Dear forum,
I experience slower download rates than upload rates of my wireless devices via cAP AX (-> CRS326 → RB5009 → ISP): downloads are approx. 50 % slower than uploads.
The absolute speeds (240 Mbit down, 480 Mbit up) are totally acceptable, but the difference is huge and I would like to understand the reason and, if possible, resolve the delta.
From your general experience and knowledge: where and what should I look into? Are there any usual suspects?
Can you share what (client) devices you are using?
At what rates are the clients connected?
Can you share the settings of the cAP AX?
According to WiFi Registration:
Apple iPhone 15 Pro Max (2023) via 5GHz Tx 960.8 Mbps / Rx 960.8 Mbps
Apple MacBook Pro M1 Max (2020) via 5GHz 1201.0 Mbps / Rx 960.8 Mbps
# 2024-05-21 12:20:27 by RouterOS 7.14.3
# software id = 8C87-BNE8
#
# model = cAPGi-5HaxD2HaxD
/interface bridge
add admin-mac=XX:XX:XX:XX:XX:XX auto-mac=no name=bridge-og-cap \
vlan-filtering=yes
/interface ethernet
set [ find default-name=ether1 ] comment="PoE in | Uplink"
set [ find default-name=ether2 ] comment="PoE out" poe-out=off
/interface vlan
add comment=management interface=bridge-og-cap name=vlan1-management vlan-id=\
1
add comment=home interface=bridge-og-cap name=vlan10-home vlan-id=10
add comment=guests interface=bridge-og-cap name=vlan30-guests vlan-id=30
/interface list
add name=LAN
/interface wifi datapath
add bridge=bridge-og-cap disabled=no name=datapath
/interface wifi
# managed by CAPsMAN
# mode: AP, SSID: XXX, channel: 5805/ax/eeeC
set [ find default-name=wifi1 ] configuration.manager=capsman .mode=ap \
datapath=datapath disabled=no
# managed by CAPsMAN
# mode: AP, SSID: XXX, channel: 2412/ax
set [ find default-name=wifi2 ] configuration.manager=capsman .mode=ap \
datapath=datapath disabled=no
/interface bridge port
add bridge=bridge-og-cap interface=ether1
add bridge=bridge-og-cap interface=ether2
add bridge=bridge-og-cap interface=wifi1
add bridge=bridge-og-cap interface=wifi2
/ip neighbor discovery-settings
set discover-interface-list=LAN
/interface bridge vlan
add bridge=bridge-og-cap comment=management tagged=bridge-og-cap vlan-ids=1
add bridge=bridge-og-cap comment=home tagged=bridge-og-cap,ether1,ether2 \
vlan-ids=10
add bridge=bridge-og-cap comment=guests tagged=bridge-og-cap,ether1,ether2 \
vlan-ids=30
/interface list member
add interface=bridge-og-cap list=LAN
add interface=vlan1-management list=LAN
add interface=vlan10-home list=LAN
/interface wifi cap
set caps-man-addresses=10.0.0.1 certificate=request discovery-interfaces=\
vlan1-management enabled=yes lock-to-caps-man=yes slaves-datapath=\
datapath
/ip dhcp-client
add comment=defconf disabled=yes interface=bridge-og-cap
add interface=vlan1-management
add interface=vlan10-home
/system clock
set time-zone-name=Europe/Berlin
/system identity
set name=OG-cAP-ax
/system leds settings
set all-leds-off=after-1h
/system note
set show-at-login=no
/system routerboard mode-button
set enabled=yes on-event=dark-mode
/system script
add comment=defconf dont-require-permissions=no name=dark-mode owner=*sys \
policy=ftp,reboot,read,write,policy,test,password,sniff,sensitive,romon \
source="\r\
\n :if ([system leds settings get all-leds-off] = \"never\") do={\r\
\n /system leds settings set all-leds-off=immediate \r\
\n } else={\r\
\n /system leds settings set all-leds-off=never \r\
\n }\r\
\n "
/tool mac-server
set allowed-interface-list=LAN
/tool mac-server mac-winbox
set allowed-interface-list=LAN
Connection rates look pretty good. Only remark I have on your config, don’t use VLAN ID 1 explicitly. But that has nothing to do with your findings.
How do you speedtest? If not already tried, could you use iPerf with the server running on a device connected wired?
I am using the iOS and macOS Speedtest by OOKLA apps (speedtest.net).
Wired connection gives me download ~530 Mbps and upload ~690 Mbps, both higher than expected as ISP connection is 500/500 via fiber.