Virtual NAC appliance throttling tasks like crazy

[Dani_tH]

Hi,

We have 2 virtual NAC appliances with identical configuration (I’ve attached some info).

On busy moments, we get a lot of complaints of users not being able to log on to random laptops (using identifi wi-fi and the nac with AD/nps for auth)

so I did some digging in (many) logs and status pages of the nacs.

I noticed that on one device the “UpdateService Thread Pool” and “UpdateService  Scheduled Thread Pool” builds up about 25.000 throttled tasks per day. The screenshot I’ve attached shows the state 2 hrs after a “nacctl restart” command (this seems to reset it to 0)

On the other NAC, this value is most of the time very low and doesn’t throttle..

I notice the complaints are less when the “nacctl restart” command cleared the queue, but this is no solution..

anyone has an idea?

thx

[Miguel-Angel_RO]

Dani,

Prefered choice is 8.5.

Here from release notes:

Extreme Management Center 8.5.0 supports upgrades from Extreme

Management Center version 8.3.x or 8.4.x. If you are upgrading from version 8.2

or earlier of NetSight/Extreme Management Center, you must perform an

intermediate upgrade. For example, if you are upgrading from NetSight 8.1, you

must first upgrade to the latest Extreme Management Center 8.3 or 8.4 release,

then to 8.5.0.

Mig

[Dani_tH]

Yes, that would be the prefered choice.

Upgrading the NAC means upgrading Netsight/EMC as well I suppose?

Can I go straight from 8.1 to 8.5.1.60?

[Brian_Anderson1]

Miguel is correct.  I believe this is a bug fixed in a later version of XMC, I had a customer with the same type of issue with an earlier version of XMC.

[Miguel-Angel_RO · Accepted solution]

Dani,

You run the version 8.1 and the current release is 8.5.

There are so many enhancements and bug fixes released since 8.1.

The risk is to chase a known issue and to lose a lot of time in debugging.

Wouldn’t be an upgrade to 8.5 an option?

Mig