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mcdoaev
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Joined: Mon Jul 04, 2022 7:17 am

Slow speed with hAP ac2 as AP

Mon Jul 04, 2022 7:54 am

Hello,

I live in a house with a basement and have fiber internet to an hAP ac in the basement and am using POE via cat 5e over ethernet 1 to power an hAP ac2 access point on the second floor. I get 80-100 Mbps up/down in close proximity to the hAP ac, but only 20 Mbps up/down in close proximity to the hAP ac2. I followed the instructions at https://wiki.mikrotik.com/wiki/Manual:M ... ireless_AP and viewtopic.php?t=143165. I've also tested with a random TP-Link router I had lying around (https://www.amazon.com/gp/product/B003Y5RYNY) and got the same poor results. Note that for now I have a different SSID for the hAP ac2, though I get the same results when the SSID is the same as the hAP ac.

In some rooms on the second floor, I get much better throughput from the hAP ac than the ac2 (60+ Mbps vs. 20). I realize the ac is triple chain vs. dual chain for the ac2, but I don't think this large of a difference is explained by that.

ETA: after some more digging, I realized that I hadn't enabled 802.11 a/n/ac in the ac2, nor multiple channel widths. I updated the band to 5Ghz-A/N/AC and channel width to 20/40/80 eCee (the hAP ac is on Ceee). However, after doing so I found the ac2 would reboot when pushed (i.e., when doing a speed test but not just browsing the Internet). I experimented with and without the dc power cable and I guess POE isn't enough (this is an older home, but it's still cat5e). With the dc power cable plugged in, I'm getting 100 Mbps in the bedroom farthest from the ac2 and 250-300 Mbps in the same room.

hAP ac config:

# jul/03/2022 22:49:11 by RouterOS 6.45.6
# software id = 12H5-JY9C
#
# model = RouterBOARD 962UiGS-5HacT2HnT
# serial number = ****
/interface bridge
add admin-mac=*** auto-mac=no comment=defconf name=bridge
/interface ethernet
set [ find default-name=ether1 ] speed=100Mbps
set [ find default-name=ether2 ] speed=100Mbps
set [ find default-name=ether3 ] speed=100Mbps
set [ find default-name=ether4 ] speed=100Mbps
set [ find default-name=ether5 ] speed=100Mbps
set [ find default-name=sfp1 ] advertise=\
10M-half,10M-full,100M-half,100M-full,1000M-half,1000M-full
/interface wireless
set [ find default-name=wlan1 ] band=2ghz-b/g/n channel-width=20/40mhz-Ce \
disabled=no distance=indoors frequency=auto mode=ap-bridge ssid=\
chief2-2ghz wireless-protocol=802.11 wps-mode=disabled
set [ find default-name=wlan2 ] band=5ghz-a/n/ac channel-width=\
20/40/80mhz-Ceee disabled=no distance=indoors frequency=auto mode=\
ap-bridge ssid=chief2 wireless-protocol=802.11 wps-mode=disabled
/interface list
add comment=defconf name=WAN
add comment=defconf name=LAN
/interface wireless security-profiles
set [ find default=yes ] authentication-types=wpa-psk,wpa2-psk mode=\
dynamic-keys supplicant-identity=MikroTik
add authentication-types=wpa-psk,wpa2-psk mode=dynamic-keys name=profile \
supplicant-identity=MikroTik
/interface wireless
add disabled=no mac-address=*** master-interface=wlan2 name=\
wlan3 security-profile=profile ssid=chief2_guest wps-mode=disabled
add disabled=no mac-address=*** master-interface=wlan1 name=\
wlan4 security-profile=profile ssid=chief2_guest wps-mode=disabled
/ip hotspot profile
set [ find default=yes ] html-directory=flash/hotspot
/ip pool
add name=dhcp ranges=192.168.88.10-192.168.88.254
add name=dhcp_pool1 ranges=192.168.88.2-192.168.88.254
/ip dhcp-server
add address-pool=dhcp_pool1 disabled=no interface=bridge name=dhcp1
/interface bridge filter
add action=drop chain=forward in-interface=wlan3
add action=drop chain=forward out-interface=wlan3
add action=drop chain=forward in-interface=wlan4
add action=drop chain=forward out-interface=wlan4
/interface bridge port
add bridge=bridge comment=defconf interface=ether2
add bridge=bridge comment=defconf interface=ether3
add bridge=bridge comment=defconf interface=ether4
add bridge=bridge comment=defconf interface=ether5
add bridge=bridge comment=defconf interface=sfp1
add bridge=bridge comment=defconf interface=wlan1
add bridge=bridge comment=defconf interface=wlan2
add bridge=bridge interface=wlan3
add bridge=bridge interface=wlan4
/ip neighbor discovery-settings
set discover-interface-list=LAN
/interface list member
add comment=defconf interface=bridge list=LAN
add comment=defconf interface=ether1 list=WAN
/ip address
add address=192.168.88.1/24 comment=defconf interface=ether2 network=\
192.168.88.0
/ip dhcp-client
add comment=defconf dhcp-options=hostname,clientid disabled=no interface=\
ether1 use-peer-dns=no
/ip dhcp-server lease
add address=192.168.88.236 client-id=1:0:11:32:18:c7:38 mac-address=\
*** server=dhcp1
/ip dhcp-server network
add address=192.168.88.0/24 comment=defconf dns-server=1.1.1.1,1.0.0.1 \
gateway=192.168.88.1
/ip dns
set allow-remote-requests=yes servers=1.1.1.1,1.0.0.1
/ip dns static
add address=192.168.88.1 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=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
add action=dst-nat chain=dstnat dst-port=22 in-interface=ether1 protocol=tcp \
to-addresses=192.168.88.236 to-ports=22
/ip ssh
set allow-none-crypto=yes forwarding-enabled=remote
/system clock
set time-zone-name=America/Denver
/tool mac-server
set allowed-interface-list=LAN
/tool mac-server mac-winbox
set allowed-interface-list=LAN


hAP ac2 config:

