Wireless users speed is only 54M

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Customer check on the wlan client status. Found that client  Rx/Tx only hit to max 54M/54M. According to user should be able to hit more due to this AP are support 802.11AC the max rate should be 867Mbps (5G).

Check the configuration of the service template:

#

wlan service-template guest

ssid GUEST

vlan 600

akm mode psk

preshared-key pass-phrase cipher $c$3$r8swOVQCy+9coYYGo/24iig3RJIEhyz2t3eRLmk=

cipher-suite tkip

security-ie rsn

service-template enable

#

And find the cipher-suite is tkip.

WPA and TKIP compatability options can also slow down your Wi-Fi network. Many modern Wi-Fi routers that support 802.11n and newer, faster standards will slow down to 54mbps if you enable WPA or TKIP in their options. They do this to ensure they’re compatible with these older devices.

For reference:

https://www.howtogeek.com/204697/wi-fi-security-should-you-use-wpa2-aes-wpa2-tkip-or-both/

Change cipher-suite as ccmp. And problem solved.