Alcatel Unleashed

I'm facing an issue for multiple sites that use the same topology for the wifi projects, the site becomes down every 6 to 24 hours and the main switch is working and the port that connected to the backhaul is up, I just reset the port by this below command then the problem will be solved

interface 1/9 admin down
interface 1/9 admin up

however this solution is temporary, I need your support for a permanent solution

check the swlog. Is this the actual sw-release (show microcode, show hardware info? Maybe there was a known issue.
regards
SIlvio