CAP XL AC cannot exceed 350mb speed at 5Ghz

[erdemefe]

Hello everone,

I have RB4011 router in my home as main router and 2 CAP AC XL for upstairs and downstairs. They connected the rb4011 with directly. My ISP provides 1000/100mbps. i can reach 950mbps download speed with cable.
I enabled the capsman it recognize the radios. Even though I set 80 mhz bandwidth and am only 50 cm away from the access point, the download speed does not exceed 350mbps. My tested clients are iphone 14 pro max and Asus B650E-F Gaming builtin wifi.What is the problem? Currently there is more than one channel in 5ghz channels, but the result did not change even when I try only one channel.

My Capsman config like this:

2023-12-21 17:25:15 by RouterOS 7.12.1

software id = WDL2-L484

model = RB4011iGS+

serial number = B8F30B0E63D6

/caps-man channel
add band=2ghz-b/g/n control-channel-width=20mhz frequency=2462 name=ch11
add band=5ghz-n/ac control-channel-width=20mhz extension-channel=eeCe frequency=5540 name=ch106
add band=5ghz-n/ac control-channel-width=20mhz extension-channel=eCee frequency=5280 name=ch58
add band=5ghz-n/ac control-channel-width=20mhz extension-channel=Ceee frequency=5580 name=ch122
add band=5ghz-n/ac control-channel-width=20mhz extension-channel=eeCe frequency=5220,5300,5540 name=“ch42, ch58, ch106”
/caps-man datapath
add bridge=bridge name=datapath1
/caps-man security
add authentication-types=wpa2-psk encryption=aes-ccm name=home_key
add authentication-types=wpa2-psk encryption=aes-ccm name=guest_key
add authentication-types=wpa2-psk encryption=aes-ccm name=smart_key
/caps-man configuration
add channel=ch11 country=turkey datapath=datapath1 installation=any mode=ap name=home_2.4 security=home_key ssid=“EFE’s Home”
add channel=ch11 country=turkey datapath=datapath1 installation=any mode=ap name=guest_2.4 security=guest_key ssid=“EFE’s Home Guest”
add channel=ch11 country=turkey datapath=datapath1 installation=any mode=ap name=smart_2.4 security=smart_key ssid=“EFE’s Smart Home”
add channel=“ch42, ch58, ch106” country=turkey datapath=datapath1 installation=any mode=ap name=home_5 security=home_key ssid=“EFE’s Home”
add channel=“ch42, ch58, ch106” country=turkey datapath=datapath1 installation=any mode=ap name=guest_5 security=guest_key ssid=“EFE’s Home Guest”
/caps-man manager
set enabled=yes
/caps-man provisioning
add action=create-dynamic-enabled hw-supported-modes=gn master-configuration=home_2.4 name-format=prefix name-prefix=2.4g_ slave-configurations=smart_2.4,guest_2.4
add action=create-dynamic-enabled hw-supported-modes=ac master-configuration=home_5 name-format=prefix name-prefix=5g_ slave-configurations=guest_5

[whatever]

If you want faster speed you have to upgrade to 7.13+ and migrate to the new wifi-qcom-ac driver.

[mkx]

If you decide to follow suggestion by @whatever, be prepared for a couple of caveats:

1. cAP ac xl comes with 16MB flash storage, which is very tight (on ARM architecture) for 7.13. You may run into “flash storage full” issues (but keep fingers crossed not to)
2. there are a few manual steps when replacing wireless package with wifi-qcom-ac (read WiFi manual to prepare in advance)
3. you’ll have to reconfigure settings on capsman on RB4011 (wave2/wifi capsman settings are under /interface/wifi)

Good thing: after you get the new capsman working as desired, you will be able to remove wireless package from RB4011 and free around 2MB of flash storage. But don’t do it until you get new capsman working, after removing wireless package you’ll loose /capsman settings as well).

[erdemefe]

If you decide to follow suggestion by @whatever, be prepared for a couple of caveats:

1. cAP ac xl comes with 16MB flash storage, which is very tight (on ARM architecture) for 7.13. You may run into “flash storage full” issues (but keep fingers crossed not to)
2. there are a few manual steps when replacing wireless package with wifi-qcom-ac (read WiFi manual to prepare in advance)
3. you’ll have to reconfigure settings on capsman on RB4011 (wave2/wifi capsman settings are under /interface/wifi)

Good thing: after you get the new capsman working as desired, you will be able to remove wireless package from RB4011 and free around 2MB of flash storage. But don’t do it until you get new capsman working, after removing wireless package you’ll loose /capsman settings as well).

thank you @mkx and @whatever

I installed the 7.13 firmware for both RB4011 and CAP AC XL, and configured capsman and cap. i configured new drivers CAPSMAN. Although CAPSMAN detect The Remote CAP’s does not recognize radios. What is the problem?

