Cisco DHCP Lab, Stuff that a middle age man is still learning

Moving and studying do no go hand in hand, but I am in my new place and the network is about all setup. It will be rough trying to get all the studying that I need in and the test taken before the end of the month, but I am going to keep focusing and time will tell.

DHCP Configureation Lab

Configure the interface to accept DHCP address
- (config-if)#ip address dhcp
Verify interface received IP address
- (config-if)#do show ip int brief
What is the IP address of the DHCP server
- #show dhcp lease
Enable router to be a DHCP server
- (config)#ip dhcp pool [Name of pool]
- (dhcp-config)#network 10.10.10.0 255.255.255.0
- (dhcp-config)#dns-server 10.10.10.1
- (dhcp-config)#exit
- (config)#ip dhcp excluded 10.10.10.1 10.10.10.10
  - Note: the lab demestrates that all the exceptions can be put in before setting up the pool. So I should have excluded the range to ensure that they could not be handed out after the pool is created. Additionally the lab did not not specifically call for a gateway but it was put in during the lab.
- (config)#ip dhcp pool [name of pool]
- (dhcp-config)#default-routere 10.10.10.1
Show that clients received ip addresses
- #show ip dhcp binding
- BONUS: Since I did not put in the exclusion be for create the pool my clients go IP addresses in the “excluded range” and I had a conflict since the routers IP address is 10.10.10.1 which is also in the excluded range.
  - Clear DHCP conflicts
    - # clear ip dhcp conflict *
  - First client’s IP address was change on the client itself using the cmd promt
  - Second client’s IP address was release through the following command but this only releases it on the DHCP server but the client will have to have it renewed on the device itself.
    - #clear ip dhcp binding 10.10.10.3
      - This command was missing in Packet Tracer but found it on Cisco’s chat board.
Remove DHCP from router
- (config)#no ip dhcp pool [pool name]
- (config)#no ip dhcp 10.10.10.1 10.10.10.10
Configure DHCP relay/helper address on client network
- (config)#int f0/0
- (config-if)#ip helper-addresss 10.10.20.10