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using pfSense DHCP to service other subnets via relay

Scheduled Pinned Locked Moved DHCP and DNS
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  • C
    coreybrett
    last edited by Sep 12, 2018, 7:21 PM

    I currently have a Windows DHCP server that handles all of our company's subnets via relays. How would I configure pfS to replace this old server?

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    • J
      jimp Rebel Alliance Developer Netgate
      last edited by Sep 12, 2018, 7:23 PM

      pfSense can't act as a server for multiple subnets unless it has a direct L2 connection to each subnet (no relays).

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      • C
        coreybrett
        last edited by Sep 12, 2018, 7:28 PM

        Is this a pfS limit, or the underlying dhcpd?

        J 1 Reply Last reply Sep 12, 2018, 7:56 PM Reply Quote 0
        • J
          jimp Rebel Alliance Developer Netgate
          last edited by Sep 12, 2018, 7:28 PM

          A limitation of pfSense

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          • C
            coreybrett
            last edited by Sep 12, 2018, 7:29 PM

            Ok, thanks. I guess I'll just P2V the old server.

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            • J
              JKnott @coreybrett
              last edited by Sep 12, 2018, 7:56 PM

              @coreybrett said in using pfSense DHCP to service other subnets via relay:

              Is this a pfS limit, or the underlying dhcpd?

              It's because DHCP initially uses broadcasts, which are not passed through routers. You have to set up a relay agent to get around that. PfSense can be configured as a relay, but I haven't tried that.

              PfSense running on Qotom mini PC
              i5 CPU, 4 GB memory, 32 GB SSD & 4 Intel Gb Ethernet ports.
              UniFi AC-Lite access point

              I haven't lost my mind. It's around here...somewhere...

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