Occasional Contributor II

ClearPass 6.8 with YeaLink T21P 802.1x EAP-PEAP do not wotk

Hi, can some one had this king of issue:


I have installed CLearPass 6.8, authenticating all client  PCs and Users using EAP-PEAP, but the same policy does not work with YeaLink T21P VoIP phones and problem showing on access tracker is


"EAP-PEAP: fatal alert by client - bad_certificate"

As I understand VoIP phone do not trust my clearpass RADIUS server certificate. I have tried all types of certificates to upload to this VoIP phone but the error is always the same.


I am adding VoIP phone config and ClearPass service config and error.

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