Cisco Modeling Labs (CML) is a network emulation platform that uses virtualization to run virtual Cisco routers and switches with real Cisco IOS. It lets learners build networks on a personal computer or server and configure nearly everything available on physical devices. section 1.4.3
CML provides realistic practice but has practical trade-offs:
- Costs around $200 per year, making it cheaper than assembling physical hardware but not free. section 1.4.3
- Requires substantial CPU and RAM, so larger networks may be difficult to run without a powerful computer. section 1.4.3
- Offers more realistic IOS behavior than a simulator because its virtual devices run real Cisco IOS. section 1.4.3
Virtual CCNA lab
Create a virtual network on a computer or server, start several virtual Cisco devices, and configure them as you would physical routers and switches. section 1.4.3
