Netsim Network Simulator -

Tools like Containerlab , GNS3 (with a facelift), or even Python libraries like NetworkX + Mininet have created an ecosystem where spinning up 50 routers takes exactly 2 seconds and a YAML file.

But for the sake of this post, let’s treat netsim as the concept : Why you should ditch the physical lab (or the $10k hardware) I hear you: "But I need to test real code! ASICs matter!" netsim network simulator

Just do it in netsim first. What’s the coolest (or most destructive) thing you’ve built in a network simulator? Let me know in the comments. Tools like Containerlab , GNS3 (with a facelift),

net = Mininet(topo=MyNet()) net.start() net.pingAll() Stop being afraid to break things. Tools like Containerlab