From the course: Cisco CCNA (200-301) Cert Prep: 2 IP Connectivity and Services

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DHCP and DNS

DHCP and DNS

From the course: Cisco CCNA (200-301) Cert Prep: 2 IP Connectivity and Services

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DHCP and DNS

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- [Instructor] Imagine a network that has 10 PCs. If I were to manually configure IP addresses on each, that would take, maybe 20 minutes total, which really isn't that bad. Now imagine I'm in an office building that has thousands of PCs. Suddenly it seems a bit more daunting. That's one of the places that Dynamic Host Configuration Protocol, or DHCP, really shines. It's a means by which I can run a DHCP server, either on a router or a server, and as hosts join a network, they can request an IP address, and be given one to them. The server can then respond to this request and allocate them an available IP address from a pool. DHCP doesn't simply hand IP address to clients. There's much more information that it can supply. DHCP will supply a client with IP address, subnet mask, router to use as default gateway, a lease time, which is a timer showing how long the address is valid for, and last, DNS servers. DNS stands for Domain Name System, which in a nutshell is a mechanism to take a…

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