have time for a quick review of wifi on cap ac?

hello

it seem sometime i have higher upload than download depending where i am in the house, mostly on the 2.4 band
do you see any issue with this config? if anything missing, ask

# dec/07/2020 13:43:46 by RouterOS 6.47.7
# model = RouterBOARD cAP Gi-5acD2nD
/interface wireless
set [ find default-name=wlan1 ] antenna-gain=0 band=2ghz-g/n channel-width=20/40mhz-XX country=canada2 default-forwarding=no disabled=no distance=indoors frequency=\
    2437 installation=indoor l2mtu=1598 mode=ap-bridge name=interface-WLAN1 ssid=MikroTik-2.4-P station-roaming=enabled wireless-protocol=802.11 wps-mode=disabled
    
set [ find default-name=wlan2 ] antenna-gain=0 band=5ghz-n/ac bridge-mode=disabled channel-width=20/40/80mhz-XXXX country=canada2 default-forwarding=no disabled=no \
    distance=indoors installation=indoor l2mtu=1598 mode=ap-bridge name=interface-WLAN2 ssid=MikroTik-5-P station-roaming=enabled wireless-protocol=802.11 wps-mode=\
    disabled
    
/interface bridge
add admin-mac=xxx auto-mac=no name=bridge-WLAN protocol-mode=none

/interface ethernet
set [ find default-name=ether2 ] name=interface-LAN1 poe-out=off
set [ find default-name=ether1 ] name=interface-WAN

/interface wireless security-profiles
set [ find default=yes ] authentication-types=wpa2-psk disable-pmkid=yes eap-methods="" mode=dynamic-keys supplicant-identity=MikroTik

/interface bridge port
add bridge=bridge-WLAN hw=no interface=interface-WAN
add bridge=bridge-WLAN interface=interface-WLAN1
add bridge=bridge-WLAN interface=interface-WLAN2
add bridge=bridge-WLAN hw=no interface=interface-LAN1

what config? only see a few lines
/export hide-sensitive file=anynameyouwish

here it is, i didnt think other stuff were needed other that wifi config

  MMM      MMM       KKK                          TTTTTTTTTTT      KKK
  MMMM    MMMM       KKK                          TTTTTTTTTTT      KKK
  MMM MMMM MMM  III  KKK  KKK  RRRRRR     OOOOOO      TTT     III  KKK  KKK
  MMM  MM  MMM  III  KKKKK     RRR  RRR  OOO  OOO     TTT     III  KKKKK
  MMM      MMM  III  KKK KKK   RRRRRR    OOO  OOO     TTT     III  KKK KKK
  MMM      MMM  III  KKK  KKK  RRR  RRR   OOOOOO      TTT     III  KKK  KKK

  MikroTik RouterOS 6.47.7 (c) 1999-2020       http://www.mikrotik.com/

[?]             Gives the list of available commands
command [?]     Gives help on the command and list of arguments

[Tab]           Completes the command/word. If the input is ambiguous,
                a second [Tab] gives possible options

