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708 CHAPTER 51: DHCP SERVER CONFIGURATION COMMANDS
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: Start IP address of the IP address range to be excluded from
dynamic allocation.
high-ip-address: End IP address of the IP address range to be excluded from
dynamic allocation. The end IP address must have a higher sequence than the start
one.
Description Use the dhcp server forbidden-ip command to exclude IP addresses from
dynamic allocation.
Use the
undo dhcp server forbidden-ip command to remove the
configuration.
By default, all IP addresses in a DHCP address pool are assignable except IP
addresses of the DHCP server interfaces.
Note that:
■ When you use the dhcp server forbidden-ip command to exclude an IP
address that is bound to a user from dynamic assignment, the address can be
still assigned to the user.
■ When you use the undo dhcp server forbidden-ip command to remove the
configuration, the specified address/address range must be consistent with the
one specified in the dhcp server forbidden-ip command. If you have
configured to exclude an address range from dynamic assignment, you need to
specify an address range in the undo dhcp server forbidden-ip command
instead of specifying one IP address.
Related command: dhcp server ip-pool, network, and static-bind ip-address.
Example # Exclude the IP address range 10.110.1.1 to 10.110.1.63 from dynamic
allocation.
<Sysname> system-view
[Sysname] dhcp server forbidden-ip 10.110.1.1 10.110.1.63
dhcp server ip-pool
Syntax dhcp server ip-pool pool-name
undo dhcp server ip-pool pool-name