ip dhcp excluded-address
ip dhcp excluded-address low-address [high-address]
no ip dhcp excluded-address low-address [high-address]
low-address The excluded IP address, or first IP address in an excluded address range. high-address (Optional) The last IP address in the excluded address range.
To specify IP addresses that a Cisco IOS Dynamic Host Configuration Protocol (DHCP) Server should not assign to DHCP clients, use the ip dhcp excluded-address global configuration command. To remove the excluded IP addresses, use the no form of this command.
By default, all IP pool addresses are assignable.
The DHCP Server assumes that all pool addresses may be assigned to clients. Use this command to exclude a single IP address or a range of IP addresses.
The following example configures an excluded IP address range from 172.16.1.100 through 172.16.1.199:Router(config)#ip dhcp excluded-address 172.16.1.100 172.16.1.199
ip dhcp pool
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