DHCP is a protocol used to provide network related configuration to the network hosts. Mainly IP address information, network gateway, network mask and DNS server information are provided by DHCP protocol. DHCP have more features like providing boot file over network etc. In this tutorial we will look how DHCP reservation works for Windows Server 2012, Windows Server 2008, Cisco and benefits of using dhcp reservation.
More information about DHCP protocol can be get from following post.
What is DHCP and How It Works?
IP address generally assigned with two different way.
- Dynamic IP Address
- Static IP Address
Dynamic IP Address
Dynamic IP address assignment is generally done with DHCP protocol. Preconfigured IP ranges are used to assign an empty IP address to the network host. So the host do not need a configuration. Just plug the cable and your IP address will be set according to network configuration.
One of the most common error is previously configured static IP address for the host prevents to get new IP address with DHCP. So we should be sure that we have cleared all previously set IP address and related configuration. Following tutorials show how to manage and clear network configuration on the Linux and Windows hosts.
Linux Network Management With Examples
Windows Ipconfig Command Tutorial With Examples To List, Change, Renew IP Configuration
Static IP Address
Static IP Addresses are assigned by hand and there is no need for DHCP protocol. While configuring Static IP address we should provide following information
- Host IP Address
- Netmask
- Network Gateway Address
- DNS Server Address
Reservation
DHCP generally used to assign IP addresses to the network hosts. These IP addresses are selected from a IP address pool. IP address pool is configured according to the IT environment configuration and architecture. Generally MAC address and IP address is matched together to reassign the same IP address to the same device and network interface.
Windows Server 2008 and Windows Server 2012
Windows server operating systems like 2008, 2012 and 2016 provides DHCP services like a router or modem. We can enable these services to benefit and use DHCP service.
First we will open DHCP Management Console. We assume that we have all ready configured a Scope because we will work under Scope. We will Click Reservation right and Create New Reservation .
And a new windows for reservation configuration will be opened like below.
We will set following information about reservation.
Reservation Nameto remember and name itIP Addresswhich IP address will be reserved.MAC Addresswhich device or networkcar will use this IP address.Descriptionmore detailed information and comment about reservation.
Linksys Router and Modem
We can enable DHCP reservation in Linksys modems and router from the following screen. We should select the device according to its host name and make a tick.