Configuring and troubleshooting DHCP

Lesson 1: Overview of the DHCP Server Role

• Benefits of Using DHCP
• New DHCP Features in Windows Server 2008
• How DHCP Allocates IP Addresses
• How DHCP Lease Generation Works
• How DHCP Lease Renewal Works
• DHCP Server Authorization
• Demonstration: Adding the DHCP Server Role

Benefits of Using DHCP

DHCP reduces the complexity and amount of administrative
work by using automatic TCP/IP configuration
Manual TCP/IP Configuration
• IP addresses are entered
manually
• IP address could be entered
incorrectly
• Communication and network
issues can result
• Frequent computer moves
increase administrative effort

New DHCP Features in Windows Server 2008

New DHCP features include:
• Windows Server 2008 Support for DHCPv6
• Support for advanced network security
configuration using NAP
• DHCP on Server Core

How DHCP Lease Generation Works

1-DHCP client broadcasts a DHCPDISCOVER packet
2-DHCP servers broadcast a DHCPOFFER packet
3-DHCP client broadcasts a DHCPREQUEST packet
4-DHCP Server1 broadcasts a DHCPACK packet
5-DHCP client broadcasts a DHCPDISCOVER packet

Demonstration: Adding the DHCP Server Role

In this demonstration, you will see how to add and authorize the DHCP Server role

Lesson 2: Configuring DHCP Scopes and Options

• What Are DHCP Scopes?
• What Are Superscopes and Multicast Scopes?
• Demonstration: Configuring DHCP Scopes
• What Are DHCP Options?
• What Are DHCP Class-Level Options?
• What Is a DHCP Reservation?
• DHCP Sizing and Availability
• How DHCP Options Are Applied
• Demonstration: Configuring DHCP Options

Demonstration: Configuring DHCP Scopes

In this demonstration, you will see how to:
• Create and authorize a DHCP scope
• Configure a DHCP superscope

What Are DHCP Options?

DHCP options are values for common configuration data
that applies to the server, scopes, reservations, and
class options
• DNS Servers
• DNS Name
• WINS Servers
• Default Gateway

How DHCP Options Are Applied

DHCP options can be applied at various levels:
• Server
• Scope
• Reserved client
• Class

Lesson 3: Managing a DHCP Database

• Overview of DHCP Management Scenarios
• What Is a DHCP Database?
• How a DHCP Database Is Backed Up and Restored
• How a DHCP Database Is Reconciled
• Moving a DHCP Database
• DHCP Server Configuration Options
• Demonstration: Managing a DHCP Database

Overview of DHCP Management Scenarios

The DHCP service needs to be managed to respond to
network changes
• Managing DHCP database growth
• Protecting the DHCP database
• Ensuring DHCP database consistency
• Adding clients
• Adding new network service servers
• Adding new subnets

What Is a DHCP Database?

• Windows Server 2003 stores the DHCP database in the
%Systemroot%\System32\Dhcp folder
• The DHCP database files include:
• Dhcp.mdb
• Tmp.edb
• J50.log and J50*.log
• Res*.log
• J50.chk
The DHCP database is a dynamic database that contains
configuration information
• The DHCP database contains DHCP configuration data such as:
• Scopes
• Address leases
• Reservations