Moac291 Week02

11

IMPLEMENTING DHCPIMPLEMENTING DHCP

Chapter 1Chapter 1

Chapter 1: IMPLEMENTING DHCPChapter 1: IMPLEMENTING DHCP 22

HISTORY OF DHCPHISTORY OF DHCP


THE ROLE OF DHCPTHE ROLE OF DHCP

Dynamically assigns TCP/IP addresses

Dynamically assigns TCP/IP configuration information

Simplifies network administration

Dynamically assigns TCP/IP addresses

Dynamically assigns TCP/IP configuration information

Simplifies network administration


DYNAMIC VERSUS MANUAL TCP/IP ADDRESS ASSIGNMENTDYNAMIC VERSUS MANUAL TCP/IP ADDRESS ASSIGNMENT

MMaannuuaall TTCCPP//IIPP CCoonnffiigguurraattiioonn AAuuttoommaattiicc TTCCPP//IIPP CCoonnffiigguurraattiioonn

IP addresses entered manuallyon each client computer

IP addresses are supplied auto-matically to client computers

Possibility of entering incorrector invalid IP address

Ensures that client always usescorrect configuration information

Incorrect configuration canlead to communicationand network issues

Client configuration updatedautomatically to reflect network

changes

Administrative overload onnetworks on which computersare frequently moved

Elimination of source of networkproblems


MANUAL TCP/IP ADDRESSINGMANUAL TCP/IP ADDRESSING


DYNAMIC TCP/IP ADDRESS ASSIGNMENTDYNAMIC TCP/IP ADDRESS ASSIGNMENT


DHCP SERVER REQUIREMENTSDHCP SERVER REQUIREMENTS

DHCP server requirements Microsoft Windows NT, Windows 2000, or

Windows Server 2003 Server products

The DHCP Server service installed on the server

Static IP address, subnet mask, and default gateway

Valid range of addresses

DHCP server requirements Microsoft Windows NT, Windows 2000, or

Windows Server 2003 Server products

The DHCP Server service installed on the server

Static IP address, subnet mask, and default gateway

Valid range of addresses


DHCP CLIENT REQUIREMENTSDHCP CLIENT REQUIREMENTS

DHCP client requirements Windows XP or Windows 2000

Microsoft Windows NT 3.51 or later

Microsoft Windows 95 or Microsoft Windows 98

Microsoft Windows 3.11 for Workgroups with TCP/IP-32

Microsoft Network Client 3 for MS-DOS

LAN Manager 2.2c

Other non-Microsoft operating systems

DHCP client requirements Windows XP or Windows 2000

Microsoft Windows NT 3.51 or later

Microsoft Windows 95 or Microsoft Windows 98

Microsoft Windows 3.11 for Workgroups with TCP/IP-32

Microsoft Network Client 3 for MS-DOS

LAN Manager 2.2c

Other non-Microsoft operating systems


KEY BENEFITS OF DHCPKEY BENEFITS OF DHCP

Centralized administration of IP configuration

Dynamic host configuration

Seamless IP host configuration

Flexibility

Scalability

Centralized administration of IP configuration

Dynamic host configuration

Seamless IP host configuration

Flexibility

Scalability


HOW THE DHCP PROCESS WORKSHOW THE DHCP PROCESS WORKS


DHCP MESSAGE TYPESDHCP MESSAGE TYPES

Used by clients to obtain additional TCP/IP addresses

DDHHCCPP MMeessssaaggee TTyyppee DDeessccrriippttiioonn

DHCPDISCOVERUsed by clients to request configuration parametersfrom a DHCP server

DHCPOFFER Used by servers to offer IP addresses to requestingclients

DHCPREQUESTUsed by clients to accept or renew IP addressassignment and to decline unaccepted servers

DHCPDECLINE Used by clients to reject an offered IP address

DHCPACK Used by servers to acknowledge a client’sacceptance of an offered IP address

DHCPNACK Used by servers to reject a client’s acceptance of anoffered IP address

DHCPRELEASE Used by clients to terminate an IP address lease

DHCPINFORM


THE INITIAL DHCP LEASE PROCESSTHE INITIAL DHCP LEASE PROCESS


DHCP LEASE RENEWAL PROCESSDHCP LEASE RENEWAL PROCESS


WHAT HAPPENS WHEN A CLIENT CHANGES SUBNETS?WHAT HAPPENS WHEN A CLIENT CHANGES SUBNETS?


WHAT IS A DHCP RELAY AGENT?WHAT IS A DHCP RELAY AGENT?


HOW DOES AUTOMATIC PRIVATE IP ADDRESSING (APIPA) WORK?HOW DOES AUTOMATIC PRIVATE IP ADDRESSING (APIPA) WORK?


ALTERNATE TCP/IP ADDRESS CONFIGURATIONALTERNATE TCP/IP ADDRESS CONFIGURATION


AUTHORIZING A DHCP SERVER IN ACTIVE DIRECTORYAUTHORIZING A DHCP SERVER IN ACTIVE DIRECTORY


WHAT IS A DHCP SCOPE?WHAT IS A DHCP SCOPE?


DHCP ADDRESS EXCLUSIONSDHCP ADDRESS EXCLUSIONS


MULTICAST ADDRESS CONFIGURATION USING DHCPMULTICAST ADDRESS CONFIGURATION USING DHCP

The multicast address range is 224.0.0.0 through 239.255.255.255.The multicast address range is 224.0.0.0 through 239.255.255.255.


DHCP LEASE DURATIONDHCP LEASE DURATION


WHAT ARE DHCP CLIENT RESERVATIONS?WHAT ARE DHCP CLIENT RESERVATIONS?

Client reservations permanently reserve a specific address for a specific client.Client reservations permanently reserve a specific address for a specific client.


WHAT ARE DHCP SCOPE OPTIONS?WHAT ARE DHCP SCOPE OPTIONS?


VERIFYING DHCP SCOPE OPTIONSVERIFYING DHCP SCOPE OPTIONS


ACTIVATING A DHCP SCOPEACTIVATING A DHCP SCOPE


HOW TO CONFIGURE A DHCP RELAY AGENTHOW TO CONFIGURE A DHCP RELAY AGENT


WHAT ARE DHCP SUPERSCOPES?WHAT ARE DHCP SUPERSCOPES?


SUPERSCOPES WITH REMOTE NETWORKSSUPERSCOPES WITH REMOTE NETWORKS


MULTIPLE DHCP SERVERS ON THE SAME SUBNETMULTIPLE DHCP SERVERS ON THE SAME SUBNET


SUMMARYSUMMARY

Advantages and disadvantages of DHCP

How to install and configure DHCP

DHCP in an Active Directory network

Scopes and superscopes

DHCP in a routed network

Advantages and disadvantages of DHCP

How to install and configure DHCP

DHCP in an Active Directory network

Scopes and superscopes

DHCP in a routed network

Moac291 Week02

Technology

Transcript of Moac291 Week02