Hi all,
I'm running OPNsense 25.1.7_4-amd64 (FreeBSD 14.2-RELEASE-p3, OpenSSL 3.0.16) on a hardware appliance (not virtualized).
Today I noticed that the LAN interface is showing 5 errors in the interface statistics.
The network seems to be functioning fine, but I would like to understand:
where these errors come from,
whether I should be worried about them,
and what steps I can take to troubleshoot the issue.
Questions:
What types of errors are reported under the LAN interface stats (CRC errors, packet drops, collisions, etc.)?
Is there a log or diagnostic view in OPNsense where I can see more detail about these errors?
Could they be caused by bad cables, switch ports, or NIC driver issues?
Is a small number of errors (5 errors) considered normal, or does it point to a potential problem?
What steps would you recommend to troubleshoot and hopefully eliminate the cause?
System Details:
OPNsense version: 25.1.7_4
FreeBSD: 14.2-RELEASE-p3
Appliance type: hardware
LAN NIC: Intel(R) I211 (Copper)
Thanks for any advice or experiences you can share!