DELL 8132 ユーザーズマニュアル

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DHCP Management Interface Commands
release dhcp
Use the release dhcp command in Privileged EXEC mode to force the 
DHCPv4 client to release a leased address.
Syntax
release dhcp 
interface-id
Parameter Description
Default Configuration
This command has no default configuration.
Command Mode
Privileged EXEC
User Guidelines
The DHCP client sends a DHCP RELEASE message telling the DHCP 
server that it no longer needs the IP address, and that the IP address can be 
reassigned to another client. The interface method does not change and will 
still be DHCP even after issuing this command. To lease an IP address again, 
issue either the renew dhcp 
interface-id command below or 
 command on page 494 in interface mode. If the IPv4 
address on the interface was not assigned by DHCP, then the command fails 
and displays the following error message:
Interface does not have a DHCP-originated address.
The release dhcp option is applicable only for routing interfaces and not for 
Out-of-Band port. Use the 
 
none
 command on the 
Out-of-Band interface to clear a DHCP-acquired address.
Parameter
Description
interface-id
Any valid VLAN interface. See 
for interface representation.
2CSPC4.X8100-SWUM102.book  Page 352  Friday, March 15, 2013  8:56 AM