Lab Summary
- Lab Title: Logical IP Routing in a Multi-Router Network
- Level: Intermediate
- Estimated Time: 45–60 minutes
- Image Used: iol-l3
- Book Reference: CCNA 200-301 Official Cert Guide Vol.1, Chapter 3
Story Start: “Two Offices. One Broken Route.”
Your company just opened a second office. The goal? Connect both locations over a router-to-router link.
You set up the routers. Assign IPs. Enable interfaces.
But when PC1 in Office A tries to ping PC2 in Office B? Nothing.
You check the cabling. Interface status is fine. So what’s wrong?
Turns out, packets are leaving Office A… but have no clue how to get to Office B.
That’s where static routing comes in.
In this lab, you’ll build the full path — and watch every hop along the way.
This lab brings logical IP routing and static route configuration to life.
Why This Lab Matters
Routers don’t guess. They look at their routing table and decide: “Where should I send this next?”
This lab is your first look at how that decision really happens. You’ll configure three routers, connect two PCs, and build static routes that make the entire path work.
If you want to pass the CCNA and troubleshoot real networks, you need to understand this flow. Let’s go.
What You’ll Build
- 3 routers: R1, R2, R3
- 2 PCs in different subnets
- Serial + Ethernet links between routers
- Static routing between all nodes
Sample Routing Table Details:
| Router | Subnet | Outgoing Interface | Next Hop |
|---|---|---|---|
| R1 | 150.150.4.0/24 | Serial1/0 | 150.150.2.7 |
| R2 | 150.150.4.0/24 | Ethernet0/0 | 150.150.3.1 |
| R3 | 150.150.4.0/24 | Ethernet0/1 | Directly Connected |
Topology Diagram
Below is the topology diagram for this lab setup:
(Refer to Figure 3-10: Routing Logic: PC1 Sending an IP Packet to PC2)
Step-by-Step Implementation
Step 1: Build the Topology
- Add these devices in EVE-NG:
- Connect the devices:
- Connect PC1 → R1 (Ethernet0/1)
- Connect R1 → R2 (Serial1/0)
- Connect R2 → R3 (Ethernet0/0)
- Connect R3 → PC2 (Ethernet0/1)0).
Why This Step? Think of routers like delivery hubs. No physical path = no delivery. This is your network’s skeleton.
Step 2: Configure Router1 (R1)
1. Configure the LAN interface:
Router>enable
Router#configure terminal
Router(config)hostname R1
R1(config)#interface ethernet0/1
R1(config-if)#ip address 150.150.1.4 255.255.255.0
R1(config-if)#no shutdown
R1(config-if)#exitWhy This Step? You’re telling R1 how to forward packets beyond its local network. No static route = packet gets dropped.
