Cisco ASA 5505 - Manual (Page 351)

11-5
Cisco ASA 5500 Series Configuration Guide using the CLI
Chapter 11 Configuring DHCP
Configuring a DHCP Server
Options that Return a Hexadecimal Value
Note The ASA 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 the dhcpd option 46 ascii
hello command, and the ASA accepts the configuration, although option 46 is defined in RFC 2132 to
expect a single-digit, hexadecimal value. For more information about the option codes and their
associated types and expected values, see RFC 2132.
Table 11-2 shows the DHCP options that are not supported by the dhcpd option command.
DHCP options 3, 66, and 150 are used to configure Cisco IP Phones. For more information about
configuring these options, see the
“Using Cisco IP Phones with a DHCP Server” section on page 11-6 .
Command Purpose
dhcpd option code hex value
Example:
hostname(config)# dhcpd option 2 hex
22.0011.01.FF1111.00FF.0000.AAAA.1111.1111
.1111.11
Configures a DHCP option that returns a hexadecimal value.
Table 11-2 Unsupported DHCP Options
Option Code Description
0 DHCPOPT_PAD
1 HCPOPT_SUBNET_MASK
12 DHCPOPT_HOST_NAME
50 DHCPOPT_REQUESTED_ADDRESS
51 DHCPOPT_LEASE_TIME
52 DHCPOPT_OPTION_OVERLOAD
53 DHCPOPT_MESSAGE_TYPE
54 DHCPOPT_SERVER_IDENTIFIER
58 DHCPOPT_RENEWAL_TIME
59 DHCPOPT_REBINDING_TIME
61 DHCPOPT_CLIENT_IDENTIFIER
67 DHCPOPT_BOOT_FILE_NAME
82 DHCPOPT_RELAY_INFORMATION
255 DHCPOPT_END