XP1,240
Lesson · 03

DHCP

DHCP provides automatic IP addresses and network configuration to devices.

Duration
1min
Level
L3
Type
Lesson
Progress
3/ 5

01Why DHCP?

Without DHCP, you'd need to manually assign an IP to each device:

  • 😰 Time waste
  • 😰 Error risk
  • 😰 IP conflicts

With DHCP:

  • ✅ Automatic IP
  • ✅ Quick setup
  • ✅ Central management

02What DHCP Provides

InformationExample
IP Address192.168.1.100
Subnet Mask255.255.255.0
Default Gateway192.168.1.1
DNS Server8.8.8.8
Lease Time24 hours

03DORA Process

DHCP works in 4 steps (DORA):

1. Discover

code
Client → "Looking for IP!" → Broadcast

2. Offer

code
DHCP Server → "192.168.1.100 available" → Client

3. Request

code
Client → "I want 192.168.1.100" → Server

4. Acknowledge

code
Server → "OK, it's yours for 24 hours" → Client

04Summary

  • DHCP = Automatic IP distribution
  • DORA = Discover, Offer, Request, Acknowledge
  • Lease = Temporary IP usage
  • Router or server provides DHCP service