Downloading and Using Cisco CML RefPlat ISO: A Comprehensive Guide
Installing and Configuring Cisco CML RefPlat ISO cisco cml refplat iso download patched
Cisco CML (formerly VIRL) is a network simulation platform that allows you to model Cisco networks. The refplat (reference platform) ISO contains the official Cisco IOS, IOS-XE, NX-OS, and other device images needed to run nodes in CML. Downloading and Using Cisco CML RefPlat ISO: A
CML is paid software. It requires a valid license (Smart License via Cisco DNA Center or an on-premises license file). Some enterprising individuals release "patched" ISOs or Python scripts that modify the CML source code (/usr/local/cml/...) to disable license checks. Caveat: Using these is a direct violation of Cisco's EULA (End User License Agreement). Cisco actively detects these via telemetry, and your access to software updates via Cisco.com will be revoked if caught. The License Bypass (The Illegal Patch) CML is
Have a legitimate question about adding custom images to CML? Ask in the Cisco DevNet community – no patches required.