One of the major advantages offered by DHCP is the ability to lease an IP address, meaning assigning it on a temporary basis. Usually, when the client leaves the network, that particular assigned IP address is then free to be allocated to another device by the DHCP server.
DHCP leases are related to every DHCP allocation and define for how long a user is allowed to use an allocated IP address. This parameter is usually administratively configured inside the DHCP scope. Whenever a client is rebooting, that client will again have to ask the DHCP server for an IP address . . .
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