Cap AC wifi speed is terrible bad.

ksuuk · April 22, 2020, 9:15am

Hi,

I searched and read Cap AP threads and seems it either works or not. Mine is not.

Situation, private house, 4G+ Huawei B535 router, only 2,4 GHz enabled, Huawei > LAN > RB750GL > Engenius EAP300. Speed was 20-25 down/up. As EAP supports only 100MB LAN and 2,4 GHz, I decided to change it to Cap AC. Configured Cap AC it as router, Huawei > eth1 (wan), eth2 (lan) > 1G switch > Lenovo X230. Huawei is located at the second floor, about 8 m from where I test (I’m the only user). Cap AC is located 3 m away.

Using LAN (true Cap AC) or Huawei I get 50-70 down and 35-45 up, no matter, LAN or WiFi, speed is same.
Using Cap AC, I can barely get 15-20 down and strangely 30-40 up.

This is even worst than Engenius can do, even more, my very old Buffalo WHR-HP-G54 can do better.
Firmware 6.46.5, current (I tried all kind settings, no luck) conf is:

/interface wireless
set [ find default-name=wlan1 ] antenna-gain=2 band=2ghz-g/n channel-width=20/40mhz-Ce country=estonia disabled=no frequency=auto mode=ap-bridge security-profile=xb ssid=test wps-mode=disabled

Do the Mikrotik WiFi must be really mikro wifi? This kind of product should not be sold at all!

normis · April 22, 2020, 9:19am

Before we look into your 2GHz problem … Why are you not using 5GHz and ac standard? This product can easily reach 500-600Mbit over wifi.

ksuuk · April 22, 2020, 9:25am

As 5GHz ends about 3 meters from AP, so no use for me at all .

And as I wanted to be sure that 2,4GHz is getting same speed, as it does from Huawei.

normis · April 22, 2020, 9:53am

5 meters, sounds hard to believe. Are you sure the client device is not the issue? 5Ghz should work fine even on opposite end of your building, with phone as client. Try to test other devices connected to it.

ksuuk · April 22, 2020, 10:12am

Ok, I probably I exaggerated a bit about 5Ghz coverage, but let’s concentrate the 2,4 Ghz issue. How the fix the 2,4GHz speed. I tested with multiple devices, they all give same result, Huawei & 2,4GHz = all OK, Cap AC & 2,4GHz = all NOK.

heidarren · April 22, 2020, 10:44am

For 2.4GHz, try use only 20MHz instead of 20/40, use wpa2 aes only, set indoor, basic rate 12/24, supported rate 12~54, enable WMM. I got a pretty good speed like about 80~95mbps, but it really depends on your environment and client

raffav · April 22, 2020, 11:29am

I really would like to get this speed over 5g using capsman I tried all settings possible

My average is 190-230 either using speedtest over Internet or local file transfer in my network

My client is tplink ac 1900 and I’m 2 Mt from the ap

Sent from my Moto Z3 Play using Tapatalk

normis · April 22, 2020, 11:38am

please don’t hijack another persons topic, make your own. capsman will always be a little slower than without.

ksuuk · April 22, 2020, 3:10pm

Made some more tests, laptop uses Intel Centrino Advanced-N 6205 AGN dual-band 802.11a/g/n Wi-Fi adapter that delivers speed up to 300 Mbps. Installed FileZilla FTP server into laptop and connected from other computer via 1G LAN and uploaded/downloaded 1,8GB file, and speed is about 30MB up/down.

So I have eliminated all aspects except Cap AC. So Microtik, the Cap AC is not what is should be based spec -s https://mikrotik.com/product/cap_ac

Ans as I see, that also official support is silent (they acknowledge the problem), so how to proceed as I need product that works. Mikrotik - can I send it You and get some other, better model?

erlinden · April 22, 2020, 3:23pm

MikroTik is great stuff and it requires a learning curve. There community is great and really active. For any user from beginner to master.

Good, in regards to your problem: your settings require optimization. Already mentioned by @heidarren there are some basic settings that have to be obeyed.
In regards to your remark about the performance “and speed is about 30MB up/down”. This is practically impossible on the 2G radio. Sounds to me like the test was performed on the 5G radio.

If you want some help, please first start by sharing your configuration (/export hide-sensitive). From thereon we can advice you.

Ans as I see, that also official support is silent, so how to proceed as I need product that works. Mikrotik - can I send it You and get some other, better model?

