DHCP Configuration

In this DHCP Configuration Packet Tracer Example, we will focus on how to configure DHCP server on a Cisco Router. For this Dynamic Hsot Configuration Protocol Configuration example, we will use a simple topology consist of a router, a switch and five host devices. We will configure DHCP Server on the router and that router will distribute ip addresses dynamically to the hosts.

In DHCP (Dynamic Host Configuration Protocol) terminology, there are different devices and roles. These devices and roles are:

DHCP Server
DHCP Client
DHCP Relay Agent

In this DHCP Configuration Packet Tracer lesson, we will do the configuraiton for the first two: Server and Client. DHCP Relay Agent configuration will be explained in another lesson.

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We have explained DHCP in the related lessons detally. DHCP Messages, its mechanism are all explained. Here, we have focused DHCP Packet Tracer Configuration and learn the required Cisco commands for this configuration. But here, let’s remember the messages of DHCP:

DHCP Discover
DHCP Offer
DHCP Request
DHCP Ack
DHCP Nak
DHCP Release
DHCP Decline
DHCP Inform

Let’s also remember the well-known port numbers used by DHCP. These ports are:

UDP Port 67: Used by Server
UDP Port 68: Used by Clients

Here, we have talked about packet tracer DHCP config basically. In the next lesson, we will configure dhcp relay agent on Cisco routers. In other words, here, we have configured DHCP server for only one network. But with dhcp relay agent, we will configure dhcp server for multiple networks, with DHCP relay agent we can distribute ip addresses to other networks.

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