It may not be rechecking, can you reboot the switch?
Hi, Since few months, I working to deploy the security protocol 802.1x on wired network of enterprise. It's work well, but since two weeks one of our switches is not more able to authenticate users. It's a DELL PowerConnect 5548p - firmware version 4.1.0.20 I get the same message in logs for every try: Warning %SEC-W-SUPPLICANTUNAUTHORIZED: MAC was rejected on port gi1/0/1 because Radius API returned error (e.g. No Radius server is configured)  Whereas the radius server are configured, there can ping and servers are ok: there works well with other switches show radius-servers   IP address    Port  port  Time-   Ret-  Dead-     source IP    Prio. Usage                 Auth  Acct  Out     rans  Time --------------- ----- ----- ------ ------ ------ --------------- ----- -----     1812  1813  Global Global Global     Global        0    all      1812  1813  Global Global Global     Global        1    all  Global values -------------- TimeOut : 1 Retransmit : 4 Deadtime : 10 Source IP : 0.0.0.0 Source IPv6 : :: I try to remove then re-add servers or reboot switches: not better. Do you have any idea ?   Ch.
PowerConnect 5548P: Radius API returned error