We are polling our devices using SNMP v3 from different ZABBIX proxies and we are facing a weird issue on all our hosts about their availability status on ZABBIX dashboard.
For new added device, it works as expected (availability is shown) but after some days, we cannot see anymore availability status for this host from ZABBIX dashboard.
However, it continues to collect data without issue.
2x active proxies
See screenshot below when issue occurs
Restart ZABBIX server service