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Cisco RADIUS authentication fails intermittently.

Posted on 2016-07-18
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Last Modified: 2016-07-25
Does anyone knows why I'm getting these messages every 40-60 seconds, Cisco ACS server dead-alive-deadagain-and so on??
Note: Just happen in cisco switch 3750 stacked with port-channels configured.
 
230577: .Jul 18 12:29:52: %RADIUS-6-SERVERALIVE: Group radius: Radius server 192.168.0.10:1812,181 is responding again (previously dead).
230574: .Jul 18 12:29:20: %RADIUS-3-ALLDEADSERVER: Group radius: No active radius servers found. Id 164
 
show version:
C3750 Software (C3750-IPBASEK9-M), Version 15.0(2)SE4
 
Radius configuration:
aaa authentication login default local
aaa authentication dot1x default group radius
aaa authorization console
aaa authorization exec default local
aaa authorization network default group radius
aaa accounting dot1x default start-stop group radius
aaa accounting system default start-stop group radius
 
radius server RMN
 address ipv4 192.168.0.10 auth-port 1812 acct-port 181
 automate-tester username cisco ignore-acct-port
 key 7 **************
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Question by:Hector2016
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5 Comments
 
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Expert Comment

by:Keshwarsingh Nadan
ID: 41719823
Can you share some more details on your etherchannel(s) ?
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Accepted Solution

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Hector2016 earned 0 total points
ID: 41721353
Problem solved.
Sorry for the noise.
It was a human error on the config.
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Author Comment

by:Hector2016
ID: 41724852
On the CISCO ACS web interface, you go to the properties of the Switch that is having the intermitence, then re-set the password field.

This happened because the IE auto-filled the field password with a catched value that was not the correct one, I didn't see the error because the password field does not show the actual characters, so I had to re-enter the correct password, and that solved the issue.
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Author Closing Comment

by:Hector2016
ID: 41727380
It was a human error on the cisco config.
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