DHCP in cisco router !

Hi guys,
I have a quastion , if I configure a cisco router with DHCP ,can I spacifice which interface most work in DHCP and Which doesn't?

Or>>
Which interface will work in DHCP if I have two fastethernet ports in my router when I use this commands

:

ip dhcp pool router1
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
dns-server 192.168.1.5 192.168.1.6
exit
ip dhcp excluded-address 192.168.1.1 192.168.1.5
ip dhcp excluded-address 192.168.1.6 192.168.1.255
^Z

Find more posts tagged with

Free for TechExams community: Cybersecurity salary guide

Compare cert salaries and plan your next career move

Button

Comments

kalebksp

Whichever interface is in the 192.168.1.0/24 subnet. Although since you've excluded all the addresses DHCP won't have any addresses to assign.

blackninja

remove: ip dhcp excluded-address 192.168.1.6 192.168.1.255

change: ip dhcp excluded-address 192.168.1.1 192.168.1.5 to ip dhcp excluded-address 192.168.1.1 192.168.1.6

All good to go

chmorin

The interface you specify with the default-router command becomes the default gateway for the network. So which ever interface you want to have that DHCP work with, make sure it is put in as your default-router.

Eg.

Fa 0/0 what i want my peers to query for a IP address.

int fa0/0
ip address 192.168.1.1 255.255.255.0
no shut

ip dhcp pool 1
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1

ip dhcp excluded-address 192.168.1.1

This would makes 192.168.1.1 not able to be handed out by the DHCP service, and gives the rest of the addresses in the 192.168.1.0/24 network available to be distributed to hosts attached to fa0/0.

Megadeth4168

chmorin wrote: »
The interface you specify with the default-router command becomes the default gateway for the network. So which ever interface you want to have that DHCP work with, make sure it is put in as your default-router.

Eg.

Fa 0/0 what i want my peers to query for a IP address.
int fa0/0
ip address 192.168.1.1 255.255.255.0
no shut

ip dhcp pool 1
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1

ip dhcp excluded-address 192.168.1.1
This would makes 192.168.1.1 not able to be handed out by the DHCP service, and gives the rest of the addresses in the 192.168.1.0/24 network available to be distributed to hosts attached to fa0/0.

Maybe I'm misreading this, if so, I apologize....

You can have your Default Gateway be the address of one interface and have your DHCP Network from a different interface.

He could have the following and it should work (assuming the interfaces exist and are configured as such).

ip dhcp pool test
network 192.168.1.0 255.255.255.0
default-router 10.10.0.1

kalebksp is correct in sayingWhichever interface is in the 192.168.1.0/24 subnet.