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DHCP Reservation option

Huzeifa Akberali

I have created DHCP scope in my Sophos XG230. Now i want to reserve one of the IP from that scope. How is that possible?

I don't want to use static DHCP reservation.



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  • +1

    I'm assuming you mean you want to have a break in the middle of the dynamic range that you do not manage. That is, what you're calling "reserved" is really "unmanaged" (by the DHCP server). So there are unmanaged addresses and any device that doesn't do a DHCP query can arbitrarily set their own IP to be one of those. And there are two kinds of DHCP-managed: 1) Static, where a specific IP is always given to a specific MAC, and 2) Dynamic, where an available managed-dynamic IP address is given to any MAC that inquires.

    When you set up the dynamically-managed DHCP range, there's a plus to the right where you can click and add multiple ranges that are dynamically managed by the DHCP server. These ranges can't overlap, but can leave gaps. In those gaps you can insert managed-static IPs or you can leave them open to anyone who wants to claim them by not specifying any alternatives.

    So any particular IP can fall into any of the three categories, which is I think what you want.

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  • +1

    I'm assuming you mean you want to have a break in the middle of the dynamic range that you do not manage. That is, what you're calling "reserved" is really "unmanaged" (by the DHCP server). So there are unmanaged addresses and any device that doesn't do a DHCP query can arbitrarily set their own IP to be one of those. And there are two kinds of DHCP-managed: 1) Static, where a specific IP is always given to a specific MAC, and 2) Dynamic, where an available managed-dynamic IP address is given to any MAC that inquires.

    When you set up the dynamically-managed DHCP range, there's a plus to the right where you can click and add multiple ranges that are dynamically managed by the DHCP server. These ranges can't overlap, but can leave gaps. In those gaps you can insert managed-static IPs or you can leave them open to anyone who wants to claim them by not specifying any alternatives.

    So any particular IP can fall into any of the three categories, which is I think what you want.

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