HP VPN Firewall Appliances Network Management Configuration Guide

205

Configuring DHCP client

The DHCP client configuration is supported only on Layer 3 Ethernet interfaces (or subinterfaces), VLAN

interfaces, and Layer 3 aggregate interfaces.

You cannot configure an interface of an aggregation group as a DHCP client.

When multiple VLAN interfaces with the same MAC address use DHCP for IP address acquisition

through a relay agent, the DHCP server cannot be a Windows Server 2000 or Windows Server 2003.

Introduction to DHCP client

With DHCP client enabled, an interface uses DHCP to obtain configuration parameters such as an IP

address from the DHCP server.

Configuring the DHCP client in the Web interface

For more information about configuring the DHCP client in the Web interface, see "Configuring

interfaces management."

Configuring the DHCP client at the CLI

Enabling the DHCP client on an interface

To enable the DHCP client on an interface:

Ste

Command

Remarks

1. Enter system view.

system-view N/A

2. Enter interface view.

interface interface-type interface-number N/A

3. Enable the DHCP client on the

interface.

ip address dhcp-alloc [ client-identifier mac

interface-type interface-number ]

Disabled by default.

An interface can be configured to acquire an IP address in multiple ways. The latest configuration

overwrites the previous one.

Secondary IP addresses cannot be configured on an interface that is enabled with the DHCP client.

If the IP address that interface A obtains from the DHCP server is on the same network segment as the IP

address of interface B, interface A neither uses the IP address nor requests any IP address from the DHCP

server, unless the IP address of interface B is manually deleted and interface A is brought up again by

first executing the shutdown command and then the undo shutdown command or the DHCP client is

re-enabled on interface A by executing the undo ip address dhcp-alloc command and then the ip

address dhcp-alloc command.