DHCP Server in Packet Tracer Lab - Zacham17/my-tech-journal GitHub Wiki

Pre Lab

  • This Lab uses the packet tracer file from Week 2
  • I added a "Generic Server" to the file, which will later become a DHCP server.
  • I gave the DHCP server the address, "10.26.10.2" on the Management VLAN and connected it to the FastEthernet 0/3 port on the East-core switch.
  • I assigned the ports on East Core switch the address, 10.26.10.1
  • NOTE: The MGMT VLAN 1 is disabled by default. On the East-Core Switch use the commands, interface vlan 1 and no shutdown to enable the VLAN.
  • At this point, I am able to ping from the server to other devices on the network.

Configure DHCP

  • On the DHCP server, in the services tab, I enabled DHCP.
  • In the same tab, I configured the DHCP address pools according to the needs of each VLAN. The final address pools are shown below: image

Testing DHCP

  • I added a workstation to the East-Core-Switch on VLAN1 and configured it to use DHCP.
  • It was assigned an address from the set address pool, showing me that DHCP is working

Configure DHCP Relay

  • In order for DHCP requests and broadcasts to cross the router, I need to set up DHCP relay on the East-Core-Switch.
  • The "ip helper-address" command is used to configure DHCP relay. I used the following commands on the East-Core-Switch to set up DHCP relay for each VLAN:
east-csw-01(config)#interface vlan 100
east-csw-01(config-if)#ip helper-address 10.26.10.2
east-csw-01(config-if)#interface vlan 110
east-csw-01(config-if)#ip helper-address 10.26.10.2
east-csw-01(config-if)#interface vlan 130
east-csw-01(config-if)#ip helper-address 10.26.10.2
east-csw-01(config-if)#interface vlan 140
east-csw-01(config-if)#ip helper-address 10.26.10.2

Configure Clients to Use DHCP

  • On each client workstation, in the settings, I set the IP Configuration to DHCP. All the systems retrieved addresses and were able to ping each other.
  • The packet tracer file looked like the following: image