DHCP

Question 1

What command would you use to view IP Addresses handed out on a Cisco DHCP Router?

Answer 1

show ip dhcp binding

Question 2

What command will show you the name of the DHCP pool along with total addresses, total leased addresses, excluded addresses and how many subnets are in the DHCP pool?

Answer 2

show ip dhcp pool

Question 3

What are the commands to configure a Cisco DHCP server to hand out ip addresses?

Answer 3

ip dhcp excluded-address {starting-ip-address} {ending-ip-address}
ip dhcp pool {name-of-pool}
network {network-address} {subnet}
default-router {ip-address}
dns-server {ip-address}

Question 4

What is the first command you should input when configuring a Cisco DHCP Server?

Answer 4

ip dhcp excluded-address {starting-ip-address} {ending-ip-address}

Question 5

What are the commands to support an external DHCP Server on a cisco Layer 3 device?

Answer 5

int {int}
ip helper-address {ip-address}

Question 6

What command would you check to see a DHCP for a Router being used a DHCP client?

Answer 6

show dhcp lease

Question 7

What commands would you use on a Router to set it up as a DHCP client

Context: This would be for a small company that didn’t have any Public IP Addresses but they still needed an IP address on the outside so that their internal devices could get out to the internet

Answer 7

int {int}
-outside facing interface to the ISP
ip address dhcp
no shutdown