topic Re: ISE 2.3 hangs every 4 hrs in Network Access Control

ISE 2.3 hangs every 4 hrs

G2000 — Thu, 07 Sep 2017 03:13:26 GMT

Installed ISE 2.3 EVAL at VMware vSphere, 6*CPU/16G RAM/600G HDD.

If ISE was booted at 8:30am, then around 4hrs later, we found can't login via console or PuTTY or GUI, just stuck after keyin username and password, meantime network connection is good.

Found other people had same situations but couldn't find any useful information to fix it, anybody can help on this? thanks.

Re: ISE 2.3 hangs every 4 hrs

bravojared — Thu, 07 Sep 2017 04:30:51 GMT

Can you verify if VMWARE snapshots are disabled for this VM?

This can occur when snapshots are run, and snapshots are not supported with ISE.

Re: ISE 2.3 hangs every 4 hrs

dazza_johnson — Thu, 07 Sep 2017 06:54:39 GMT

Yep, this exact thing happened to me and we had to turn off snapshots (TAC advice) and it has been solid ever since..... Very weird.

Re: ISE 2.3 hangs every 4 hrs

G2000 — Thu, 07 Sep 2017 22:32:19 GMT

Thanks Jared and Darren, we did find the VM snapshots issue occurred.

Re: ISE 2.3 hangs every 4 hrs

Angelito Manalang — Fri, 09 Feb 2018 17:39:49 GMT

I still have this issue on my ISE2.3 patch 2. I have snapshot set to 0. ESXi6.5 VM ver 13

snapshot.MaxSnapshots - 0

I wonder how did you guys disable snapshot? Is there different way?

I have an existing TAC open for this, but any help or suggestion for a fix, I greatly appreciate it.

Thanks

Allan

Re: ISE 2.3 hangs every 4 hrs

blahblarblah — Wed, 21 Feb 2018 13:09:21 GMT

Hi Angelito,

I found this thread looking for ISE and maxsnapshots to see if that was a solution.

none of the above answers saying "we turned off snapshots" seem to give hints about how they actually achieved this.

we avoided the issue by just 'not snapshotting'..

it required a bunch of workarounds to achieve it though, and i'd rather "fix it properly"

pretty substandard in this day and age to not support snapshot tech.

i'll note that we did see this issue prior to upgrading to version 2.

care to share the tac case?

good luck,

-Quentin

Re: ISE 2.3 hangs every 4 hrs

RandomAnonymousName — Wed, 21 Feb 2018 15:23:28 GMT

The bug ID for non-support of VM snapshots is CSCvd32574 (status: terminated, "No release planned to fix this bug").

Honestly I think we'd be better off with physical ISE nodes. I mean, Cisco also says to disable vMotion per CSCvi03454..

Re: ISE 2.3 hangs every 4 hrs

Angelito Manalang — Wed, 21 Feb 2018 19:05:05 GMT

Hi Quentin,

I got it figure it out, we have Netapps add-on installed in our vm environment and on the background somehow its initiating a snapshot on the entire datastore. I had to create a separate datastore for my ISE vm to exclude it from a volume backup which initiate the snapshot.

Thanks

Allan

Re: ISE 2.3 hangs every 4 hrs

blahblarblah — Wed, 07 Mar 2018 16:47:35 GMT

Yep, that's exactly our workaround also. The only system in our entire environment that needed such a workaround..

Re: ISE 2.3 hangs every 4 hrs

PAUL GILBERT ARIAS — Sun, 20 May 2018 16:54:06 GMT

Hi, so if this happens we should disable the snapshots and to get ISE working we should restart the VMs?

Re: ISE 2.3 hangs every 4 hrs

hslai — Mon, 21 May 2018 00:35:18 GMT

Correct.

Re: ISE 2.3 hangs every 4 hrs

AbteenZ — Mon, 03 Jun 2019 19:35:33 GMT

For us it was our backup solution (Avamar) that was causing this issue on version 2.4 patch 7.

It is a snapshot based solution which explains it all.