Answer / jitendera sinha

this command is very easy to understand with example

let
there is a router and u have enabled dhcp on that router
what happen any user connected to that router when enable dhcp ip address to his computer it may get some ip address that we don't want to give because it is manulay configured in network
so we make that range of ip address excluded by that comand

Answer / jitendera kumar sinha

onfigure an IP address on the router's Ethernet por

Router(config-if)#ip address 1.1.1.1 255.0.0.0

Router(config-if)# no shutdown
Create a DHCP IP address pool for the IP addresses you want to use.
Router(config)# ip dhcp pool mypool
Specify the network and subnet for the addresses you want to use from the pool.
Router(dhcp-config)# network 1.1.1.0 /8
Specify the DNS domain name for the clients.
Router(dhcp-config)#domain-name mydomain.com
Specify the primary and secondary DNS servers.
Router(dhcp-config)#dns-server 1.1.1.10 1.1.1.11
Specify the default router (i.e., default gateway).
Router(dhcp-config)#default-router 1.1.1.1
Specify the lease duration for the addresses you're using from the pool.
Router(dhcp-config)#lease 7
Exit Pool Configuration Mode.
Router(dhcp-config)#exit
This takes you back to the global configuration prompt. Next, exclude any addresses in the pool range that you don't want to hand out.

For example, let's say that you've decided that all IP addresses up to .100 will be for static IP devices such as servers and printers. All IP addresses above .100 will be available in the pool for DHCP clients.

Here's an example of how to exclude IP addresses .100 and below:

Router(config)#ip dhcp excluded-address 1.1.1.0 1.1.1.100

smagh mai ayayay ki nhai nikhl

Answer / sandhu

These are the ip range which is not automaticaly provided
to clients. clients will accept the ip start from
192.168.0.20 .we can use this range for reservation.

Answer / nikhil maggu

and also Jeetu how to enable dhcp on router?? a brief idea
if possible

Answer / jitendera kumar sinha

Router(config-if)#ip address 1.1.1.1 255.0.0.0

Router(config-if)# no shutdown
Create a DHCP IP address pool for the IP addresses you want to use.
Router(config)# ip dhcp pool mypool
Specify the network and subnet for the addresses you want to use from the pool.
Router(dhcp-config)# network 1.1.1.0 /8
Specify the DNS domain name for the clients.
Router(dhcp-config)#domain-name mydomain.com
Specify the primary and secondary DNS servers.
Router(dhcp-config)#dns-server 1.1.1.10 1.1.1.11
Specify the default router (i.e., default gateway).
Router(dhcp-config)#default-router 1.1.1.1
Specify the lease duration for the addresses you're using from the pool.
Router(dhcp-config)#lease 7
Exit Pool Configuration Mode.
Router(dhcp-config)#exit
This takes you back to the global configuration prompt. Next, exclude any addresses in the pool range that you don't want to hand out.

For example, let's say that you've decided that all IP addresses up to .100 will be for static IP devices such as servers and printers. All IP addresses above .100 will be available in the pool for DHCP clients.

Here's an example of how to exclude IP addresses .100 and below:

Router(config)#ip dhcp excluded-address 1.1.1.0 1.1.1.100

smagh mai ayayay ki nhai nikhl

Answer / jm

this command is used to remove some addresses that a dhcp
server can't allocate to clients dynamically

Answer / rav

hi

while we configure ip dhcp service on router this command exclude those ip which never should be changed or not gonna be assign to another host or device
dhcp filter these ip while assigning ip address to new device.

Answer / nikhil maggu

Bhai had an idea , will surely try this config this weekend
in simulator as hardly getting time in between
Thanks ..........

Answer / abhinam

If anyone enter this command on router
this command will provide the ip address to the client those
are connect to this router, except the ip address range
192.168.0.1 192.168.0.19.

Means, This range of ip address will not be used by Clients.

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