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Network Lab Setup Guide

Overview

This guide explains how to set up and use the ContainerLab-based network automation lab.

Prerequisites

  • ContainerLab (clab) installed
  • Docker running
  • Internet connection to pull required images

Topology

The network lab consists of:

  • Router R1 (Cisco IOL)
  • Switch S1 (Cisco IOL in L2 mode)
  • Connection between R1 and S1 via eth1 interfaces

Available Commands

Setup the Network Lab

make setup

Deploys the network lab with the defined topology.

Check Status

make status

Shows the status of all nodes in the network lab.

Stop the Network Lab

make stop

Stops all containers in the network lab.

Destroy the Network Lab

make destroy

Completely removes the network lab containers and associated resources.

Restart the Network Lab

make restart

Stops and then redeploys the network lab.

Connect to a Node

make connect host=R1

Connects to a specific node in the network lab (replace R1 with the desired node name).

View Logs

make logs

Shows logs for all containers in the network lab.

Help

make help

Displays help information about available commands.

Troubleshooting

Network Subnet Conflicts

If you encounter subnet conflicts, the lab is configured to use:

  • IPv4 subnet: 172.30.30.0/24
  • IPv6 subnet: 3fff:172:30:30::/64

Image Pull Issues

If images fail to pull, ensure you have internet connectivity and the correct image names in netlab/topology.yml.

Topology Configuration

The topology is defined in netlab/topology.yml and can be modified as needed for different scenarios.