newly built OPNSense 22.1.9 server build becoming unresponsive

[jfletcher72]

Hello group. I am a new user and looking for some assistance on t-shooting an issue. I installed OPNSense via USB boot. the install went as expected. No issues. I have it currently segregated in a lab environment (no WAN connection to internet). It is serving DHCP to 3 separate VLANs which are trunked to my Cisco 3850 switch. I can receive DHCP from all 3 vlans. However at some point over the night the server becomes unresponsive and I am unable to ping its gateway interface, or access the web frontend. I have logging enabled to "debug".  Looking at the log these are the last entries from the night before and the entry after my reboot.
2022-07-08T09:44:12-05:00   5   Notice   syslog-ng   15720   syslog-ng starting up; version='3.36.1'   
2022-07-07T15:55:07-05:00   1   Error   opnsense   61418   /usr/local/etc/rc.routing_configure: The OUTSIDE_LAN1_DHCP monitor address is empty, skipping.

Are there any files/logs/ console output I could provide to help determine why the server suddenly stops responding?

Thank you in advance for your help.


Server build:
Kingdel NC4000 Industrial PC Fanless Design Mini Computer i5 4200U CPU
8GB RAM
128GB SSD

[jfletcher72]

any recommendations?

[axsdenied]

Only time I've experience similar behavior was when I was using BSD's generic network drivers (default) for realtek nics.  I would then experience watchdog errors and the system would become unresponsive.

Otherwise, if you don't have that particular issue, and given you have no meaningful log readouts, I would start looking at other hardware related issues like memory.