CAPSMAN Config is;

# 2023-12-26 10:33:56 by RouterOS 7.13
# software id = WDL2-L484
#
# model = RB4011iGS+
# serial number = B8F30B0E63D6
/interface wifi channel
add band=2ghz-n disabled=no frequency=2462 name=ch11 width=20mhz
add band=5ghz-ac disabled=no frequency=5220,5300,5540 name=ch42,ch58,ch106 width=20/40/80mhz
/interface wifi datapath
add bridge=bridge disabled=no interface-list=LAN name=datapath1
/interface wifi security
add authentication-types=wpa2-psk disabled=no name=guest_key
add authentication-types=wpa2-psk disabled=no name=home_key
add authentication-types=wpa2-psk disabled=no name=smart_key
/interface wifi configuration
add channel=ch11 country=Turkey datapath=datapath1 disabled=no hide-ssid=no mode=ap name=guest_2.4 security=guest_key ssid="EFE's Home Guest"
add channel=ch11 country=Turkey datapath=datapath1 disabled=no hide-ssid=no mode=ap name=home_2.4 security=home_key ssid="EFE's Home"
add channel=ch11 country=Turkey datapath=datapath1 disabled=no hide-ssid=no mode=ap name=smart_2.4 security=smart_key ssid="EFE's Smart Home"
add channel=ch42,ch58,ch106 country=Turkey datapath=datapath1 disabled=no name=guest_5 security=guest_key ssid="EFE's Home Guest"
add channel=ch42,ch58,ch106 country=Turkey datapath=datapath1 disabled=no name=home_5 security=home_key ssid="EFE's Home"
/interface wifi capsman
set enabled=yes package-path="" require-peer-certificate=no upgrade-policy=none
/interface wifi provisioning
add action=create-dynamic-enabled address-ranges=- disabled=no master-configuration=home_5 name-format=5G radio-mac=18:FD:74:15:76:60 slave-configurations=guest_5 supported-bands=5ghz-ac
add action=create-dynamic-enabled disabled=no master-configuration=home_2.4 name-format=2.4 radio-mac=18:FD:74:15:62:A0 slave-configurations=guest_2.4,smart_2.4 supported-bands=2ghz-n,2ghz-g

CAP Config is;

# 2023-12-26 10:35:19 by RouterOS 7.13
# software id = 6U7K-ZXXE
#
# model = RBcAPGi-5acD2nD
# serial number = HCK087M3CT0
/interface wifi cap
set certificate=request discovery-interfaces=bridgeLocal enabled=yes

[mkx]

I installed the 7.13 firmware for both RB4011 and CAP AC XL, and configured capsman and cap. i configured new drivers CAPSMAN. Although CAPSMAN detect The Remote CAP’s does not recognize radios. What is the problem?

Did you uninstall wireless and install wifi-qcom-ac package on cAP? It’s manual work, it won’t be done automatically …

Is the cAP config you showed full config? I can hardly believe that.

[whatever]

Did you have a look at the official video guides?
New driver package: https://youtu.be/AkBIQxi-VKs
New capsman: https://youtu.be/37aff6d14Xk

Once you have migrated to new wifi driver, you can set the “manager” property to capsman on the cap interfaces.

[erdemefe]

thanks for replies.
I watched videos and changed drivers with wifi-qcom-ac and reconfigure capsman. but my download speed did not above 400-410mbps again. I tried different channels but result did not change.

i was monitoring CPU usage and memory while speedtest running. cpu usage was max %50 and free ram was min 32mb. when i forced my clients wifi driver only AC bands i see 450mbps. But these result still so far from mikrotiks promised results. It should be near to 700-800mbps. The teorical speed 833mbps for 80mhz bw at 5Ghz.

[Hominidae]

I watched videos and changed drivers with wifi-qcom-ac and reconfigure capsman. but my download speed did not above 400-410mbps again. I tried different channels but result did not change.

…this is on a cap-ac, so the non xl version: http://forum.mikrotik.com/t/v7-13beta-testing-is-released/171132/377
I don’t see a problem with MT at this point, hence.

[Ca6ko]

It should be near to 700-800mbps.

That’s not a correct statement

The teorical speed 833mbps for 80mhz bw at 5Ghz.

This is not a correct statement.
You are mistaken in terms and definitions.
833 is not a theoretical speed, but a channel speed. In this case, the data rate is usually 1/2. 420mbps is the actual data rate for this device.

[erdemefe]

So, as I understood everything is ok.

But there is one more thing

Although the CAP XL AC broadcasts 2.4 and 5Ghz signals neither 2.4GHz LED nor 5GHz LED blinking. They are solid off in wifi-qcom-ac driver

[erlinden]

Although the CAP XL AC broadcasts 2.4 and 5Ghz signals neither 2.4GHz LED nor 5GHz LED blinking. They are solid off in wifi-qcom-ac driver

Can confirm, mine are not working as well.

[bpwl]

833 is not a theoretical speed, but a channel speed. In this case, the data rate is usually 1/2. 420mbps is the actual data rate for this device.

(*) … interface rates are not the net data rate. There are a lot of mandatory inter-transmission gaps in 802.11 wifi , The higher the interface rate , the higher the relative impact of those GAPS.
Small transmission blocks (A-MPDU) , make that impact (lossed air-time) very important. The MT WLAN driver has limited transmission block sizes. The new wifi drivers don’t have that size limitation.
There are free spreadsheets to calculate that inter-gap impact : http://forum.mikrotik.com/t/help-mikrotik-capsman-wireless-download-speed-max-200mb-but-pcs-mobiles-link-speed-is-866mbps/142677/1
http://forum.mikrotik.com/t/wifiwave2-expected-performance/160075/1