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Installing DHCP and Windows Deployment Services

05:29    2 comments

DHCP Introduction

When you deploy Dynamic Host Configuration Protocol (DHCP) servers on your network, you can automatically provide client computers and other TCP/IP-based network devices with valid IP addresses. You can also provide the additional configuration parameters these clients and devices need, called DHCP options, that allow them to connect to other network resources, such as DNS servers, WINS servers, and routers.

 IP addresses can be configured statically or dynamically. Normally we configure static IP addresses on network devices like routers, switches, firewalls and servers while we dynamically assign IP addresses to computers, laptops, tablets, smartphones etc. The dynamic method uses DHCP (Dynamic Host Configuration Protocol) and in this short article I want to show you how it works. Let’s take a look at the following picture:

DHCP Topology

On the left side we have a computer without IP address. On the right side there’s a DHCP server configured with static IP address 192.168.1.254. This DHCP server will supply an IP address to our computer, this is how it works:

DHCP Discover

The computer will send a DHCP discover message. This is a broadcast because it doesn’t have an IP address and it doesn’t know if there is a DHCP server on the network. Of course in our scenario we do have a DHCP server so it will respond to this broadcast as following:

DHCP Offer

The DHCP server will respond with a DHCP offer message which contains an IP address for the computer (we have to configure the DHCP server to define which IP addresses we want to give). If we want we can also assign a default gateway and DNS server(s) to the computer. The computer will respond to this information:

DHCP Request

The computer will send a DHCP Request in response to the DHCP offer message, asking nicely if it’s OK to use the information that it has received. Our DHCP server will respond to this as following:

DHCP ACK

The DHCP server will respond with a DHCP ACK message to tell the computer it’s OK
  • Before installing WDS we have to create a new partition to hold our image files
    1. Open Server Manager
    2. Click Storage
    3. Click Disk Management
    4. Right click Unallocated
    5. Click Create New Volume
    6. Click Next
    7. Click Next
    8. Change drive letter to I
    9. File: NTFS
    10. Allocation: default
    11. Click Next
    12. Volume label: Images
    13. Check Perform Quick Format
    14. Click Next
    15. Click Finish
pic1
  • Open Server Manager
    1. Click Roles in menu at top left
    2. Click Add Roles at right
pic2
  • Check Skip this page by default
  • Click Next
pic1
  • Select Server Roles
    1. Check DHCP
    2. Check Windows Deployment Services
    3. Click Next
pic2
  • Overview of Windows Deployment Services
    1. Click Next
pic3
  • Select Roles Services
    1. Click Next
pic4
  • Check box next to 192.168.9.1
  • Click Next
pic8
  • Specify IPv4 DNS Server Settings
    1. Parent Domain: Adatum9.com
    2. Preferred DNS Server IPv4 Address: 192.168.9.1
    3. Alternate DNS Server IPv4 Address: 192.168.9.2 (Virtual Server)
    4. Click Next
pic6
  • Specify IPv4 WINS Server Settings
    1. Check radio button next to: WINS is not required for applications on this network
    2. Click Next
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  • Add or Edit DHCP Scopes
    1. Click Add
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  • Add Scope
    1. Scope Name: scope9
    2. Starting IP Address: 192.168.9.1
    3. Ending Ip Address: 192.168.9.10
    4. Subnet Mask: 255.255.255.0
    5. Default Gateway (optional): 192.168.9.1
    6. Subnet Type: Wired (lease duration will be 6 days)
    7. Click OK
  • Click Next
pic9
  • Configure DHCPv6 Stateless Mode
    1. Check Disable DHCPv6 stateless mode for this server.
    2. Click Next
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  • Authorize DHCP Server
    1. Check Use current credentials
    2. Click Next
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  • Confirm Installation Selections
    1. Click Install
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  • Installation Results
    1. Click Close
  • Go to Start\Administrative Tools\DHCP
  • Click Properties
  • Click + beside of DHCP
  • Click + beside of IPv4
  • Right click Scope and choose Properties
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  • Click Advanced tab
  • Check Both
  • Click OK
  • How to exclude a range of ip addresses from the DHCP pool.
  • Right click the address pool
  • Click New Exclusion Range
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  • 192.168.9.1
  • 192.168.9.2
  • Click Add
  • Click Close
  • Close DHCP Window

2 comments:

  1. raghu16 April 2014 at 11:44

    hai it was so nice very informative.....
    can you explain how can i do reservation in dhcp......and i am using virtulization machine......for understanding my self my os is
    windows server 2008 but what happened wrong is when i reserve ip addres to a user it was created bt when i am checking in my user acc then it is showing the default ip rather than which i have assigned how can i resolve this......?

    ReplyDelete
  2. Unknown9 May 2014 at 03:32

    In the DHCP snap-in, expand the scope for which you want to create a reservation.

    Select and right-click Reservations, and then click New Reservation.

    In the NewReservation dialog box, enter the Reservation name, IP address, MAC address, and Description of the reservation.

    Select the appropriate Supported types: DHCP only, BOOTP only, or Both.

    Click Add.

    ReplyDelete

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