From the course: Cisco Certified Support Technician (CCST) Networking (100-150) Cert Prep

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IPv4 autoconfiguration

IPv4 autoconfiguration

From the course: Cisco Certified Support Technician (CCST) Networking (100-150) Cert Prep

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IPv4 autoconfiguration

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(euphoric music) - [Narrator] Let's say we've got a couple of PCs, PC A and PC B like we see on screen, and they need IP address information. One option is for us to go to PC A and configure it, then go over to PC B and configure it, but that's not scalable. What if we had hundreds or thousands of PCs to configure? A much more scalable option is to do auto configuration of IPv4 address information, and we can do that using the Dynamic Host Configuration Protocol or DHCP. First, consider PC A, it's going to send a discover broadcast out on its local subnet and the DHCP server that we see on screen on the right, it lives on PC A subnet so it's going to get that broadcast message. Remember, a broadcast does not cross a router boundary. So when that broadcast hit R1, it was discarded, but that discover broadcast made it to the DHCP server. And by the way, as a memory aid, I want you to remember the acronym of DORA, D-O-R-A. When my daughters were little, they used to watch a show on…

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