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308 CHAPTER 20: IP ADDRESS COMMANDS
Example
The following example configures VLAN 1 with IP address 131.108.1.27
and subnet mask 255.255.255.0.
ip address dhcp The ip address dhcp Interface Configuration (default VLAN) mode
command acquires an IP address for an Ethernet interface from the
Dynamic Host Configuration Protocol (DHCP) server. To deconfigure an
acquired IP address, use the no form of this command.
Syntax
ip address dhcp [hostname host-name]
no ip address dhcp
Parameters
■ host-name — Specifies the name of the host to be placed in the DHCP
option 12 field. This name does not have to be the same as the host
name specified in the hostname Global Configuration mode
command. (Range: 1-20 characters)
Default Configuration
This command has no default configuration.
Command Mode
Interface Configuration (default VLAN) mode
User Guidelines
This command is only functional if the device is in Switch mode.
The ip address dhcp command allows any interface to dynamically learn
its IP address by using the DHCP protocol.
Some DHCP servers require that the DHCPDISCOVER message have a
specific host name. The ip address dhcp hostname host-name
command is most typically used when the host name is provided by the
system administrator.
Console(config)# interface vlan 1
Console(config-if)# ip address 131.108.1.27 255.255.255.0