan - EG50"
/interface wireless
add comment="W-Lan - Hotspot / Gastnetz" disabled=no keepalive-frames=disabled \
    mac-address=CE:2D:E0:1E:C4:CE master-interface=wlan2.4ghz-vlan40 \
    multicast-buffering=disabled name=wlan2.4ghz-vlan20 security-profile=\
    EG24-Gast ssid=EG24-Gast wds-cost-range=0 wds-default-cost=0 wmm-support=\
    required wps-mode=disabled
/interface wireless manual-tx-power-table
set wlan2.4ghz-vlan20 comment="W-Lan - Hotspot / Gastnetz"
/interface wireless nstreme
set wlan2.4ghz-vlan20 comment="W-Lan - Hotspot / Gastnetz"
/ip hotspot profile
set [ find default=yes ] html-directory=flash/hotspot
/interface bridge port
add bridge=bridge-vlan40 interface=ether1-vlan40
add bridge=bridge-vlan40 interface=ether2
add bridge=bridge-vlan40 interface=wlan2.4ghz-vlan40
add bridge=bridge-vlan40 interface=wlan5.0ghz-vlan40
add bridge=bridge-vlan20 interface=ether1-vlan20
add bridge=bridge-vlan20 interface=wlan2.4ghz-vlan20
/ip neighbor discovery-settings
set discover-interface-list=none
/ip address
add address= interface=ether1-vlan40 network=
/ip dns
set servers=
/ip route
add distance=1 gateway=
/ip service
set telnet disabled=yes
set ftp disabled=yes
set ssh disabled=yes
set api disabled=yes
set api-ssl disabled=yes
set trap-generators=temp-exception,temp-exception
/system clock
set time-zone-autodetect=no time-zone-name=Europe/Berlin
/system identity
set name=AP-EG
/system ntp client
set enabled=yes primary-ntp= secondary-ntp=
/system package update
set channel=long-term
/tool bandwidth-server
set enabled=no
/tool graphing interface
add interface=ether1-vlan20
add interface=ether1-vlan40
/tool mac-server
set allowed-interface-list=none
/tool mac-server mac-winbox
set allowed-interface-list=none
/tool mac-server ping
set enabled=no
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Re: hap ac^2 - Group Key Exchange timeout / No Reconnect possible

Thu May 02, 2019 10:31 am

That's a pretty weird issue (this one or something related to WiFi) cause everything is working fine but all of a sudden things start disconnecting one after the other.

Not sure how to find the root cause / contributing factor but my setup seems to be failing when Sonos speaker need to sync audio.
The TV is hook via a jack to one of the speaker and as soon as I turn on the TV (which is not connected to WiFi), signal must be reaching Sonos which syncs audio (even when jack source is not yet selected) and WiFi stars dropping connections of existing clients.

Need to give it some time and check it further but so far this is what I have been witnessing.

As the HAP AC^2 is hidden being the TV, I'm also wondering if the TV Itself could have a negative impact on WiFi / HAP...

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