topic Re: Dot1X client re-authentication timer in Wireless

Dot1X client re-authentication timer

KoenPintens — Wed, 29 Apr 2026 11:40:40 GMT

Is there a way to change the timer for when a clients needs to re-authenticate? We lost connection to the Radius servers and wireless clients were cut off quite rapidly in comparison with the wired ones [authentication timer reauthenticate is on the switchports].

Thanks in advance

Koen

Re: Dot1X client re-authentication timer

Htonieto — Wed, 29 Apr 2026 12:51:40 GMT

Hello @KoenPintens

At least on Cisco switches, 802.1X reauthentication is not enabled by default, but you mentioned that it is configured in your environment. Wireless is a different story, as it relies heavily on time‑based reauthentication.

You can try increasing the RADIUS Session‑Timeout and WLAN Session Timeout values so sessions last longer and require fewer periodic authentications.

Also, ensure that PMK caching and/or 802.11r is enabled. This helps during client roaming, as roaming events do not require contacting RADIUS. If RADIUS is unreachable, clients may otherwise fail to roam successfully.

Re: Dot1X client re-authentication timer

KoenPintens — Thu, 30 Apr 2026 05:19:45 GMT

Thank you will give that a go