Command Reference

ip dhcp database

You can configure a Cisco IOS Dynamic Host Configuration Protocol (DHCP) Server to save automatic bindings on a remote host called a database agent. To configure a DHCP server database agent and database agent parameters, use the ip dhcp database global configuration command. Use the no form of this command to remove the database agent.

ip dhcp database url [timeout seconds write-delay seconds]

no ip dhcp database url

Syntax Description

url

Specifies the remote file used to store the automatic bindings.

 

Following are the acceptable URL file formats:

 

tftp://host/filename

 

ftp://user:password@host/filename

 

rcp://user@host/filename

timeout seconds

(Optional) Specifies how long, in seconds, the DHCP server should

 

wait before aborting a database transfer. Transfers that exceed the

 

timeout period are aborted. By default, DHCP waits 300 seconds

 

before aborting a database transfer. Infinity is defined as 0 seconds.

write-delay seconds

(Optional) Specifies how soon the DHCP server should send database

 

updates. By default, DHCP waits 300 seconds (5 minutes) before

 

sending database changes. The minimum delay is 60 seconds.

Defaults

DHCP waits 300 seconds for both a write delay and a timeout.

Command Modes

Global configuration

Usage Guidelines

This command first appeared in Cisco IOS Release 12.0(1)T.

The administrator may configure multiple database agents. Bindings are transferred by using the File Transfer Protocol (FTP), Trivial File Transport Protocol (TFTP), or remote copy protocol (RCP).

Example

The following example specifies the DHCP database transfer timeout value at 80 seconds:

ip dhcp database ftp://user:password@172.16.1.1/router-dhcp timeout 80

The following example specifies the DHCP database update delay value at 100 seconds:

ip dhcp database tftp://172.16.1.1/router-dhcp write-delay 100

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Cisco Systems 32369 manual Ip dhcp database, Timeout seconds

32369 specifications

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