Cisco Systems 32369 Configuring a Dhcp Server Boot File, Configuring the Number of Ping Packets

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DHCP Configuration Task List

To configure manual bindings, use the following commands beginning in global configuration mode:

Step

Command

Purpose

1

Router(config)# ip dhcp pool name

Creates a name for the a DHCP server address

 

 

pool and places you in DHCP pool configuration

 

 

mode—identified by the (config-dhcp)# prompt.

 

 

 

2

Router(config-dhcp)# host address [mask

Specifies the IP address and subnet mask of the

 

/prefix-length ]

client.

 

 

The prefix length specifies the number of bits that

 

 

comprise the address prefix. The prefix is an

 

 

alternative way of specifying the network mask of

 

 

the client. The prefix length must be preceded by

 

 

a forward slash (/).

 

 

 

3

Router(config-dhcp)# hardware-address

Specifies a hardware address for the client.

 

hardware-address type

 

 

or

 

 

Router(config-dhcp)# client-identifier

Specifies the distinct identification of the client in

 

unique-identifier

dotted-hexadecimal notation, for example,

 

 

01b7.0813.8811.66, where 01 represents the

 

 

Ethernet media type.

 

 

 

4Router(config-dhcp)# client-namename (Optional) Specifies the name of the client using any standard ASCII character. The client name should not include the domain name. For example, the name mars should not be specified as mars.cisco.com.

Configuring a DHCP Server Boot File

The boot file is used to store the boot image for the client. The boot image is generally the operating system the client uses to load. To specify a boot file for the DHCP client, use the following command in DHCP pool configuration mode:

Command

Purpose

Router(config-dhcp)# bootfile filename Specifies the name of the file that is used as a boot image.

Configuring the Number of Ping Packets

By default, the DHCP server pings a pool address twice before assigning the address to a requesting client. If the ping is unanswered, the DHCP server assumes (with a high probability) that the address is not in use and assigns the address to the requesting client. To change the number of ping packets the DHCP server should send to the pool address before assigning the address, use the following command in global configuration mode:

Command

Purpose

Router(config)# ip dhcp ping packets Specifies the number of ping packets the DHCP server sends to

numbera pool address before assigning the address to a requesting cli- ent. The default is two packets.

8Release 12.0(1)T

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Contents Feature Overview Cisco IOS Dhcp ServerBenefits Supported PlatformsSupported Standards, MIBs, and RFCs RFCsPrerequisites Dhcp Configuration Task ListExcluding IP Addresses Configuring a Dhcp Address PoolConfiguring the Dhcp Address Pool Subnet and Mask Configuring the NetBIOS Node Type for the Client Configuring Manual BindingsConfiguring a Dhcp Server Boot File Configuring the Number of Ping PacketsMonitoring and Maintaining the Dhcp Server Configuring the Timeout Value for Ping PacketsEnabling the Cisco IOS Dhcp Server Feature Dhcp Address Pool Configuration Example Configuration ExamplesDhcp Database Agent Configuration Example Manual Bindings Configuration Example Manual Bindings Configuration ExampleCommand Reference Show atm vc begin PeakRate Bootfile Clear ip dhcp binding Clear ip dhcp conflict Clear ip dhcp server statistics Client-identifier Unique-identifierClient-name Default-router Dns-server Domain-name Hardware-address TypeHost Ip dhcp conflict logging ExampleTimeout seconds Ip dhcp databaseIp dhcp database Ip dhcp excluded-address Ip dhcp ping packets Ip dhcp ping timeout Ip dhcp pool Ip dhcp relay information check Ip dhcp relay information option Ip dhcp relay information policy DropLease Netbios-name-server Netbios-node-type Network Dhcp Next-server Option Ascii stringOption Service dhcp Show ip dhcp binding Router show ip dhcp bindingRelated Commands Show ip dhcp conflict Router show ip dhcp conflictShow ip dhcp database UrlShow ip dhcp database Show ip dhcp server statistics Router show ip dhcp server statisticsClear ip dhcp server statistics Debug Commands Debug ip dhcp server Router# debug ip dhcp server linkageGlossary

32369 specifications

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