Description
Practicing routing and switching for CCNA or CCNP, or validating a network design before rollout, normally means buying racks of expensive hardware. GNS3 lets you build virtual network topologies by drag and drop: place routers, switches, firewalls and VMs on a canvas, cable them up, and run real device images.
It is free and open source with tens of millions of downloads, a staple for network engineers studying and testing designs. GNS3 has a GUI and a backend server, so heavy labs can run on a server or VM.
Visual topologies:Drag devices onto a canvas, connect them and label interfaces and addresses.
Many device types:Routers, switches, end hosts, security devices, ATM and Frame Relay switches, NAT and cloud nodes.
Real images:Run vendor device images and virtual machines for realistic labs.
Snapshots and projects:Snapshot a lab at any point, roll back in one click, and import or export projects.
Bulk control:Start, pause or stop every node from the toolbar and add notes, shapes and pictures to the topology.
It is free and open source with tens of millions of downloads, a staple for network engineers studying and testing designs. GNS3 has a GUI and a backend server, so heavy labs can run on a server or VM.
Features
Visual topologies:Drag devices onto a canvas, connect them and label interfaces and addresses.
Many device types:Routers, switches, end hosts, security devices, ATM and Frame Relay switches, NAT and cloud nodes.
Real images:Run vendor device images and virtual machines for realistic labs.
Snapshots and projects:Snapshot a lab at any point, roll back in one click, and import or export projects.
Bulk control:Start, pause or stop every node from the toolbar and add notes, shapes and pictures to the topology.
