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ip default-gateway 309
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, and sends a DHCPRELEASE message.
Example
The following example acquires an IP address for Ethernet port g16 from
DHCP.
ip default-gateway The ip default-gateway Global Configuration mode command defines
a default gateway (device). To restore the default configuration, use the
no form of this command.
Syntax
ip default-gateway ip-address
no ip default-gateway
Parameters
■ ip-address — Specifies the valid IP address of the currently defined
default gateway.
Default Configuration
No default gateway is defined.
Command Mode
Global Configuration mode
User Guidelines
Console(config)#
interface ethernet
g16
Console(config-if)#
ip address dhcp