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    DHCP to reserve the same IP withwin the pool

    DHCP and DNS
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    • J
      john24634 last edited by john24634

      I have DHCP on my IOT network with Pool from: 192.168.20.20 to 192.168.20.250

      It assigned 8 IPs to my IOT wifi plugs: 192.168.20.183 up to 192.168.20.190
      That I successfully configured in Home Assistant

      97571e36-4fff-4669-a451-9dbef340c176-image.png

      Now since I will not use all of them immediately I will like to "lock them on their IP" .183 to .190 until I use them next time (maybe in months or years!!!)

      if I add the device IP address to
      a2e2bb33-a5f8-4d81-acc1-a659264de7c3-image.png
      then it will tell me:
      The IP address must not be within the DHCP range for this interface.

      I am not sure what happens if I leave it BLANK

      A the end of the day what should I do to keep their IPs for years?

      Maybe Default lease time and Maximum lease time to UNLIMETED?

      d27b9201-0b53-4d1f-890b-c2af3959d7f4-image.png

      JKnott J S 3 Replies Last reply Reply Quote 0
      • JKnott
        JKnott @john24634 last edited by

        @john24634 said in DHCP to reserve the same IP withwin the pool:

        I am not sure what happens if I leave it BLANK

        According to the image you posted, the device will get a regular DHCP address from within the pool.

        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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        • J
          Jarhead @john24634 last edited by

          @john24634
          If you want to reserve an address it has to be outside of the dhcp pool.
          So either make the pool smaller, or use .2 through .19

          1 Reply Last reply Reply Quote 0
          • J
            john24634 last edited by john24634

            @john24634 said in DHCP to reserve the same IP withwin the pool:

            Maybe Default lease time and Maximum lease time to UNLIMETED?

            Can I set Default lease time and Maximum lease time to 5 years(157784630 seconds) for that mac addresses?

            JKnott 1 Reply Last reply Reply Quote 0
            • JKnott
              JKnott @john24634 last edited by

              @john24634 said in DHCP to reserve the same IP withwin the pool:

              Can I set Default lease time and Maximum lease time to 5 years(157784630 seconds) for that mac addresses?

              What would you achieve with that? If you use a static map, the device will always get the same address.

              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...

              1 Reply Last reply Reply Quote 0
              • S
                SteveITS Rebel Alliance @john24634 last edited by

                @john24634 See https://docs.netgate.com/pfsense/en/latest/services/dhcp/mappings-in-pools.html for the reasoning for this.

                You can split your pool and create additional pools to use IPs in the middle.

                Only install packages for your version, or risk breaking it. If yours is older, select it in System/Update/Update Settings.
                When upgrading, let it finish. Allow 10-15 minutes, or more depending on packages and device speed.
                Upvote 👍 helpful posts!

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