Chapter 1 Dhcp Overview; Introduction To Dhcp - H3C S3100-52P Operation Manual

Operation Manual – DHCP
H3C S3100-52P Ethernet Switch
When configuring DHCP, go to these sections for information you are interested in:

Introduction to DHCP

DHCP IP Address Assignment
DHCP Packet Format
Protocol Specification
Note:
Support for DHCP Snooping Option 82 is added in this manual. For details, see
Introduction to DHCP-Snooping Option 82
Support Option 82.
IP filtering is added in this manual. For details, see
Configuring IP Filtering.
The DHCP packet rate limit function is added in this manual. For details, refer to
DHCP Packet Rate Limit Configuration.
1.1 Introduction to DHCP
With networks getting larger in size and more complicated in structure, lack of available
IP addresses becomes the common situation the network administrators have to face,
and network configuration becomes a tough task for the network administrators. With
the emerging of wireless networks and the using of laptops, the position change of
hosts and frequent change of IP addresses also require new technology. Dynamic Host
Configuration Protocol (DHCP) is developed to solve these issues.
DHCP adopts a client/server model, where the DHCP clients send requests to DHCP
servers for configuration parameters; and the DHCP servers return the corresponding
configuration information such as IP addresses to implement dynamic allocation of
network resources.
A typical DHCP application includes one DHCP server and multiple clients (such as
PCs and laptops), as shown in

Chapter 1 DHCP Overview

Figure 1-1.
and Configuring DHCP Snooping to
Introduction to IP Filtering
1-1
Chapter 1 DHCP Overview
and