What official support are you referring to? What kind of support are you expecting? Also the more expensive models require configuration…

ksuuk · April 22, 2020, 3:49pm

Correction MB > Mbps, so I get about 3 Mbps, which is very low rate. Like I said before, only 2,4Ghz is active, so what more to optimize? Current full (the wifi part was in my first post also) conf is:

/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
add authentication-types=wpa2-psk group-key-update=1h management-protection=allowed mode=dynamic-keys name=xb supplicant-identity=MikroTik wpa-pre-shared-key=xb wpa2-pre-shared-key=
xb
/interface wireless
set [ find default-name=wlan1 ] antenna-gain=0 band=2ghz-g/n basic-rates-a/g=12Mbps,24Mbps basic-rates-b=“” country=no_country_set disabled=no frequency-mode=manual-txpower installation=
indoor mode=ap-bridge nv2-cell-radius=10 nv2-downlink-ratio=70 preamble-mode=short rate-set=configured security-profile=xb ssid=xb supported-rates-a/g=
12Mbps,18Mbps,24Mbps,36Mbps,48Mbps,54Mbps supported-rates-b=“” tx-power=23 tx-power-mode=all-rates-fixed wmm-support=enabled wps-mode=disabled

I played with tx-power and nv2-downlink-ratio, without any positive result.

BTW, I have used Mikrotik products about 7 years, and with every new product I hope, that now all is OK. Last failure was hAP ac lite TC, same problem, low speed, bad 5GHz coverage. Seems nothing is improved.

kalamaja · April 22, 2020, 4:47pm

After 7 years of thinking MT does everything wrong, it would be right time to invest in MTCNA and MTCWE courses to finally understand how WiFi (and MT) works. There are several really good MT lecturers in Estonia.

For free beer when we meet I give you this standard configuration. Don't mess with things you don't understand. I don't know exact numbers for 2GHz, but 5GHZ AC runs easily 40-50MB/sec downloads:

2.4GHz configuration: SSID: wifi2ghz, WPS disabled, security profile: turva1, only 802.11N enabled.

/interface wireless set [ find default-name=wlan1 ] band=2ghz-onlyn channel-width=20/40mhz-XX country=estonia
disabled=no distance=indoors frequency=auto frequency-mode=regulatory-domain installation=indoor mode=ap-bridge
antenna-gain=2 security-profile=turva1 ssid=wifi2ghz wireless-protocol=802.11 wps-mode=disabled adaptive-noise-immunity=ap-and-client-mode

5GHz configuration: SSID: wifi5ghz, WPS disabled, security profile: turva1, only 802.11AC and N enabled.

/interface wireless set [ find default-name=wlan2 ] band=5ghz-n/ac channel-width=20/40/80mhz-XXXX country=estonia
disabled=no distance=indoors frequency=auto frequency-mode=regulatory-domain installation=indoor mode=ap-bridge
antenna-gain=3 security-profile=turva1 ssid=wifi5ghz wireless-protocol=802.11 wps-mode=disabled adaptive-noise-immunity=ap-and-client-mode

LSan83 · April 22, 2020, 6:07pm

/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
add > authentication-types=wpa2-psk > group-key-update=1h management-protection=allowed mode=dynamic-keys name=xb supplicant-identity=MikroTik wpa-pre-shared-key=xb wpa2-pre-shared-key=
xb
/interface wireless
set [ find default-name=wlan1 ] antenna-gain=0 > band=2ghz-g/n > basic-rates-a/g=12Mbps,24Mbps basic-rates-b=“” country=no_country_set disabled=no frequency-mode=manual-txpower installation=
indoor mode=ap-bridge nv2-cell-radius=10 nv2-downlink-ratio=70 preamble-mode=short rate-set=configured security-profile=xb ssid=xb supported-rates-a/g=
12Mbps,18Mbps,24Mbps,36Mbps,48Mbps,54Mbps supported-rates-b=“” tx-power=23 tx-power-mode=all-rates-fixed wmm-support=enabled wps-mode=disabled

Never use wpa2-psk tkip —> change it to only wpa2-psk aes and 802.11n only.
WPA2-PSK TKIP use too much cpu and slow down everything.

I never go under 60 Mbits with only 20Mhz Channel (for less interference from near APs).
Your wifi client (Intel 6205) is a 2x2 and can do better.

ksuuk · April 22, 2020, 6:16pm

Well, As You see, every users have his own settings, claiming that these are the best, so which to choose? However, I’did import these settings now and 2,4GHz FTP download = 2,9-3,0 MB/sec 5Ghz FTP download = 4,5-5,0 MB/sec, LAN FTP download 90-92 Mb/sec. So what next?

ksuuk · April 22, 2020, 6:18pm

But I’m not using tkip, I’m using aes only:
mode=dynamic-keys authentication-types=wpa2-psk unicast-ciphers=aes-ccm group-ciphers=aes-ccm

And about only 20Mhz channel, tried this also, no difference, but I can try again.

LSan83 · April 22, 2020, 6:24pm

In the last try a full reset of the device. I had a few problem with some used wap ac (with same configuration of other wap ac i have) and the reset has resolved all of them.

maigonis · April 22, 2020, 7:41pm

You have checked channel and interference? Download WiFi analyzer and check, search online what can interfere whit wifi signal - microwave, Bluetooth, wireless mice and keyboard etc.

