We have a few sites that we moved from our vSZ to a Zonedirector (due to ap's not being supported on newer vSZ version).
Zonedirector is running 10.1.2.0 build 318, newest one supporting the ap's in question, a mix of R300/R700/H500.
Everything is working fine, except for one site. All sites are remote and tunnel to ZD over the internet.
This one site the issue is that ap's keep dropping off all the time, there are in total 83 ap's on the site, majority is H500.
But at any given time the number of connected ap's is typically around 50 (we can hit the refresh button in ZD every ten seconds and the number will go up and down all the time).
Site is running an Aruba firewall and HP procurve switches.
The site has been running without issues for about 5 years, but then of course after migrating it to ZD these issues started appearing.
ZD has a public ip but is behind a firewall, and yes the correct ports are open (at the moment all ports are opened from the site with issues, just to eliminate).
Question is how to migitage/fix this, we have several other sites with exactly same ap's connected remotely as well without issues.
Same switches, not a PoE issue as far as we can tell, PoE budget is fine.
Tried to play with MTU and every other thing I can think of.
So really open for suggestions.