Granstream GWN76XX Access Point Event log: WPA-PSK deauthentication (four-way handshake failure)

Granstream GWN76XX Access Point Event log: WPA-PSK deauthentication (four-way handshake failure)

Description:

Sometimes you will notice that the Grandstream GWN76XX Access Point event log shows multiple messages of WPA-PSK deauthentication (four-way handshake failure) resulting in clients’ Wifi disconnection. When the client device’s RSSI is below -70dBm, it is scanning continuously to find a new AP to roam and connect to. At around -75dBm to -80dBm, the AP starts experiencing issues with associating and completing a 4-way handshake, and thus the wifi signal is weak and poor.

Suggestion

You may disable the Airtime Fairness (under Radio Setting) and Band Steering (under AP config). Monitor the Wifi performance.

2 thoughts on “Granstream GWN76XX Access Point Event log: WPA-PSK deauthentication (four-way handshake failure)”

  1. Can the messages be improved to be more specific? Can it be noted when a connection was terminated because airtime fairness, band steering, etc?
    How to distinguish between normal wifi operation like moving clients around between APs and bands, and clients who typed their password wrong?
    Can the .11r roaming messages be more detailed to note where the client is coming from? GWN should know this, since it’s managing the roaming…?
    The event log could be SO MUCH more useful in general.

    Reply
  2. Hi
    I not enable the Airtime Fairness and Band Steering, but still Event log: WPA-PSK deauthentication (four-way handshake failure)
    What is the problem? How do we need to setup?

    Reply

Leave a Comment