Dhcp Overview; Introduction To Dhcp - HP 4800G Series Configuration Manual

This document is organized as follows:

DHCP Overview

DHCP Server Configuration
DHCP Relay Agent Configuration
DHCP Client Configuration
DHCP Snooping Configuration
BOOTP Client Configuration
1
DHCP Overview

Introduction to DHCP

The fast expansion and growing complexity of networks result in scarce IP addresses assignable to
hosts. Meanwhile, as many people need to take their laptops across networks, the IP addresses need
to be changed accordingly. Therefore, related configurations on hosts become more complex. The
Dynamic Host Configuration Protocol (DHCP) was introduced to solve these problems.
DHCP is built on a client-server model, in which a client sends a configuration request and then the
server returns a reply to send configuration parameters such as an IP address to the client.
A typical DHCP application, as shown in
and laptops).
Figure 1-1 A typical DHCP application
A DHCP client can get an IP address and other configuration parameters from a DHCP server on
another subnet via a DHCP relay agent. For information about the DHCP relay agent, refer to
Introduction to DHCP Relay
Figure 1-1, includes a DHCP server and multiple clients (PCs
Agent.
1-1