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Dated: Apr. 06, 2012

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Windows Server OS

By Vivek Nayyar

Configure Windows Server 2008 R2 as a DHCP Server

Something About DHCP Server

A DHCP server is a dedicated computer running on any network operating system (Microsoft Windows Server 2003/2008) that is responsible for providing dynamic IP addresses to the client computers. In order to get IP address from the DHCP server client computers must be configured to obtain IP addresses automatically.

Microsoft Windows Server 2008 R2 computer, when configured as a DHCP server, can provide both IP version 4 and IP version 6 addresses to the client computers provided the DHCP server is configured accordingly and the client computers support IP version 6 addresses.

When Windows Server 2008 R2 computer is configured as a DHCP server, it can have multiple NICs and each NIC can be configured to provide IP addresses to the computers that belong to different subnets. For example, if Windows Server 2008 R2 DHCP server has NIC-1 with and NIC -2 with static IP addresses assigned to them, both NICs, if configured appropriately, can provide dynamic IP addresses to the clients connected to their respective subnets.

DHCP Servers in Domain-based Environments

When a DHCP server is configured to provide dynamic IP addresses to the client computers in any active directory domain environment it must be authorized by the domain controllers before it actually starts assigning the addresses to the client computers from its address pool. During the installation of the DHCP server role in Windows Server 2008 R2 operating system administrators can skip the authorization process. However if they do so, the DHCP server does not assign IP addresses automatically until administrators manually authorize it with the domain controller.

Installing DHCP Server Role

Administrators must install DHCP server role on a Windows Server 2008 R2 computer before it can be configured to assign IP addresses to the client computers automatically. Steps involved in adding DHCP server role to a Windows Server 2008 R2 computer are given as below:

  1. Log on to Windows Server 2008 R2 computer with administrator account.
  2. Go to Start > Administrative Tools and from the available list click Server Manager.
  3. On the opened Server Manager snap-in from the left pane click to select Roles and from the right pane click Add Roles.
  4. On Add Roles Wizard’s Before You Begin window click Next.
    Add Roles Wizard Before You Begin
  5. On Select Server Roles window check DHCP Server checkbox and click Next.
    Server Roles
  6. On DHCP Server window click Next.
    DHCP Server
  7. On Select Network Connection Bindings window make sure that the checkboxes representing the network connections, that the DHCP server must serve, are checked and click Next.
    Network Connection Bindings
  8. On Specify IPv4 DNS Server Settings window type the name of the domain in Parent domain field and in Preferred DNS server IPv4 address field type the IP address of the DNS server.
  9. Click Validate button to validate the DNS server and once validated click Next.
    IPv4 DNS Settings
  10. On Specify IPv4 WINS Server Settings window leave everything as default and click Next.
    IPv4 WINS Settings
  11. On Add or Edit DHCP Scopes window leave everything as default (for now) and click Next.
    DHCP Scopes
  12. On Configure DHCPv6 Stateless Mode window click Next leaving everything as default.
    DHCPv6 Stateless Mode
  13. On Specify IPv6 DNS Server Settings window erase the values from the populated field (for now, assuming that the network setup does not have IPv6 addressing scheme) and click Next.
    IPv6 DNS Settings
  14. On Authorize DHCP Server window make sure that Use current credentials radio button is selected and User Name field is populated with the name of the account that holds administrative privileges on the server. Alternatively, Use alternate credentials or Skip authorization of this DHCP server in AD DS radio buttons can also be selected according to the requirements of the network infrastructure.
  15. Once appropriate radio button is selected click Next.
    DHCP Server Authorization
  16. On Confirm Installation Selections window click Install button to start DHCP installation process.
    Confirmation Installation Selections
  17. Once the installation process completes click Close button.
    Add Roles Wizard Installation Results

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Mohammed's Comment
Thank You
05 Wed Dec 2012
Admin's Reply:

You're welcome my friend.

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02 Sat Jun 2012
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