Redes

DHCP Commands
Use the commands in this chapter to configure and monitor Dynamic Host Configuration Protocol (DHCP). For DHCP configuration information and examples, refer to the “Configuring DHCP” chapter of the Cisco IOS IP Configuration Guide.

Cisco IOS IP Command Reference, Volume 1 of 3: Addressing and Services

IP1R-103

DHCP Commands bootfile

bootfile
To specify the name of thedefault boot image for a Dynamic Host Configuration Protocol (DHCP) client, use the bootfile DHCP pool configuration command. To delete the boot image name, use the no form of this command. bootfile filename no bootfile

Syntax Description

filename

Specifies the name of the file that is used as a boot image.

Defaults

No default behavior or values.

Command Modes

DHCP poolconfiguration

Command History

Release 12.0(1)T

Modification This command was introduced.

Examples

The following example specifies xllboot as the name of the boot file:
bootfile xllboot

Related Commands

Command ip dhcp pool next-server

Description Configures a DHCP address pool on a Cisco IOS DHCP Server and enters DHCP pool configuration mode. Configures the next server in theboot process of a DHCP client.

Cisco IOS IP Command Reference, Volume 1 of 3: Addressing and Services

IP1R-104

DHCP Commands clear ip dhcp binding

clear ip dhcp binding
To delete an automatic address binding from the Cisco IOS Dynamic Host Configuration Protocol (DHCP) Server database, use the clear ip dhcp binding privileged EXEC command. clear ip dhcp binding {address | * }Syntax Description

address *

The address of the binding you want to clear. Clears all automatic bindings.

Command Modes

Privileged EXEC

Command History

Release 12.0(1)T

Modification This command was introduced.

Usage Guidelines

Typically, the address denotes the IP address of the client. If the asterisk (*) character is used as the address parameter, DHCP clears allautomatic bindings. Use the no ip dhcp pool global configuration command to delete a manual binding.

Examples

The following example deletes the address binding 10.12.1.99 from a DHCP server database:
Router# clear ip dhcp binding 10.12.1.99

Related Commands

Command show ip dhcp binding

Description Displays address bindings on the Cisco IOS DHCP Server.

Cisco IOS IP Command Reference,Volume 1 of 3: Addressing and Services

IP1R-105

DHCP Commands clear ip dhcp conflict

clear ip dhcp conflict
To clear an address conflict from the Cisco IOS Dynamic Host Configuration Protocol (DHCP) Server database, use the clear ip dhcp conflict privileged EXEC command. clear ip dhcp conflict {address | *}

Syntax Description

address *

The IP address of the host that contains theconflicting address you want to clear. Clears all address conflicts.

Command Modes

Privileged EXEC

Command History

Release 12.0(1)T

Modification This command was introduced.

Usage Guidelines

The server detects conflicts using a ping session. The client detects conflicts using gratuitous Address Resolution Protocol (ARP). If the asterisk (*) character is used as the addressparameter, DHCP clears all conflicts.

Examples

The following example shows an address conflict of 10.12.1.99 being deleted from the DHCP server database:
Router# clear ip dhcp conflict 10.12.1.99

Related Commands

Command show ip dhcp conflict

Description Displays address conflicts found by a Cisco IOS DHCP Server when addresses are offered to the client.

Cisco IOS IP CommandReference, Volume 1 of 3: Addressing and Services

IP1R-106

DHCP Commands clear ip dhcp server statistics

clear ip dhcp server statistics
To reset all Cisco IOS Dynamic Host Configuration Protocol (DHCP) Server counters, use the clear ip dhcp server statistics privileged EXEC command. clear ip dhcp server statistics

Syntax Description

This command has no arguments or keywords....