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.