3Com 4800G Series, Configuration Manual

Page: 824 / 1246

824 C
HAPTER
59: DHCP C
LIENT
C
ONFIGURATION
n
■
An interface can be configured to acquire an IP address in multiple ways, but
these ways are exclusive. The latest configuration will overwrite the previous
configuration.
■
After the DHCP client is enabled on an interface, no secondary IP address is
configurable for the interface.
■
If the IP address assigned by the DHCP server shares a network segment with
the IP addresses of other interfaces on the device, the DHCP client enabled
interface will not request any IP address of the DHCP server unless the
conflicted IP address is manually deleted and the interface is made UP again by
first executing the
shutdown command and then the undo shutdown
command or the DHCP client is enabled on the interface by executing the
undo ip address dhcp-alloc and ip address dhcp-alloc commands in
sequence.
Displaying and
Maintaining the DHCP
Client
DHCP Client
Configuration
Example
Network requirements
On a LAN, Switch B contacts the DHCP server via VLAN-interface 1 to obtain an IP
address.
Network diagram
See Figure 246.
Configuration procedure
The following is the configuration on Switch B shown in Figure 246.
# Enable the DHCP client on VLAN-interface 1.
<SwitchB> system-view
[SwitchB] interface vlan-interface 1
[SwitchB-Vlan-interface1] ip address dhcp-alloc
n
To implement the DHCP client-server model, you need to perform related
configuration on the DHCP server. For details, refer to “DHCP Server Configuration
Examples” on page 809.
Enable the DHCP client on the
interface ip address dhcp-alloc
[ client-identifier mac
interface-type
interface-number
]
Required
Disabled by default.
To do… Use the command… Remarks
To do… Use the command… Remarks
Display specified
configuration information display dhcp client
[ verbose ] [ interface
interface-type
interface-number
]
Available in any view