Configuring Dhcp Options - Cisco 7604 Configuration Manual

Chapter 8 Configuring IP Routing and DHCP Services
For example, to assign the range 10.0.1.101 to 10.0.1.110 to hosts connected to the inside interface, enter
the following commands:
hostname(config)# dhcpd address 10.0.1.101-10.0.1.110 inside
hostname(config)# dhcpd dns 209.165.201.2 209.165.202.129
hostname(config)# dhcpd wins 209.165.201.5
hostname(config)# dhcpd lease 3000
hostname(config)# dhcpd domain example.com
hostname(config)# dhcpd enable inside

Configuring DHCP Options

You can configure the FWSM to send information for the DHCP options listed in RFC 2132. The DHCP
options fall into one of three categories:
•
•
•
The FWSM supports all three categories of DHCP options. To configure a DHCP option, do one of the
following:
•
•
•
Note The FWSM does not verify that the option type and value that you provide match the expected type and
value for the option code as defined in RFC 2132. For example, you can enter
hello
a single-digit, hexadecimal value. For more information about the option codes and their associated
types and expected values, refer to RFC 2132.
Table 8-1
Table 8-1
Option Code
0
1
12
50
51
Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide using ASDM
OL-20748-01
Options that return an IP address.
Options that return a text string.
Options that return a hexadecimal value.
To configure a DHCP option that returns one or two IP addresses, enter the following command:
hostname(config)# dhcpd option code ip addr_1 [addr_2]
To configure a DHCP option that returns a text string, enter the following command:
hostname(config)# dhcpd option code ascii text
To configure a DHCP option that returns a hexadecimal value, enter the following command:
hostname(config)# dhcpd option code hex value
, and the FWSM accepts the configuration although option 46 is defined in RFC 2132 as expecting
shows the DHCP options that are not supported by the dhcpd option command:
Unsupported DHCP Options
Description
DHCPOPT_PAD
HCPOPT_SUBNET_MASK
DHCPOPT_HOST_NAME
DHCPOPT_REQUESTED_ADDRESS
DHCPOPT_LEASE_TIME
Configuring DHCP
dhcpd option 46 ascii
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