43
NOTE:
Only the extended address pools support this command.
If you specify an IP address range for an extended address pool without an IP address mask, the extended
address pool is not valid, and therefore the system cannot assign IP addresses from the extended address pool.
Related commands:
dhcp server ip-pool
,
network ip range
, and
display dhcp server tree
.
Examples
# Specify 255.255.255.0 as the IP address mask for dynamic allocation in extended address pool 0.
<Sysname> system-view
[Sysname] dhcp server ip-pool 0 extended
[Sysname-dhcp-pool-0] network mask 255.255.255.0
option
Syntax
option
code
{
ascii
ascii-string
|
hex
hex-string
&<1-16> |
ip-address
ip-address
&<1-8> }
undo option
code
View
DHCP address pool view
Default level
2: System level
Parameters
code
: Specifies the self-defined option number, in the range 2 to 254, excluding 12, 50 to 55, 57 to 61,
and 82.
ascii
ascii-string
: Specifies an ASCII string with 1 to 255 characters.
hex
hex-string
&<1-16>: Specifies hex digit strings. &<1-16> indicates that you can specify up to 16 hex
digit strings, separated by spaces. Each string contains 2, 4, 6 or 8 hex digits.
ip-address
ip-address
&<1-8>: Specifies IP addresses. &<1-8> indicates that you can specify up to eight IP
addresses, separated by spaces.
Description
Use the
option
command to configure a self-defined DHCP option in a DHCP address pool.
Use the
undo option
command to remove a self-defined DHCP option from a DHCP address pool.
The
option
command is not configured by default.
If you use the
option
command repeatedly, the latest configuration will overwrite the previous one.
Related commands:
dhcp server ip-pool
and
display dhcp server tree
.
Examples
# Configure the hex digits 0x11 and 0x22 for the self-defined DHCP Option 100 in DHCP address pool
0.
<Sysname> system-view
[Sysname] dhcp server ip-pool 0
[Sysname-dhcp-pool-0] option 100 hex 11 22
