OPNsense + PROXMOX + VLANs (again)

Started by elreyquerabio, December 10, 2025, 09:27:14 PM

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Ok I have a managed 1 gig switch I am using. The config is as follows:

1) PC connected to port 5, with the port set to vlan 2 untagged. I have also set the vlan to 2 on the PC NIC.
2) Server connected to port 6, with the port set to vlan 2/3/20 tagged.
3) Server connected to port 7, with the port set to vlan 10/12 tagged.

VLAN 2 is my LAN interface on OPNsense. I hard coded my PC NIC to 192.168.1.10/26. When I try to ping 192.168.1.1 I get nothing. I then re-configured the PC NIC and removed the vlan from the NIC. I try to ping 192.168.1.1 again and get nothing. Ok what am I doing wrong here?

If the port on the switch is VLAN 2 untagged, don't set a VLAN on the PC.
Deciso DEC750
People who think they know everything are a great annoyance to those of us who do. (Isaac Asimov)

Still does not work...

My PC's port is set to both vlan 1 and vlan 2 untagged. Do I need to delete the vlan 1 reference from the switch port or just set the PVID to 2?

PVID 2 and no additional VLAN.
Deciso DEC750
People who think they know everything are a great annoyance to those of us who do. (Isaac Asimov)

And away we go!

Got a connection to the GUI. DHCP gave me an IP, so I know that is working.

Right now I use vlan 1 as my mgmt vlan. In this new build I am moving it to vlan 2 and vlan 1 will no longer be used.

Now to see if I can get to the Proxmox GUI on vlan 3.

Ok so I was not able to get to the Proxmox GUI. Going to reboot and see if that helps.

Id like to think I am good...but sometimes you just gotta walk away from the problem and then come back to it later...which is what I did. I found that the Linux vlan for the Proxmox GUI IP was incorrect in my brave new vlan world. Modified it, rebooted, and yes the GUI is available. At this point its time to deploy the new firewall. If I can do this tomorrow morning I will try to get to it. I will need to reboot all devices using vlan 1, which is not many.