Which DHCP Server Setting?

About this interactive

From the lesson: - **Scope (pool):** the range of addresses the server can hand out. - **Lease time:** how long a client may keep an address. The client asks to renew at the halfway point. - **Reservation:** a specific address kept for one device, matched by its MAC address, while the device stays a DHCP client. - **Options:** the other settings handed out with the address, such as the DNS server, default gateway and domain name. The four messages are Discover, Offer, Request and Acknowledge. When several servers offer, a client usually takes the first offer it gets; the video's "longest lease" is not how clients choose.

What you'll learn

Choose the DHCP server setting that meets a need: the scope (pool) of addresses, the lease time, a reservation for one device, or an option such as the DNS server, default gateway or domain name
Explain how the lease time controls when clients renew, at the halfway point, and when unused addresses return to the pool

Aligned to

Cisco CCNA

4.3 Explain the role of DHCP and DNS within the network

Key terms

Dynamic Host Configuration Protocol: A network protocol that automatically assigns IP addresses and other configuration parameters to devices on a network.
DHCP Scope: The defined pool of IP addresses that a DHCP server is configured to assign to clients on a specific subnet, along with associated options such as the subnet mask, default gateway, and DNS servers. Each subnet served by a DHCP server has its own scope.
DHCP Lease Time: The duration for which a DHCP server assigns an IP address to a client before the address must be renewed or released.
DHCP Reservation: A manual DHCP allocation that permanently assigns a specific IP address to a device based on its MAC address, ensuring it receives the same address each time it connects.
DHCP Options: Numbered configuration parameters delivered by a DHCP server to clients beyond the basic IP settings, such as DNS servers, default gateway, NTP servers, and vendor-specific instructions.
DHCP Pool: A named configuration block on a Cisco IOS DHCP server that defines the range of IP addresses and parameters to be assigned to clients on a specific network.
Default Gateway: The router that a device uses to send traffic to destinations outside its local network.

Topics

Dhcp Dhcp Scope Dhcp Lease Dhcp Reservation Dhcp Options Interactive Categorize

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