Dell PowerEdge FX2/FX2s - Manual (Page 63)

Dell# renew dhcp interface tengigabitethernet 0/1
Dell#May 27 15:55:28: %STKUNIT0-M:CP %DHCLIENT-5-DHCLIENT-LOG:
DHCLIENT_DBG_EVT: Interface Ma 0/0 :
DHCP RENEW CMD Received in state STOPPED
May 27 15:55:31: %STKUNIT0-M:CP %DHCLIENT-5-DHCLIENT-LOG: DHCLIENT_DBG_EVT:
Interface Ma 0/0 :
Transitioned to state SELECTING
May 27 15:55:31: %STKUNIT0-M:CP %DHCLIENT-5-DHCLIENT-LOG: DHCLIENT_DBG_PKT:
DHCP DISCOVER sent in Interface Ma 0/0
May 27 15:55:31: %STKUNIT0-M:CP %DHCLIENT-5-DHCLIENT-LOG: DHCLIENT_DBG_PKT:
Received DHCPOFFER packet in Interface Ma 0/0 with Lease-Ip:10.16.134.250,
Mask:255.255.0.0,Server-Id:10.16.134.249
DHCP Client
An Aggregator is auto-configured to operate as a DHCP client. The DHCP client functionality is enabled
only on the default VLAN and the management interface.
A DHCP client is a network device that requests an IP address and configuration parameters from a DHCP
server. On an Aggregator, the DHCP client functionality is implemented as follows:
• The public out-of-band management (OOB) interface and default VLAN 1 are configured, by default,
as a DHCP client to acquire a dynamic IP address from a DHCP server.
You can override the DHCP-assigned address on the OOB management interface by manually
configuring an IP address using the CLI or CMC interface. If no user-configured IP address exists for
the OOB interface exists and if the OOB IP address is not in the startup configuration, the Aggregator
will automatically obtain it using DHCP.
You can also manually configure an IP address for the VLAN 1 default management interface using the
CLI. If no user-configured IP address exists for the default VLAN management interface exists and if
the default VLAN IP address is not in the startup configuration, the Aggregator will automatically
obtain it using DHCP.
• The default VLAN 1 with all ports configured as members is the only L3 interface on the Aggregator.
When the default management VLAN has a DHCP-assigned address and you reconfigure the default
VLAN ID number, the Aggregator:
– Sends a DHCP release to the DHCP server to release the IP address.
– Sends a DHCP request to obtain a new IP address. The IP address assigned by the DHCP server is
used for the new default management VLAN.
How DHCP Client is Implemented
The Aggregator is enabled by default to receive DHCP server-assigned dynamic IP addresses on an
interface. This setting persists after a switch reboot. If you enter the shutdown command on the
interface, DHCP transactions are stopped and the dynamically-acquired IP address is saved. Use the show
interface type slot/port command to display the dynamic IP address and DHCP as the mode of
IP address assignment. If you later enter the no shutdown command and the lease timer for the
dynamic IP address has expired, the IP address is unconfigured and the interface tries to acquire a new
dynamic address from DHCP server.
If you later enter the no shutdown command and the lease timer for the dynamic IP address has
expired, the IP address is released.
When you enter the release dhcp command, although the IP address that was dynamically-acquired
from a DHCP server is released from an interface, the ability to acquire a new DHCP server-assigned
Dynamic Host Configuration Protocol (DHCP) 63