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Containerlab is a powerful CLI tool that enables network engineers to design, deploy, and test complex network topologies using containerized network OSes like Nokia SR Linux, Arista cEOS, Cisco XRd, and Juniper cRPD. It offers a lightweight, scalable, and efficient alternative to traditional VM-based labs by leveraging Docker containers.
Read the full article here: Network Automation Engineering with Containerlab
You Should Know:
1. Installing Containerlab
Install Containerlab on Linux curl -sL https://get.containerlab.dev | sudo bash Verify installation containerlab version
2. Basic Containerlab Commands
Create a lab from a YAML file containerlab deploy -t topology.yml List running labs containerlab inspect --all Destroy a lab containerlab destroy -t topology.yml Start/stop a lab containerlab start -t topology.yml containerlab stop -t topology.yml
3. Sample YAML Topology
name: my_network_lab topology: nodes: router1: kind: vr-sros image: ghcr.io/nokia/srlinux switch1: kind: vr-veos image: ghcr.io/arista/ceos links: - endpoints: ["router1:eth1", "switch1:eth1"]
4. Using VS Code Plugin for Containerlab
- Install the Containerlab extension in VS Code.
- Visualize and manage labs directly from the editor.
5. Testing Network Connectivity
Enter a container shell docker exec -it router1 bash Ping test ping switch1
6. Advanced Automation with Ansible
- name: Configure network devices hosts: routers tasks: - name: Apply VLAN config ios_config: lines: - vlan 10 - name IT_NETWORK
7. Monitoring with Prometheus & Grafana
Export metrics from SR Linux telemetry: endpoints: - name: prometheus url: http://prometheus:9090
What Undercode Say:
Containerlab revolutionizes network automation by simplifying lab deployments, reducing resource overhead, and integrating seamlessly with DevOps workflows. Its compatibility with cloud-native tools like Kubernetes and Ansible makes it indispensable for modern network engineers.
Key Commands Recap:
Check Docker containers docker ps -a Export lab configuration containerlab export -t topology.yml --format dot > topology.dot Convert to PNG (requires Graphviz) dot -Tpng topology.dot -o topology.png
Expected Output:
- A fully functional containerized network lab.
- Automated CI/CD pipelines for network testing.
- Faster certification prep and real-world scenario testing.
Prediction:
Containerlab adoption will surge as enterprises shift from hardware-based labs to cloud-native, scalable network testing environments.
For more details, visit the original article: Network Automation Engineering with Containerlab.
IT/Security Reporter URL:
Reported By: Gko99 Networkautomation – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
