3Com Switch 7750 Series
Command Reference Guide – DHCP
Chapter 1 DHCP Server Configuration Commands
1-8
high-ip-address
: IP address that is not available for being assigned to DHCP clients.
This argument also marks the higher end of the range of the forbidden IP addresses.
Note that this argument cannot be less than the
low-ip-address
argument. If you do not
provide this argument, only the IP address specified by the
low-ip-address
argument is
forbidden.
Description
Use the
dhcp server forbidden-ip
command to forbid the specified IP addresses in a
DHCP address pool to be automatically assigned.
Use the
undo dhcp server forbidden-ip
command to cancel the forbiddance.
By default, all IP addresses in an address pool are allowed to be automatically
assigned.
Note that the specified address range cannot contain statically-bound addresses when
you use the
undo dhcp server forbidden-ip
command.
Related command:
dhcp server ip-pool
,
network
,
static-bind ip-address
and
dhcp
server static-bind
.
Example
# Forbid the IP addresses in the range 10.110.1.1 to 10.110.1.63 to be automatically
assigned.
<3Com> system-view
System View: return to User View with Ctrl+Z.
[3Com] dhcp server forbidden-ip 10.110.1.1 10.110.1.63
1.1.9 dhcp server ip-pool
Syntax
dhcp server ip-pool
pool-name
undo dhcp server ip-pool
pool-name
View
System view
Parameter
pool-name
: Name of a DHCP address pool, which uniquely identifies the address pool.
This argument is a string of 1 to 35 characters.
Description
Use the
dhcp server ip-pool
command to create a global DHCP address pool and
enter DHCP address pool view. If the address pool identified by the
pool-name
argument already exists, this command leads you to DHCP address pool view.