Dhcp Overview; Introduction To Dhcp; Dhcp Address Allocation; Allocation Mechanisms - HP A5120 EI Series Configuration Manual

DHCP overview

Introduction to DHCP

The Dynamic Host Configuration Protocol (DHCP) provides a framework to assign configuration
information to network devices. It uses the client/server model.
A typical DHCP application, as shown in
laptops).
Figure 13 A typical DHCP application
DHCP client
DHCP client
NOTE:
A DHCP client can obtain an IP address and other configuration parameters from a DHCP server on
another subnet via a DHCP relay agent. For more information about the DHCP relay agent, see the
chapter ―DHCP relay agent configuration.‖

DHCP address allocation

Allocation mechanisms

DHCP supports the following mechanisms for IP address allocation.
Static allocation: The network administrator assigns an IP address to a client, such as a WWW

server, and DHCP conveys the assigned address to the client.
Automatic allocation: DHCP assigns a permanent IP address to a client.

Dynamic allocation: DHCP assigns an IP address to a client for a limited period of time, which is

called a lease. Most DHCP clients obtain their addresses in this way.
DHCP client
DHCP server
DHCP client
Figure 13, includes a DHCP server and multiple clients (PCs and
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