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| Tool | Switch Emulation | Legal Image Source | Cost | |------|----------------|--------------------|------| | | vIOS L2, IOU L2 | Cisco subscription | ~$199/year | | EVE-NG + vIOS L2 | vIOS L2 | Cisco CML export | Free + CML cost | | GNS3 + IOU L2 | IOU L2 image | Cisco CML export | Free + CML cost | | Packet Tracer | Simplified 2960 | Free with Cisco NetAcad | Free (limited) |
For network engineers, students, and IT professionals preparing for CCNA or CCNP certifications, GNS3 (Graphical Network Simulator-3) is the gold standard for virtualizing network topologies. While GNS3 excels at emulating routers, one of the most common hurdles users face is integrating Layer 2 switching capabilities. Specifically, the search for a is a frequent starting point for those looking to simulate real-world switching environments.