Dhcp Overview; Dhcp Network Model; Dhcp Address Allocation; Allocation Mechanisms - H3C SR8800-F Configuration Manual

DHCP overview

DHCP network model

The Dynamic Host Configuration Protocol (DHCP) provides a framework to assign configuration
information to network devices.
Figure 23 shows a typical DHCP application scenario where the DHCP clients and the DHCP server
reside on the same subnet. The DHCP clients can also obtain configuration parameters from a
DHCP server on another subnet through a DHCP relay agent. For more information about the DHCP
relay agent, see
Figure 23 A typical DHCP application

DHCP address allocation

Allocation mechanisms

DHCP supports the following allocation mechanisms:
•
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.
"Configuring the DHCP relay agent."
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