Configuring DHCP with Quick Configuration

Server Identifier

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

Type the IP address of the device. 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 device 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 devices 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.

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 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.

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.

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.

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.

DHCP Client

Enables you to configure the device to operate as a DHCP client.

From the DHCP Quick Configuration page, click Add under DHCP Client.

Interface (required)

Specifies the interface on which to configure the DHCP client.

Type the name of the interface.

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.

Lease Time (seconds)

Specifies the time to negotiate and exchange DHCP messages.

Type a number between 60 and 2,147,483,647 (seconds).

Retransmission Attempt

Specifies the number of attempts the device is allowed to retransmit a DHCP packet fallback.

Type a number between 0 and 6.

The default is 4.

Retransmission Interval (seconds)

Specifies the time interval allowed between successive retransmission attempts.

Type a number between 4 and 64.

The default is 4.

DHCP Server Address

Specifies the preferred DHCP server the DHCP clients contact with DHCP queries.

Type the IPv4 address of the DHCP server.

Vendor Class ID

Specifies the vendor class identity number for the DHCP client.

Type the vendor class ID.

Update Server

Specifies whether the propagation of TCP/IP settings is enabled on the specified interface (if it is acting as a DHCP client) to the DHCP server configured on the device.

To enable the propagation of TCP/IP settings to the DHCP server configured on the device, select Update Server check box.

DHCP Relay Agent

Specifies if the DHCP relay agent is enabled to relay BOOTP or DHCP messages to a BOOTP server.

To enable the relay agent, select DHCP Relay Agent check box.

VPN Encryption

Specifies if VPN encryption is enabled to allow client requests to pass through a VPN tunnel.

To enable VPN encryption, select VPN Encryption check box.

Client Response TTL

Specifies the IP time-to-live value, in seconds, to set in responses to clients.

Type a number between 1 and 225.

Maximum Hop Count

Specifies the maximum number of hops allowed per packet.

Type a number between 4 and 16.

Minimum Wait Time

Specifies the minimum number of seconds before requests are forwarded to the BOOTP server.

Type a number between 0 and 30,000.

Description of Server

Specifies the description for the BOOTP server.

Type the description in the Description of the Server text box.

Servers/Routing Instance

Defines a list of IP addresses of the servers and routing instances, in order of preference—from top to bottom.

1. Do the following:
   • Type the IP address of the server.
   • Select a routing instance. A routing instance is optional.
2. Do one of the following:
   • To add a server, type an IP address next to the Add button, and click Add.
   • To remove a server, select the IP address in the Servers/Routing Instance list, and click Delete.

Interfaces

Defines a list of the incoming BOOTP or DHCP request forwarding interfaces, 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 Interfaces list, and click Delete.