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    Colocation, Single WAN NIC, Multiple subnets, two pfSense devices with HA

    Scheduled Pinned Locked Moved Routing and Multi WAN
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    • R Offline
      rogerivy
      last edited by

      Excuse me if this has been asked. I searched and "came close" but no definite solution.

      I have several servers behind two pfSense appliances - set up for failover.
      Due to a change of IPv4 allocations I'm going from one subnet to two. On one subnet I only get 3 usable IPs, on the other I get 11.

      I tried simply setting up some CARP VIPs but the system won't allow it (Sorry, we could not locate an interface with a matching subnet for xxx. Please add an IP alias in this subnet on this interface.)

      What is the correct way to set this up, earning in mind that I want to have failover in place? As I understand, an "IP Alias" doesn't facilitate HA.

      The diagram below should look familiar.

      I tried adding a 2nd WAN to the same NIC, but I can't connect to the device any longer :( …. looks like a three-hour round trip to my colo provider

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