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DHCP lease

An IP address a router lends a device for a limited time.

A DHCP lease is a time-limited loan of an IP address from the network's DHCP server; the device must renew it, and a failed renewal ends its connectivity.

Examples

  • When the greenhouse sensor joins, the router lends it 192.168.1.37 with a lease of, say, 24 hours.

  • At half the lease time the sensor asks the router again, and the router's ACK extends the lease so the address stays the same.

See also

DHCP IP address default gateway
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