User's Manual

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DHCP server withdraws the IP. To continue to use this IP, the DHCP client needs to apply it again.
52.2 Configuring DHCP Client
52.2.1 Configuration Task List of DHCP Client
 Obtaining an IP address
 Specifying an address for DHCP server
 Configuring DHCP parameters
 Monitoring DHCP
52.2.2 DHCP Client Configuration Tasks
(1) Obtaining an IP address
Run the following command on the VLAN interface to obtain an IP address through the DHCP protocol for an
interface.
Command Purpose
ip address dhcp
Sets the IP address of an Ethernet interface
through DHCP.
(2) Specifying an Address for DHCP Server
If knowing the addresses of some DHCP servers, you can specify these servers’ addresses on SWITCH so as
to reduce the time of protocol processing. You can run the following command in global mode:
Command Purpose
ip dhcp-server ip-address
Specifies the IP address of the DHCP server.
The command is optional when you perform operations to "obtain an IP address".
(3) Configuring DHCP Parameters
To adjust the parameters of DHCP communication according to actual requirements, run the following
commands in global mode:
Command Purpose
ip dhcp client minlease seconds
Specifies the acceptable minimum lease time.
ip dhcp client retransmit count
Specifies the retransmission times for DHCP
packet.
ip dhcp client select seconds
Specifies the interval for SELECT.
ip dhcp client class_identifier WORD
Specifies the classification code of the