ACS Error Message :delete 20000 sessions -active sessions are over limit

[vinodjad1234]

Hi,

I have ACS 5.2.0.26.5 configured with RADIUS .

since 4 days , I have continous alarm saying  " delete 20000 sessions "  active sessions are over limit.

I gone through one of the forum discussion :

https://supportforums.cisco.com/thread/2094851

whereas it is mentioned that there is bug CSCtj69797 ( Unfortunately i am unable to open this hyperlink ) but when we discussed with Cisco TAC , they do not say anything about this bug however it seems can be ignored this notification since it does not going to affect on any performance.

According to TAC -   mostly some device like ACE is probing to ACS and each probe creates unneccessary session -----

but this is been configured only for RADIUS with wireless set-up so how can ACE comes in picture ?

Does anybody got any workaround or resolution for this ?

[vinodjad1234]

Hello Experts,

Can anybody look into this ?

[Nicolas Darchis]

This usually happens when you have devices like ACE that probe ACS to see if it's alive. They send radius probes constantly without any accounting stop. This always counts as a new session for ACS and this is legitimate.

The problem is the ACE bombarding the ACS.

So ACS cannot track more than 20 000 simultaneous sessions (=authentications and no accounting stop yet received).

Also make sure that you are using accounting properly on all devices then.

Regards,

Nicolas