topic Re: enable and disable CoreXL instances on the fly in General Topics

enable and disable CoreXL instances on the fly

HeikoAnkenbrand — Sat, 09 Mar 2019 17:15:22 GMT

At R80.20 there's a new hack to turn the CoreXL instances on the fly on and off. Here is an example with 3 CoreXL instances!

Now start the command:

# fw ctl multik stop -> stop CoreXL instance 1

# fw ctl multik stop -> stop CoreXL instance 2

# fw ctl multik stop -> The last instance cannot be disabled:-)

You can activate it again per:

# fw ctl multik start

Conclusion:
CoreXL 0 cannot really be deactivated under R80.10+:-)

More see here:

PhoneBoy — Sun, 10 Mar 2019 08:39:44 GMT

To be honest I’m not sure what benefit this has.

HeikoAnkenbrand — Sun, 10 Mar 2019 08:56:53 GMT

There is nothing in the documentation about the cli command.

In the maintenance window I tested it on a bigger firewall. I could not see any negative impact.

HeikoAnkenbrand — Sun, 10 Mar 2019 08:59:53 GMT

That I only wonder, that the session counter will not be lower.

HeikoAnkenbrand — Sun, 10 Mar 2019 09:19:34 GMT

I just looked it over at the lab. The existing sessions are not affected.

HeikoAnkenbrand — Sun, 10 Mar 2019 09:24:31 GMT

Maybe someone from R&D can tell whether this has a negative impact or not.

I see here only the performance decrease if I disable CoreXL instances.