dhcp excluded-address

[paolo.brocchi]

Hi all,

i would ask you how can i modify my ip dhcp excluded-address .

My situation is like below:

ip dhcp excluded-address 10.22.93.1 10.22.93.20
ip dhcp excluded-address 10.22.93.199 10.22.93.254
!
 WIFI
   network 10.22.93.0 255.255.255.0
   default-router 10.22.93.1
   lease infinite

I would modify ip dhcp excluded-address 10.22.93.199 10.22.93.254 in ip dhcp excluded-address 10.22.93.230 10.22.93.254

it's enought do:

no ip dhcp excluded-address 10.22.93.199 10.22.93.254

ip dhcp excluded-address 10.22.93.230 10.22.93.254

Please answer me.

Regards

Paolo

[edikmkoyan]

clear ip dhcp bindings

[paolo.brocchi]

So i need to do:

conf t

no ip dhcp excluded-address 10.22.93.199 10.22.93.254

ip dhcp excluded-address 10.22.93.230 10.22.93.254

clear ip dhcp bindings

exit

wr mem

Right?

[paolo.brocchi]

Please answer me

Regards

Paolo

[MANI .P]

Use

This command prevents IP addresses from being assigned by the router's DHCP server. This is used to prevent IP conflicts with statically assigned servers and routers.

Syntax

Router(config)#ip dhcp excluded-address <low IP> <high IP>

Example

First we configure the DHCP server with ip dhcp pool and exclude the ip addresses.

R2(config)#ip dhcp pool R1_Pool
R2(dhcp-config)#network 10.22.93.0 /24
R2(dhcp-config)#dns-server 4.2.2.2
R2(dhcp-config)#default-router 10.22.93.1
R2(dhcp-config)#exit
R2(config)#ip dhcp excluded-address 10.22.93.230 10.22.93.254

Currently R1's Fa0/0 does not have an IP address
R1(config-if)#do show ip interface brief | ex unass

After we configure ip address dhcp on R1's Fa0/0, it receives an IP address of 10.22.93.1
R1(config)#int fa0/0
R1(config-if)#ip address dhcp
R1(config-if)#
*Mar 1 00:40:36.339: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor 10.22.93.2 (FastEthernet0/0) is down: address changed

R1(config-if)#
*Mar 1 00:56:44.903: %DHCP-6-ADDRESS_ASSIGN: Interface FastEthernet0/0 assigned DHCP address 10.1.1.100, mask 255.255.255.0, hostname R1
R1(config-if)#
*Mar 1 00:41:21.567: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor 10.22.93.2 (FastEthernet0/0) is up: new adjacency
R1(config-if)#