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WLC 9800 RADIUS failover failure

So we were upgrading our RADIUS servers and when we did we noticed that the RADIUS failover did not happen as expected. I'm thinking my predecessor has the AAA Advanced settings set up incorrectly but I am not familiar with this model controller. Can someone verify the correct settings/behavior for the "AAA Advanced" for proper RADIUS failover on a WLC 9800-80 running 17.3.5a?

 

What I have now is

 

Retransmit Count = 3

Timeout Interval (seconds) = 5

Dead Time (Minutes) = Not configured - so I assume it is default of 5 minutes.

 

unnamed.png

 

When digging in I read here (https://www.cisco.com/c/en/us/td/docs/wireless/controller/9800/17-3/config-guide/b_wl_17_3_cg/m_aaa_dead_server_detection.html) that you can set up dead server detection criteria. So my question is, if you don't have any dead server detection criteria set up, will you ever get a failover? 

1 Accepted Solution

Accepted Solutions

marce1000
VIP Mentor VIP Mentor
VIP Mentor

 

                     - Informational : https://bst.cloudapps.cisco.com/bugsearch/bug/CSCtl06706

 M.

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8 Replies 8

Flavio Miranda
Advisor
Advisor

Hi

 It must use a default value. I dont believe that exist correct value for this. It will depend on your environment. Basically, if you are starting fresh, you should use Cisco recommendation.

 

 

What is the output of :

 

show run | s dead-criteria

 

sh aaa dead-criteria radius <server>