Alcatel-Lucent ls 6248 User Guide

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Command Line Interface
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Default Setting
This command has no default configuration.
Command Mode
Interface Configuration (Ethernet, VLAN, port-channel) mode
Command Usage 
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.
If the device is configured to obtain its IP address from a DHCP server, it 
sends a DHCPDISCOVER message to provide information about itself to the 
DHCP server on the network.
If the 
ip address dhcp
 command is used with or without the optional keyword, 
the DHCP option 12 field (host name option) is included in the DISCOVER 
message. By default, the specified DHCP host name is the globally configured 
host name of the device. However, the 
ip address dhcp hostname
 host-name 
command can be used to place a different host name in the DHCP option 12 
field.
The 
no ip address dhcp
 command deconfigures any IP address that was 
acquired, thus sending a DHCPRELEASE message. 
Example
The following example acquires an IP address for Ethernet port 1/e16 from DHCP.
Related Commands
ip default-gateway
The 
ip default-gateway 
Global Configuration mode command defines a default 
gateway ( device). To return to the default configuration, use the no form of this 
command.
Syntax
ip default-gateway
 ip-address
no ip default-gateway
Console(config)# 
interface ethernet
 1/e16
Console(config-if)# 
ip address dhcp