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

Default level

2: System level

Parameters

low-ip-address: Specifies the start IP address of the IP address range to be excluded from dynamic allocation.

high-ip-address: Specifies the 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 dhcp server forbidden-ip to exclude IP addresses from dynamic allocation.

Use undo dhcp server forbidden-ip to remove the configuration.

By default, all IP addresses in a DHCP address pool are assignable except IP addresses of the DHCP server interfaces.

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 with the dhcp server forbidden-ip command. If you have configured to exclude an address range from dynamic assignment, you need to specify the same address range in the undo dhcp server forbidden-ip command instead of specifying one IP address.

Using the dhcp server forbidden-ip command repeatedly can exclude multiple IP address ranges from allocation.

Related commands: display dhcp server forbidden-ip, dhcp server ip-pool, network, and static-bind ip-address.

Examples

# 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