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The second reason for the usefulness of DHCP is that many devices can connect to a network for a specified period of time, even without the need for any pool of available addresses. It basically gives the scope, or range, of IP addresses within which the devices receive their address. How does it make working so easy?Ī DHCP server has a pool of addresses for a device to get a valid network connection. There is, of course, no need to have technical details of the process, and you can still get an IP address from the DHCP server just by reading.

In cases where the server does not want the device to have the given IP address, it will not acknowledge the device’s request by sending a NAC.Īlthough the steps mentioned seem to be very time-consuming, these happen so quickly practically then one would not even realize.

It also states the validity of the particular IP address so that the device knows exactly when it has to get a new IP address. To this packet, the server sends an acknowledgment (ACK) to confirm back that the device can now use that specific IP address.

The device or the client now has to respond to the server with a packet named DHCPREQUEST packet in acceptance of the chosen IP address.

Once found, the server responds by sending a packet to the client called DHCPOFFER. As soon as the DHCP server receives this packet, the server looks for an IP address for the device’s use.

This request is sent to the DHCP server in the form of a packet named DISCOVER.

The request sent by a device that is connected to a network with a DHCP server is called a DHCPDISCOVER request.

The steps mentioned below gives an in-depth view of it – Let us now look at this process in more detail.

Using this IP address, the client will be able to communicate on the network.The host will look for an available IP address and assign it to the client.The client can be any device sending the request, and the host can be a router. The client sends a request for an IP address from the host.However, in large networks, the DHCP server can be a single computer.Ī very brief summary of what happens in the process is – In small businesses or homes, the DHCP server is none other than the router. When acting as a server, the DHCP server automatically assigns unique IP addresses alongside configuring other information of the network. Not only this, the DHCP is more advanced when compared to BOOTP. The DHCP servers are capable enough to handle requests from the BOOTP clients if these clients are present in a network. It is an extended version of BOOTP, more popularly known as Bootstrap Protocol, a network IP management protocol from 1985. Web development, programming languages, Software testing & others History of DHCP Start Your Free Software Development Course