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D.H. DHC the Dynamic Host Configuration Protocol is used to dynamically assign IP addresses to network

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endpoints.

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This makes connecting to the network a lot easier for endpoints since all network devices require IP

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addresses to communicate on a network.

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IP addresses are mandatory IP addresses can be either statically or dynamically assigned.

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I imagine the administration nightmare of trying to manually assign IP addresses to hundreds or even

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thousands of devices.

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Now we'll take a look at a real world example of a network computer obtaining an IP address via the

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D.H. C.P protocol.

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So here in my computer I'm going to open up my network connections or go to change adapter settings

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find my wireless connection.

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So here's the wireless NIC that my computer is currently using.

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And if I go to properties and click on Internet Protocol version 4 and properties again I have the ability

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to either manually configure my IP address or check obtain an IP address automatically which would make

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my computer use the DHP protocol.

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So I'm already configured for DHP to refresh my DHP messages.

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I'm going to pull my DOS prompt here.

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And before I clear my IP address I'll just run IP config and I want to show you that

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actually IP config slash all

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and if I look at my network interface configuration I see that I have DHP enabled.

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And here is the DHP server that sent me the IP address that I dynamically obtained.

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As you can see in the background I have wireshark running and it's filtering only to capture DHP messages.

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So let's release my DHP address by using the command IP config slash release.

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So I just sent a release message to my DHC piece are saying hey I don't want this dynamically configured

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IP address anymore.

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And then I'll see Renu which will trigger a request for a new DHP IP address

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and I should have re obtained an IP address dynamically which I did here in the packet capture you can

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see that when I set my release command my IP address told my DHP server that I do not want this address

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anymore.

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Basically releasing this IP address and it can be used for other clients and then my renew.

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I went through the DHP client discovery process all over again.

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So you can see I sent a broadcast address with my DHP discover message that reached my gateway which

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forwarded it to my DHP server.

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Now I see the offer response followed by a client to server request message and then finally I received

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an acknowledgement with the IP address that was going to be assigned to my computer.