0 name="1234.rsc" type="script" size=999 creation-time=jul/03/2022 23:01:24
contents=
# jul/03/2022 23:01:23 by RouterOS 6.48.6
# software id = E0RZ-I73P
#
# model = RBD52G-5HacD2HnD
# serial number = HCH07KAV328
/interface bridge
add name=bridge1
/interface wireless
set [ find default-name=wlan1 ] disabled=no ssid=MikroTik
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
add authentication-types=wpa2-psk mode=dynamic-keys name=chief2 \
supplicant-identity=""
/interface wireless
set [ find default-name=wlan2 ] disabled=no frequency=auto mode=ap-bridge \
security-profile=chief2 ssid=chief2_2
/interface bridge port
add bridge=bridge1 interface=wlan1
add bridge=bridge1 interface=wlan2
add bridge=bridge1 interface=ether1
add bridge=bridge1 interface=ether2
add bridge=bridge1 interface=ether3
add bridge=bridge1 interface=ether4
add bridge=bridge1 interface=ether5
/ip dhcp-client
add disabled=no interface=bridge1
/system clock
set time-zone-name=America/Denver
/system identity
set name=RouterOS
 
hecatae
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Posts: 244
Joined: Thu May 21, 2020 2:34 pm

Re: Slow speed with hAP ac2 as AP

Mon Jul 04, 2022 4:19 pm

Is your fiber internet provided via SFP or ONT?
Any reason you are using RouterOS 6.45.6?
 
mcdoaev
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Posts: 4
Joined: Mon Jul 04, 2022 7:17 am

Re: Slow speed with hAP ac2 as AP

Tue Jul 05, 2022 4:03 am

Is your fiber internet provided via SFP or ONT?
Any reason you are using RouterOS 6.45.6?
The fiber is ONT. Re: RouterOS, no particular reason and I can upgrade if needed.
 
mcdoaev
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Posts: 4
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Re: Slow speed with hAP ac2 as AP

Fri Aug 12, 2022 5:02 pm

Bump for any ideas on why the hap ac2 as AP resets under "stress testing" (speed test) when using PoE but not when powered via the provided adapter.
 
holvoetn
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Location: Belgium

Re: Slow speed with hAP ac2 as AP

Fri Aug 12, 2022 5:13 pm

Bump for any ideas on why the hap ac2 as AP resets under "stress testing" (speed test) when using PoE but not when powered via the provided adapter.
Because your POE can not provide enough power, would be the most logical answer.
 
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mkx
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Re: Slow speed with hAP ac2 as AP  [SOLVED]

Fri Aug 12, 2022 7:01 pm

Specifications of hAP ac says it can provide up to 0.7A current on PoE out port when using voltages below 30V.

Specifications of hAP ac2 says it can consume up to 21W (16W without attachments). When using 24V power supply and considering 1-3V (or even more depending on cable length and quality) of drop on UTP cable this means current between 0.75A and 1A (or even more). Which exceeds 0.7A limit of hAP ac.

If PoE is requirement, you can use RBGPOE PoE injector, it's rated to 2A.
 
lambert
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Posts: 548
Joined: Fri Jul 23, 2010 1:09 am

Re: Slow speed with hAP ac2 as AP

Sun Aug 21, 2022 10:37 am

To figure out how much voltage drop to expect, you can use the cable test function on ether1 of the hAP ac^2 to find out approximately how long the cable is. Who knows how your cable was routed through the house if you didn't do it yourself? I see some cable routed in ways that don't make sense to me but may have made sense X years ago when they were installed. Poorly terminated cables, high resistance connection, will also drop voltage. I see a lot of electrician terminated Ethernet that is just wrong in so many ways.

For a 100-200 Mbps connection, I would stick with a 40 MHz channel. The extra 3dB of signal, and reduced noise exposure, may make a difference in fringe areas.
 
mcdoaev
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Re: Slow speed with hAP ac2 as AP

Thu Aug 25, 2022 6:17 am

Specifications of hAP ac says it can provide up to 0.7A current on PoE out port when using voltages below 30V.

Specifications of hAP ac2 says it can consume up to 21W (16W without attachments). When using 24V power supply and considering 1-3V (or even more depending on cable length and quality) of drop on UTP cable this means current between 0.75A and 1A (or even more). Which exceeds 0.7A limit of hAP ac.

If PoE is requirement, you can use RBGPOE PoE injector, it's rated to 2A.
Thank you! I ordered an RBGPOE and everything is now working as expected.
To figure out how much voltage drop to expect, you can use the cable test function on ether1 of the hAP ac^2 to find out approximately how long the cable is. Who knows how your cable was routed through the house if you didn't do it yourself? I see some cable routed in ways that don't make sense to me but may have made sense X years ago when they were installed. Poorly terminated cables, high resistance connection, will also drop voltage. I see a lot of electrician terminated Ethernet that is just wrong in so many ways.

For a 100-200 Mbps connection, I would stick with a 40 MHz channel. The extra 3dB of signal, and reduced noise exposure, may make a difference in fringe areas.
I wasn't aware of the cable length test but I may give it a try. Everything seems to be working now so I can only assume the cables were terminated reasonably well, though I don't know about length.

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