What is DHCP? How does it actually work? This video shows you practical examples of DHCP in real time and includes Wireshark captures showing you actual DHCP messages.

Menu:

Introduction and basic terms: 00:014

iPhone DHCP Client explanation: 03:46

Lab and DHCP server configuration: 07:54

Cool Wireshark Flow Graph: 15:15

Wireshark deep dive: 17:23

Cisco router output: 22:25

Linux client and Wireshark coolness: 23:07

This video also discusses the difference between static and dynamic IP addresses.

DHCP messages:

DHCPDiscover - Sent by client. Discover / find DHCP servers on the network.

DHCPOffer - Sent by server. Offering an IP address and other parameters for the client to use.

DHCPRequest - Sent by client. The client requests the address that was offered by the server.

DHCPACK - Sent by Server to acknowledge client. Contains information like IP address, lease time, default-gateway and other information.

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