Cisco ASA Series Cli Configuration Manual page 523

Chapter 1 Configuring DHCP
To send information to use for any option number, enter the following command:
Command
dhcpd option number value
Example:
hostname(config)# dhcpd option 2
To send information to use for option 66, enter the following command:
Command
dhcpd option 66 ascii server_name
Example:
hostname(config)# dhcpd option 66 ascii
exampleserver
To send information to use for option 150, enter the following command:
Command
dhcpd option 150 ip server_ip1
[server_ip2]
Example:
hostname(config)# dhcpd option 150 ip
10.10.1.1
To send information to use for option 3, enter the following command:
Command
dhcpd option 3 ip router_ip1
Example:
hostname(config)# dhcpd option 3 ip
10.10.1.1
Purpose
Provides information for DHCP requests that include an option number as
specified in RFC 2132.
Purpose
Provides the IP address or name of a TFTP server for option 66.
Purpose
Provides the IP address or names of one or two TFTP servers for option
150. The server_ip1 is the IP address or name of the primary TFTP server
while server_ip2 is the IP address or name of the secondary TFTP server.
A maximum of two TFTP servers can be identified using option 150.
Purpose
Sets the default route.
Cisco ASA Series CLI Configuration Guide
Configuring a DHCP Server
1-7