Dynamic IP address is the opposite of a static IP. This means that on semi-regular intervals the device with a Dynamic IP address can be assigned a new IP address without the knowledge of the building operators so the device might be “lost” from being accessed. This is also called Dynamic Host Configuration Protocol (DHCP) which is defined as a client/server protocol that dynamically or automatically provides an IP host devices with its IP address and other related configuration information (such as the subnet mask and default gateway). It is strongly recommended to have static IP addresses for devices that building operators need access to.