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    2 pfSense and 2 WAN links how to make redundancy

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    HA/CARP/VIPs
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    • B
      balmmva
      last edited by

      Hi

      I have:
      2 pfSense on bare metal with 4 ethernet ports cards on each.
      2 independant WAN links each with a fiber to eth ONT.
      each fiber link is connected (PPPOE on specific vlan due to ISP reqs) and it's working,
      Currently, each box is used by one floor.

      I would like to merge the 2 floors hw, have multiwan and redundant pfsense.

      On LAN side, I have 3 vlans, each using one ethernet port. total ports used is 4, 100% of the available.

      Any example of HA configuration I have found shows WAN link connected to each box. And, now, I don't have an ethernet port free to plug one more eth cable.

      Is there any drawback when using multiple vlans on a single eth port (to free up a port for a 2nd WAN link) vs 1 vlan per port ?
      Is it better/required to add a switch on the WAN side ?
      Is there a way to leave the 2 boxes with only it's current WAN link active and have some redundancy for internet access from LAN if the master dies ?

      thx

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      • V
        viragomann @balmmva
        last edited by

        @balmmva
        A WAN interface behaves basically like any other. So for HA you need three IPs in a subnet.

        However, CARP isbnot compatible with PPPoE. You will have to put a router in front of the WANs.

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