: Because the ISO itself is ~35 GB, expanding it or running CML directly with it mounted requires a healthy amount of storage buffer. Ensure your host system has at least 100 GB of free space.
Before downloading, carefully read the contents of the ISO file from the download portal. If it appears empty (only containing verification files), understand that the standard installation process will not work, and you will need to refer to the latest official release notes or community workarounds.
Click on or go directly to the Software Download section. cisco cml refplat iso download new
: Look for files labeled refplat-xxxxxx.iso or cml2_refplat_xxxx.iso .
Cisco Modeling Labs (CML) requires a Reference Platform (refplat) ISO : Because the ISO itself is ~35 GB,
Here’s a structured, solid report on the topic: .
If the Cisco servers are running slow, try using a different browser or a designated download manager. Alternatively, try downloading during off-peak hours. If it appears empty (only containing verification files),
As of May 2026, has been released. The download page now features multiple Reference Platform ISO files: the standard refplat-20260409-fcs.iso , a supplemental ISO, and a new refplat-20260326-ise.iso .