Dell S4048T, Configuration Manual

Page: 354 / 1277

• To re-enable BMP mode for the next reload, enter the
reload-type jump-start
command.
Configuring the DHCP Client System
This section describes how to configure and view an interface as a DHCP client to receive an IP address.
Dell Networking OS Behavior: The
ip address dhcp
command enables DHCP server-assigned dynamic
addresses on an interface. The setting persists after a switch reboot. To stop DHCP transactions and save the
dynamically acquired IP address, use the
shutdown
command on the interface. To display the dynamic IP
address and show DHCP as the mode of IP address assignment, use the
show interface type slot/
port [ /subport ]
command. To unconfigure the IP address, use the
no shutdown
command when the
lease timer for the dynamic IP address is expired. The interface acquires a new dynamic IP address from the
DHCP server.
To configure a secondary (backup) IP address on an interface, use the
ip address
command at the
INTERFACE configuration level.
Use the
no ip address dhcp
command to:
• Release the IP address dynamically acquired from a DHCP server from the interface.
• Disable the DHCP client on the interface so it cannot acquire a dynamic IP address from a DHCP server.
• Stop DHCP packet transactions on the interface.
When you enter the
release dhcp
command, the IP address dynamically acquired from a DHCP server is
released from an interface. The ability to acquire a new DHCP server-assigned address remains in the running
configuration for the interface. To acquire a new IP address, use the
renew DHCP
command in EXEC Privilege
mode or the
ip address dhcp
command in INTERFACE Configuration mode.
To manually configure a static IP address on an interface, use the
ip address
command. A prompt displays
to release an existing dynamically acquired IP address. If you confirm, the ability to receive a DHCP server-
assigned IP address is removed.
To enable acquiring a dynamic IP address from a DHCP server on an interface configured with a static IP
address, use the
ip address dhcp
command. A prompt displays to confirm the IP address reconfiguration.
If you confirm, the statically configured IP address is released. An error message displays if you enter the
release dhcp
or
renew dhcp
commands.
To renew the lease time of the dynamically acquired IP, use the
renew dhcp
command on an interface
already configured with a dynamic IP address.
NOTE: To verify the currently configured dynamic IP address on an interface, use the
show ip dhcp
lease
command. The
show running-configuration
command output only displays ip address dhcp .
The currently assigned dynamic IP address does not display.
To configure and view an interface as a DHCP client to receive an IP address, use the following commands.
1 Enter INTERFACE Configuration mode on an Ethernet interface.
CONFIGURATION mode
interface type slot/port [ /subport ]
2 Acquire the IP address for an Ethernet interface from a DHCP network server.
INTERFACE mode
Dynamic Host Configuration Protocol (DHCP) 354