Unable to pass traffic thru new interface

[joshgreyz]

I am having a strange issue regarding a new interface (separate NIC port) on my OPNsense switch. I have two interfaces which have been working fine for the past year, called WAN and LAN (with 192.168.1.0/24 subnet)

I recently created a new interface called LAN2 with a different 192 subnet. The configuration of LAN and LAN2 are identical with the exception of their differing 192 subnets.

It was not passing traffic and the dashboard showed me that it was erroring trying to connect to anything. I thought maybe it was a NAT outbound issue, which was set to autmatic. I tried hybrid and manual while setting rules. Same outcome, LAN and WAN continued to be fine but LAN2 still would not pass traffic.

LAN2 won't ping any systems on LAN or WAN, so I thought maybe it could be a bad NIC port and tried the last NIC port. Same result.

I'm not sure what I'm missing here and hope you all have some ideas I can try. Thank you.

[dinguz]

With these things I find it beneficial to start with a floating ‘allow all’ rule to that applies to all interfaces. If it works then, you already know it’s a fw rule issue. Then work from there.