labctl tool lets engineers spin up a two-node network lab with a single YAML file

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A developer has released labctl, an open-source command-line tool built on top of Containerlab that simplifies creating throwaway network lab environments. Users define their entire lab topology in a single YAML file, specifying nodes, links, management subnets, and startup configurations. The tool supports reusable profiles that apply preferred addressing and settings to any topology without manual re-entry each time. Deployment takes only a few seconds, producing running containers accessible via Docker, and cleanup is scoped to remove only the named lab without affecting unrelated containers. The project ships with example labs, including a two-node point-to-point setup and a three-node BGP lab, and requires only a Linux host with Docker and Containerlab installed.

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