DHCP Communication

[daniel_growth]

Below is my Topology:

I have not yet set up my VLANs but OSPF is working on all routers and they can communicate.

I have set the DNS and Gateway as warmingham switch 1 gi0/1

I need the bottom PC's to communicate with the top DNS Server and pick up an IP address.

Any IP address will do for now.

Thanks in advance :)

[luis_cordova]

Hi @daniel_growth ,

Could you compress your exercise (winzip) and attach it, specifying what you need?

Regards

[daniel_growth]

Hi I have attached the packet tracer file. Any passwords present will be 'cisco'

I would like the dhcp server to communicate with the pc on the networks and be able to fetch ip addresses.

[luis_cordova · Accepted solution]

Hi @daniel_growth ,

Let's start by making two changes:

First

Both ends of the links connecting the routers must belong to the same network

Router Warmingham HQ

Router(config)#int s0/0/0

Router(config-if)#ip add 10.0.2.34 255.255.255.252

Router(config-if)#int s0/1/0

Router(config-if)#ip add 10.0.2.38 255.255.255.252

Second

Both servers must have the gatway address configured (currently they have the IP 0.0.0.0 and they should have the IP 10.0.2.1).

All devices that want to communicate with devices outside their network need to have the IP gateway configured.

After those changes, you can try a ping to a server from the Audley Hospital router

Router#ping 10.0.2.2

Now you need to configure DHCP pools on the server for your LANs

In the Audley Hospital and Peover Hospital routers, in the gateway interfaces of your LANs, you have to indicate that they look for the DHCP server at a specific IP

You achieve this through the ip helper-addres <ip DHCP server> command.

Regards

[daniel_growth]

That's great! I didn't haven't to do the first thing you mentioned as it was already correct but the helper address fixed the issue for me.

My next task is to create VLANS on all the switches. For this I am going to use VTP and have the top switch as the server.

Thanks for your help :)