Dhcp Server Forbidden-Ip - 3Com 8807 Command Reference Manual

DHCP Server Configuration Commands 829
interface vlan-interface vlan-id [ to vlan-interface vlan-id ]: Specifies one VLAN
interface, or a range of VLAN interfaces.
all: Specifies all VLAN interfaces.
Description
Use the dhcp server expired command to set the IP address lease time for the
DHCP address pool of current VLAN interface, or for the DHCP address pool(s) of
the specified VLAN interface(s).
Use the undo dhcp server expired command to revert to the default IP address
lease time for the DHCP address pool of current VLAN interface, or for the DHCP
address pool(s) of the specified VLAN interface(s).
The default lease time is one day.
Related command: expired.
Example
# Set the IP address lease time of the DHCP address pool of VLAN interface 1 to
unlimited.
<SW8800> system-view
System View: return to User View with Ctrl+Z.
[SW8800] interface vlan-interface 1
[3Com-Vlan-interface1] dhcp server expired unlimited

dhcp server forbidden-ip

Syntax
dhcp server forbidden-ip low-ip-address [ high-ip-address ]
undo dhcp server forbidden-ip low-ip-address [ high-ip-address ]
View
System view
Parameter
low-ip-address: Minimum IP address in the forbidden IP address range.
high-ip-address: The highest IP address in the forbidden IP address range. Note
that the value of this argument must be larger than (or equal to) that of the
low-ip-address argument. If you do not provide this argument, then the forbidden
IP address range contains only the IP address specified by the low-ip-address
argument.
Description
Use the dhcp server forbidden-ip command to forbid a range of IP addresses to
be automatically assigned to DHCP clients.
Use the undo dhcp server forbidden-ip command to cancel the forbiddance.
All IP addresses in a DHCP address pool can be automatically assigned by default.