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Configuring DHCP Service with Quick Configuration

The DHCP Quick Configuration pages allow you to set up the DHCP service on the router. From the DHCP Service Quick Configuration page, click each of the tabs to configure global settings, DHCP pools for subnets, and static bindings for DHCP clients.

Figure 45 through Figure 47 show the DHCP Quick Configuration pages.

Figure 45: DHCP Global Settings Quick Configuration Page

DHCP Global Settings
Quick Configuration Page

Figure 46: DHCP Pools Quick Configuration Page

DHCP Pools Quick Configuration Page

Figure 47: DHCP Static Bindings Quick Configuration Page

DHCP Static Bindings Quick
Configuration Page

To configure the DHCP service with Quick Configuration:

  1. In the J-Web user interface, select Configuration>Quick Configuration>DHCP Service.
  2. Enter information into the DHCP Service Quick Configuration pages as described in Table 212.
  3. From the DHCP Service Quick Configuration page, click one of the following buttons:

Table 212: DHCP Service Quick Configuration Summary

Field

Function

Your Action

Configuring Global Settings  
Server Information

Server Identifier

Specifies the IP address of the DHCP server reported to a client.

Type the IP address of the Services Router. If you do not specify a server identifier, the primary address of the interface on which the DHCP exchange occurs is used.

Domain Name

Specifies the domain name that the clients must use to resolve hostnames.

Type the domain name.

Next Server

Specifies the IP address of the next DHCP server that the clients need to contact.

Type the IP address of the next DHCP server.

Propagate Interface

Specifies the name of the interface on the router through which the resolved DHCP queries are propagated to the DHCP pool.

Type the name of the interface.

Domain Search

Specifies the order—from top to bottom—in which clients must append domain names when resolving hostnames using DNS.

Do one of the following:

  • To add a domain name, type the name next to the Add button, and click Add.
  • To delete a domain name, select the name in the Domain Search box, and click Delete.

Name Servers

Defines a list of DNS servers the client can use, in order of preference—from top to bottom.

Do one of the following:

  • To add a DNS server, type an IP address next to the Add button, and click Add.
  • To remove a DNS server, select the IP address in the Name Servers box, and click Delete.

Gateway Routers

Defines a list of routers on the subnet that are configured as DHCP relay agents, in order of preference—from top to bottom.

Do one of the following:

  • To add a relay agent, type an IP address next to the Add button, and click Add.
  • To remove a relay agent, select the IP address in the Gateway Routers box, and click Delete.

WINS Servers

Specifies the name of the SNMP trap group being configured.

Do one of the following:

  • To add a NetBIOS name server, type an IP address next to the Add button, and click Add.
  • To remove a NetBIOS name server, select the IP address in the WINS Servers box, and click Delete.
Lease Time

Maximum Lease Time (seconds)

Specifies the maximum length of time a client can hold a lease. (Dynamic BOOTP lease lengths can exceed this maximum time.)

Type a number between 60 and 1,209,600 (seconds).

Default Lease Time (seconds)

Specifies the length of time a client can hold a lease, for clients that do not request a specific lease length.

Type a number between 60 and 2,419, 200 (seconds).

Boot Options

Boot File

Specifies the path and filename of the initial boot file to be used by the client.

Type the path and a file name.

Boot Server

Specifies the TFTP server that provides the initial boot file to the client.

Type the IP address or hostname of the TFTP server.

Option Table

Code/Type/Value

Defines a list of option codes, types, and values, in order of preference—from top to bottom. It is mandatory to define all the options.

Do the following:

  • Option Code—Type a number.
  • Option Type—Select a type from the list corresponding to the code.
  • Option Value—Type a valid option value based on the type.
Configuring DHCP Pools

DHCP Pools

Enables you to define address pools for DHCP clients.

To configure a new DHCP pool, click Add under DHCP Pools.

Address Pool Subnet (required)

Specifies the pool subnet on which DHCP is configured.

Type an IP address prefix.

Address Range Low (required)

Specifies the lowest address in the IP address pool range.

Type an IP address that is part of the subnet specified in Address Pool Subnet.

Address Range High (required)

Specifies the highest address in the IP address pool range.

Type an IP address that is part of the subnet specified in Address Pool Subnet. This address must be greater than the address specified in Address Range Low.

Exclude Addresses

Specifies addresses to exclude from the IP address pool.

Do one of the following:

  • To add an excluded address, type the address next to the Add button, and click Add.
  • To delete an excluded address, select the address in the Exclude Addresses box, and click Delete.
Configuring DHCP Static Bindings

DHCP Static Bindings

Enables you to assign DHCP clients to static IP addresses.

To configure a new static binding, click Add under DHCP Static Bindings.

DHCP MAC Address (required)

Specifies the MAC address of the client to be permanently assigned a static IP address.

Type the hexadecimal MAC address of the client.

Host Name

Specifies the client hostname associated with its IP address used by the DHCP messages exchanged between the server and the client. The name must be unique to the client within the subnet on which the client resides.

Type a client hostname.

Fixed IP Address (required)

Defines a list of IP addresses permanently assigned to the client. A static binding must have at least one fixed address assigned to it, but multiple addresses are also allowed.

Do one of the following:

  • To add an IP address, type the address next to the Add button, and click Add.
  • To remove an IP address, select the address in the Fixed IP Addresses box, and click Delete.

Client Identifier

Specifies the name of the client used by the DHCP server to index its database of address bindings. The client identifier can be an ASCII or hexadecimal string.

Do either of the following:

  • Select the client identifier type from the list. If you select Hexadecimal, you must type the client identifier using numbers 0 through 9, and letters A through F.
  • Type the client identifier.

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