Can you describe how dhcp works

What if DHCP server is not in the same subnet? More Posts. Alok Rawat. Thanks a lot brother!! Really good article. Especially, the point you have mentioned about Giaddr.

Leave a Reply Cancel Reply Your email address will not be published. If a host sees its MAC address in the client ID field, the host knows that the message is meant for it. If a host sees the MAC address of another host in the client ID field, the host knows that the message is not intended for it.

In such a case, the client can make a new request for another IP configuration. An easy way to remember these messages in the correct order is to think of the popular children's show "Dora the Explorer".

That's all for this tutorial. You can read more blogs from here. Admin AfterAcademy 6 Feb What is DHCP and how does it work? Share this blog and spread the knowledge. Share On Facebook. The server also sends an acknowledgement message ACK to the client. The acknowledgement message contains the network configuration parameters for the client. The client uses the ping utility to test the IP address to make sure no other system is using it.

The client then continues booting to join the network. The client monitors the lease time. When a set period of time has elapsed, the client sends a new message to the chosen server to increase the lease time. The DHCP server that receives the request extends the lease time if the lease still adheres to the local lease policy set by the administrator. If the server does not respond within 20 seconds, the client broadcasts a request so that one of the other DHCP servers can extend the lease.

When the client no longer needs the IP address, the client notifies the server that the IP address is released. This notification can happen during an orderly shutdown and can also be done manually. Search Scope:. Introducing IPv6 Overview 4.

Planning an IPv6 Network Tasks 5. Administering Network Interfaces Tasks 7. Configuring an IPv6 Network Tasks 8.