topic Re: CISCO ISE nodes restart unexpectedly in Network Access Control

CISCO ISE nodes restart unexpectedly

henokk60 — Mon, 04 Aug 2025 07:50:40 GMT

Hi All,

We deployed ISE in a distributed deployment and, unexpectedly, the PSN and PAN nodes restarted twice, causing a service disruption. Could you please let me know how I can find the exact logs for the node restarts?

Thanks

Re: CISCO ISE nodes restart unexpectedly

Mark Elsen — Mon, 04 Aug 2025 07:56:09 GMT

- @henokk60 Use a console attached to the nodes , to get info's and outputs from those restarts,
including possible reasons.

Re: CISCO ISE nodes restart unexpectedly

henokk60 — Mon, 04 Aug 2025 08:01:17 GMT

@Mark Elsen Thanks for your reply. Can you please send me some commands that will help me with my checks?

Re: CISCO ISE nodes restart unexpectedly

klnnnnng — Mon, 04 Aug 2025 08:04:09 GMT

Hi,

you can use

show logging system ade/ADE.log

show logging application ise-psc.log

or download the show-tech and check for any issues with processes and performance.

Re: CISCO ISE nodes restart unexpectedly

Mark Elsen — Mon, 04 Aug 2025 08:07:31 GMT

- @henokk60 Try to engage on the issue according to my initial reply first; that is the more important thing to do.

Re: CISCO ISE nodes restart unexpectedly

PSM — Mon, 04 Aug 2025 08:09:23 GMT

You should open a TAC case and get them investigate the reason. You can download support bundle which include logs. To download the support bundle you can use GUI. Go to Opertaion>Troubleshoot>Download logs. Select applicable node and then check on Include debug logs, Include system logs. Define the date when the issue occurred. Select Public Key encryption. Create support bundle. When support bundle is created you can download and share with TAC to investigate it.

Re: CISCO ISE nodes restart unexpectedly

henokk60 — Mon, 04 Aug 2025 08:31:11 GMT

@klnnnnng Do these commands affect performance, or should they be run during a maintenance window since the system is in production?

Re: CISCO ISE nodes restart unexpectedly

klnnnnng — Mon, 04 Aug 2025 09:14:18 GMT

Hi,

you can run them anytime.