Introduction to Cisco Modeling Labs Cisco Modeling Labs (CML) v2.x is a network simulation platform. This site provides product documentation and other information to assist you in installing and using all of the CML product offerings. If you were a user of the 1.x releases, note that CML 2.0 was a ground-up rewrite of the 1.x version of the product. See the Overview of Cisco Modeling Labs 2.x for