Hi need help

[hasansadiq]

Hi all,

this is regarding wlc2504 which went done for 15 minutes this is the log which i got what can we interpret from this 

radius_db.c:412 RADIUS server (ip):1812 failed to respond to request(ID 125) for STA 00:1c:bf:ae:95:b4 / user 'unknownUser'

RADIUS server (ip):1812 deactivated on WLAN 1

RADIUS server (ip):1812 activated on WLAN 1

duplex mismatch discovered on fastethernet0(not full duplex)

[ali aqrabawi]

1)radius_db.c:412 RADIUS server (ip):1812 failed to respond to request(ID 125) for STA 00:1c:bf:ae:95:b4 / user 'unknownUser' .

>>its hard for support forum Folks to answer your question based on the error log above, 

but what we can undersatdn that he radius server is not responding to the client authentication req , 

this is should not be WLC issue . maybe a user hit connect to that 802.1x wlan which not suppose to connect to it .

2)duplex mismatch discovered on fastethernet0(not full duplex)

>>check the duplix between the AP and the switch 

[hasansadiq]

for duplex mismatch the wlc after restarting is working well.only for 15 min this issue arised.what could be possible reason?

[mohanak]

Refer the link : https://supportforums.cisco.com/discussion/11827081/radius-server-failed-respond-request