Specifications

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set dhcp range [ 2... 8 ] start-address ip_address
Specifies the starting IP address of DHCP range n when subnet n option is on. See “Additional subnets”
on page 262.
set dhcp range [ 2... 8 ] end-address ip_address
Specifies the ending IP address of DHCP range n when subnet n option is on. See “Additional subnets”
on page 262.
set dhcp reserved ip-address x.x.x.x mac-address y-y-y-y-y-y
If you selected server, reserves the specified IP address from the DHCP pool to the specified MAC
address. These are list items; a total of 16 reserved addresses are supported. Secondary ranges will all
make use of the dhcp lease-time value.
DHCP Generic Options
Beginning with Firmware Version 7.7.2, you can specify DHCP Generic Options which allow you to configure
the content to be served for particular option numbers.
set dhcp gen-option name name
Specifies a DHCP generic option set named name of one to 15 characters. You can specify up to 20 gen-
options. Each can contain up to 100 bytes of data, up to a maximum of 912 bytes of options data total. An
option will be served only if the client requests it.
set dhcp gen-option option [ 1 – 255 ]
Specifies the DHCP option by number, 1 – 255. The following table shows the formats and sizes for known
options, and whether or not you can configure a gen-option of that type.
Option Data Format
Data Size
(bytes)
Can
Configure
0 Empty 0 No
1 IP mask 4 Yes
2 Unsigned 4 byte integer 4 Yes
3 - 11 IP address list Multiples of 4 Yes
12 String (up to 100 characters) N Yes
13 Unsigned 2 byte integer 2 Yes
14 - 15 String (up to 100 characters) N Yes
16 Unsigned 4 byte integer 4 Yes
17 String (up to 100 characters) N Yes
18 String (up to 100 characters) N Yes
19 - 20 Flag 1 Yes
21 IP address & mask list Multiples of 8 Yes
22 Unsigned 2 byte integer 2 Yes