/               Move up to base level
..              Move up one level
/command        Use command at the base level
[admin@MikroTik-W] > export hide-sensitive 
# dec/07/2020 14:20:59 by RouterOS 6.47.7
# software id = 95D0-Z197
#
# model = RouterBOARD cAP Gi-5acD2nD
/interface wireless
set [ find default-name=wlan1 ] antenna-gain=0 band=2ghz-g/n channel-width=20/40mhz-XX country=canada2 default-forwarding=no disabled=no distance=indoors frequency=\
    2437 installation=indoor l2mtu=1598 mode=ap-bridge name=interface-WLAN1 ssid=MikroTik-2.4-P station-roaming=enabled wireless-protocol=802.11 wps-mode=disabled
set [ find default-name=wlan2 ] antenna-gain=0 band=5ghz-n/ac bridge-mode=disabled channel-width=20/40/80mhz-XXXX country=canada2 default-forwarding=no disabled=no \
    distance=indoors installation=indoor l2mtu=1598 mode=ap-bridge name=interface-WLAN2 ssid=MikroTik-5-P station-roaming=enabled wireless-protocol=802.11 wps-mode=\
    disabled
/interface bridge
add admin-mac=xxx auto-mac=no name=bridge-WLAN protocol-mode=none
/interface ethernet
set [ find default-name=ether2 ] name=interface-LAN1 poe-out=off
set [ find default-name=ether1 ] name=interface-WAN
/interface list
add exclude=dynamic name=discover
/interface wireless security-profiles
set [ find default=yes ] authentication-types=wpa2-psk disable-pmkid=yes eap-methods="" mode=dynamic-keys supplicant-identity=MikroTik
/snmp community
set [ find default=yes ] disabled=yes
/user group
set full policy=local,telnet,ssh,ftp,reboot,read,write,policy,test,winbox,password,web,sniff,sensitive,api,romon,dude,tikapp
/interface bridge port
add bridge=bridge-WLAN hw=no interface=interface-WAN
add bridge=bridge-WLAN interface=interface-WLAN1
add bridge=bridge-WLAN interface=interface-WLAN2
add bridge=bridge-WLAN hw=no interface=interface-LAN1
/interface bridge settings
set use-ip-firewall=yes
/ip firewall connection tracking
set enabled=yes
/ip neighbor discovery-settings
set discover-interface-list=none
/ip settings
set rp-filter=strict
/ip cloud
set update-time=no
/ip dhcp-client
add disabled=no interface=bridge-WLAN
/ip firewall service-port
set ftp disabled=yes
set tftp disabled=yes
set irc disabled=yes
set h323 disabled=yes
set sip disabled=yes
set pptp disabled=yes
set udplite disabled=yes
set dccp disabled=yes
set sctp disabled=yes
/ip service
set telnet disabled=yes
set ftp disabled=yes
set www disabled=yes
set ssh disabled=yes
set api disabled=yes
set api-ssl disabled=yes
/ip smb
set allow-guests=no
/ip smb shares
set [ find default=yes ] disabled=yes
/ip ssh
set allow-none-crypto=yes forwarding-enabled=remote
/system clock
set time-zone-autodetect=no time-zone-name=America/Toronto
/system identity
set name=MikroTik-W
/system ntp client
set enabled=yes
/system routerboard settings
set silent-boot=yes
/tool bandwidth-server
set enabled=no
/tool mac-server ping
set enabled=no
[admin@MikroTik-W] >

Some thoughts …

  • higher upload than download: How do you test? It happens quite often if measured via internet speed servers. It’s not OK that it happens, but the test chain is too long to differentiate causes.

  • using “channel-width=20/40mhz-XX” and “frequency=2437” gives your device the full right to pick the wrong frequency, as it can take any channel. There is seldom lack of interference if 40MHz wide channels are used in 2.4 GHz. The initial selection of the Mikrotik cannot be trusted, as this just happens with the RF spectrum around in a split second. Check and measure the RF spectrum (“Freq Used”, “Snooper”) for a while and do the selection yourselves. Maybe you are lucky to be able to select 40MHz Ce or eC. Normally we are already happy with a clean 20 MHz wide channel.

  • Check the information in the wireless “Registration” while wondering around and doing some up- or download. Check the values for Rx Rate and TX Rate (things like “144Mbps-20MHz/2S/SGI”, the PHY rate) , and the signal strength, SNR and CCQ. (CCQ is a few seconds delayed as it is averaged). Those are the “wifi” performance indicators. As the signal strength gets lower, you will see the CCQ go lower and also the PHY rates. If CCQ or PHY rate go lower at high signal strength something else than being too far away from the AP is happening. (Too strong AP power, reflection in a corner or metal of other object, interference from other devices (should have been excluded by the previous step)) , …)