topic Re: 4 way handshake timeout in Wireless

4 way handshake timeout

ittechk4u1 — Mon, 05 Jul 2021 15:20:59 GMT

Hello experts,

I am getting the eeor on a WLAN

"Client Deauthenticated: MACAddress:xxxxxxxxxxx Base Radio MAC:yyyyyyyyyyyyyy Slot: 0 User Name: unknown Ip Address: unknown Reason:Authentication rejected because of challenge failure ReasonCode: 15"

I read somewhere that its a issue of 4-way handshake timeout. This means that during the initial phase of authentication the wireless client didn't respond or didn't respond within the time frame.

How can i increase the 4 way Handshake timeout on WLC or in WLAN?

Thanks

Re: 4 way handshake timeout

Ric Beeching — Wed, 07 Mar 2018 12:56:50 GMT

Hey,

What do you see on your Authentication Server logs? You should see an error message of some kind which may clue you into why it has failed.

What type of 802.1x authentication are you trying to use?

Ric

Re: 4 way handshake timeout

Sandeep Choudhary — Wed, 07 Mar 2018 12:57:28 GMT

Thats correct , its a issue of 4 way handshake.

you cna try these comamnds:

config advanced eap eapol-key-timeout
config advanced eap eapol-key-retries

Regards

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Re: 4 way handshake timeout

ittechk4u1 — Wed, 07 Mar 2018 14:07:29 GMT

Great it works.

Thank you very much

Re: 4 way handshake timeout

ittechk4u1 — Thu, 08 Mar 2018 06:22:34 GMT

there is no special Authentication server , WLAN is conifgred with WPA2/AES-PSK.

Error:

User Name: unknown Ip Address: unknown Reason:Authentication rejected because of challenge failure ReasonCode: 15

Thanks

Re: 4 way handshake timeout

sam2386 — Wed, 12 Jun 2019 16:56:10 GMT

Iam having the same issue and i tried both of the commands to increase the max retries to 4 and timeout to 2000 still not success. all other SSID's are working find except one SSID having this same issue, do you have an idea if there is something else to look into?

thanks