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NetSim Network Simulator Cisco Network Simulator

Most Advanced Network Simulator Designed for Cisco Certification Training.

The Boson™ NetSim™ Network Simulator™ is an application that simulates Cisco Systems' networking hardware and software and is designed to aid the user in learning the Cisco IOS command structure. With NetSim you can learn and master the skills necessary to successfully complete your Cisco certification.


  • Gain the hands-on experience with guided labs covering the skills necessary to successfully complete your certification.
  • Share labs, lab packs and topologies with the new NetSim Community
  • Synchronize NetSim content across multiple devices in the cloud
  • Track lab completion history directly in NetSim
  • Connect devices with fewer clicks using improved topology creation tools
  • Annotate topologies with Notes and labels
  • Rearrange and organize the new dockable user interface
NetSim Network Simulator Lab and Topology view

NetSim Product Comparison

Additional NetSim Resources

Advantages of Software-Based Network Simulation

Boson NetSim is a versatile tool and valuable asset for self-paced learning, classroom instruction and corporate training.
For many individuals, the availability of Cisco routers and switches is often limited. The cost and fragility of equipment makes rack rentals impractical at this level. Boson NetSim makes it possible to design and configure a network with 44 different router models and 7 different switch models* to choose from without having to pay a lot of money, or worrying about transporting and damaging valuable equipment.
NetSim's router, switch and station simulation components contained within the software are the most advanced in the industry. Within NetSim, simulation of routers, switches and PCs is included in a completely customizable drag-and-drop network-simulation package. Furthermore, Boson NetSim simulates both switching bridge tables and routing protocol tables to allow you to go OUTSIDE of the labs and create your own labs using the Boson Network Designer™.

NetSim Network Simulator, Router Simulator and Switch Simulator

The Boson NetSim™ Network Simulator™ is an application that simulates Cisco Systems'® hardware and software. NetSim is designed to help you learn the Cisco IOS® command structure focused around the Cisco certification tracks.
NetSim utilizes Boson's proprietary Network Simulator, Router Simulator™ and EROUTER™ software technologies, along with the Boson Virtual Packet Technology™ engine, to create individual packets. These packets are routed and switched through the simulated network, allowing NetSim to build an appropriate virtual routing table and simulate true networking. Other simulation products on the market do not support this level of functionally. Boson NetSim provides the most versatility and support in the market. NetSim software also includes comprehensive labs covering the technologies and topics that are covered on the corresponding certification.
*Although all devices can be added to a custom topology, the commands needed to configure some devices are restricted depending on the license version. For example, 3550 switches can be added to a CCNA custom topology. However, the commands needed to configure a 3550 switch are only supported in NetSim for ENCOR and NetSim for ENARSI.