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CCNA Network Architecture Lab – Step-by-Step

Follow the steps in order. Each step builds on the same network until it becomes a real working CCNA lab.

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STEP 01

Network Architecture Overview

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STEP 02

Add Devices in Packet Tracer

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STEP 03

Add Serial Ports (Head Office ↔ Branch)

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STEP 04

Connect R1 to the Distribution Switch (SW1)

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STEP 05

Connect SW1 to SW2 (Access switch A)

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STEP 06

Connect SW1 to SW3 (Access switch B)

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STEP 07

Revision for step 1 to 6

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STEP 08

Connect END DEVICES (PCs, Server, Wi-Fi router)

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STEP 09

Name the devices (slow + precise)

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STEP 10

Complete the Branch (Physical)

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STEP 11

Interface Awareness (KNOW WHAT EACH PORT IS FOR)

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STEP 12

IP Addressing Plan (ON PAPER ONLY)

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STEP 13

Configure ONE LAN interface on HO-R1

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STEP 14

Give ONE PC an IP & Test Ping

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STEP 15

Configure the WAN link (HO-R1 ↔ BR-R2)

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STEP 16

Configure the Branch LAN Interface (BR-R2)

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STEP 17

Enable HQ ↔ Branch Routing (Static Routes)

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STEP 18

Why Static Routes Don’t Scale (and Why OSPF Exists)

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STEP 19

STEP 19 — Remove Static Routes (CLEAN START)

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STEP 20

Configure OSPF (Single Area FIRST)

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STEP 21

Verify OSPF (IMPORTANT)

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STEP 22

Test End-to-End

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STEP 23

VLANs (WHY before HOW)

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STEP 24

Create VLANs (Layer 2 only)

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STEP 25

STEP 25 — Configure TRUNKS (Router-on-a-Stick preparation)

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STEP 26

Configure Router-on-a-Stick (HO-R1)

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STEP 27

VERIFY & TROUBLESHOOT ROAS

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STEP 28

DHCP per VLAN (AUTOMATIC IP ADDRESSING)

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STEP 29

DHCP Relay (ip helper-address)

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STEP 05

Basic Device Configuration

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