Multiple Subnets on one NIC



  • Greetings All,

    I've been using pfSense as a home router for about 6 months now, and am interested in using it at a job I just started. Currently, the entire network is in one subnet. I'd like to break it into 4: Management, Servers, I.T., and Sales. I'd like to use some older Dell 1U PE1750s I've got, and CARP them together. I really don't want to have to buy more NICs for them, though.

    Is it possible with virtual IPs to have multiple subnets on a single LAN NIC, then use VLANs on managed switches to segregate the traffic? If so, can anyone point me in the right direction, documentation wise, on how to accomplish this?

    Any help would be greatly appreciated.



  • INTERFACES -> (assign) -> VLANs
    There you can create the four VLANs you like and then go to

    INTERFACES -> (assign) -> Interface assignments
    and assign the VLANs to the NIC you like.

    Thats all.

    after this you could assign an IP to every VLAN, editing the DHCP for every VLAN and you have to edit the firewall rules for every VLAN and so on.

    On the switch site you will connect this with a trunk port.



  • Thank you very much, I'll give it a try.


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