Raisecom
ISCOM2600G-HI (A) Series Configuration Guide
6 DHCP
Raisecom Proprietary and Confidential
Copyright © Raisecom Technology Co., Ltd.
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6
DHCP
This chapter describes basic principles and configurations procedures of DHCP, and providing
related configuration examples, including the following sections:
6.1 DHCP Client
6.1.1 Introduction
Dynamic Host Configuration Protocol (DHCP) refers to the protocol which assigns
configurations, such as the IP address, to users on the TCP/IP network. Based on BOOTP
(Bootstrap Protocol) protocol, it has additional features, such as automatically assigning
available network addresses, reusing network addresses, and other extended configuration
features.
With the enlargement of network scale and development of network complexity, the number
of PCs on a network usually exceeds the maximum number of distributable IP addresses.
Meanwhile, the widely use of laptops and wireless networks lead to frequent changes of
locations and also related IP addresses must be updated frequently. As a result, network
configurations become more and more complex. DHCP is developed to solve these problems.
DHCP adopts client/server communication mode. A client applies for configurations to the
server (including the IP address, subnet mask, and default gateway), and the server replies
with IP address to the client and other related configurations to implement dynamic
configurations.
Typical applications of DHCP usually include a set of DHCP server and multiple clients (such
as the PC or laptop), as shown in Figure 6-1.