If you can use channels 1,6,11 on 2.4GHz.

ksuuk · April 22, 2020, 7:48pm

Using - /system reset-configuration keep-users=no no-defaults=yes skip-backup=yes

Does this wipe everything?

raffav · April 22, 2020, 7:56pm

Yes
but why you do not post your config first maybe it just some misconfiguration
export file=conifg hide-sensitive this will remove all password from the file

ksuuk · April 22, 2020, 8:21pm

I didn’t want to bother, but here is the config:

# apr/22/2020 22:14:28 by RouterOS 6.46.5
# software id = TUUQ-A81D
#
# model = RouterBOARD cAP Gi-5acD2nD
# serial number = 81CF08D00F71
/interface ethernet
set [ find default-name=ether1 ] name=eth1-wan
set [ find default-name=ether2 ] name=eth2-lan
/interface bridge
add admin-mac=CC:2D:E0:D7:78:A4 auto-mac=no name=bridge-lan
/interface list
add comment=defconf name=WAN
add comment=defconf name=LAN
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
add authentication-types=wpa2-psk group-key-update=1h management-protection=\
    allowed mode=dynamic-keys name=xb supplicant-identity=MikroTik
/interface wireless
set [ find default-name=wlan1 ] band=2ghz-g/n basic-rates-b="" country=\
    estonia disabled=no distance=indoors installation=indoor mode=ap-bridge \
    preamble-mode=short rate-set=configured security-profile=xb ssid=xb \
    supported-rates-b="" wireless-protocol=802.11 wmm-support=enabled \
    wps-mode=disabled
set [ find default-name=wlan2 ] band=5ghz-a/n/ac channel-width=\
    20/40/80mhz-XXXX country=estonia disabled=no distance=indoors \
    installation=indoor mode=ap-bridge security-profile=xb ssid=xb \
    wireless-protocol=802.11 wmm-support=enabled wps-mode=disabled
/ip pool
add name=dhcp_pool ranges=192.168.30.100-192.168.30.130
/ip dhcp-server
add address-pool=dhcp_pool disabled=no interface=bridge-lan lease-time=1d10m \
    name=dhcp-server
/interface bridge port
add bridge=bridge-lan interface=eth2-lan
add bridge=bridge-lan interface=wlan1
add bridge=bridge-lan interface=wlan2
/ip neighbor discovery-settings
set discover-interface-list=LAN
/interface list member
add comment=defconf interface=bridge-lan list=LAN
add comment=defconf interface=eth1-wan list=WAN
/ip address
add address=192.168.30.1/24 interface=bridge-lan network=192.168.30.0
add address=192.168.8.252/24 interface=eth1-wan network=192.168.8.0
/ip dhcp-client
add comment=defconf disabled=no interface=eth1-wan
/ip dhcp-server network
add address=192.168.30.0/24 dns-server=8.8.8.8,8.8.4.4 gateway=192.168.30.1 \
    netmask=24 ntp-server=216.239.35.4,216.239.35.8
/ip dns
set allow-remote-requests=yes
/ip dns static
add address=192.168.88.1 comment=defconf name=router.lan
/ip firewall filter
add action=accept chain=input comment=\
    "defconf: accept established,related,untracked" connection-state=\
    established,related,untracked
add action=drop chain=input comment="defconf: drop invalid" connection-state=\
    invalid
add action=accept chain=input comment="defconf: accept ICMP" protocol=icmp
add action=accept chain=input comment=\
    "defconf: accept to local loopback (for CAPsMAN)" dst-address=127.0.0.1
add action=drop chain=input comment="defconf: drop all not coming from LAN" \
    in-interface-list=!LAN
add action=accept chain=forward comment="defconf: accept in ipsec policy" \
    ipsec-policy=in,ipsec
add action=accept chain=forward comment="defconf: accept out ipsec policy" \
    ipsec-policy=out,ipsec
add action=fasttrack-connection chain=forward comment="defconf: fasttrack" \
    connection-state=established,related
add action=accept chain=forward comment=\
    "defconf: accept established,related, untracked" connection-state=\
    established,related,untracked
add action=drop chain=forward comment="defconf: drop invalid" \
    connection-state=invalid
add action=drop chain=forward comment=\
    "defconf: drop all from WAN not DSTNATed" connection-nat-state=!dstnat \
    connection-state=new in-interface-list=WAN
/ip firewall nat
add action=masquerade chain=srcnat comment="defconf: masquerade" \
    ipsec-policy=out,none out-interface-list=WAN
/ip route
add distance=1 gateway=192.168.8.1
/ip service
set telnet disabled=yes
/ip upnp
set enabled=yes
/system clock
set time-zone-name=Europe/Stockholm
/system ntp client
set enabled=yes primary-ntp=216.239.35.4 secondary-ntp=216.239.35.8
/system routerboard mode-button
set enabled=yes on-event=dark-mode
/tool graphing interface
add
add interface=eth1-wan
add interface=eth2-lan
add interface=wlan1
add interface=wlan2
add interface=bridge-lan
/tool mac-server
set allowed-interface-list=LAN
/tool mac-server mac-winbox
set allowed-interface-list=LAN