Navigate to the "CML Reference Platforms" section.
| Issue | Likely Cause | Solution | |-------|--------------|----------| | | High demand, CDN throttling | Use a download manager like wget -c on Linux or Download Master on Windows. | | ISO fails checksum | Corrupted download | Verify SHA256 hash from Cisco download page. Re-download if mismatch. | | "No bootable device" after install | BIOS boot order wrong | In hypervisor, ensure hard disk is first boot device, remove ISO. | | Web UI unreachable (HTTP 502) | Memory insufficient | Increase VM RAM to 16+ GB or reduce lab size. | | Node images won't start – KVM error | Nested virt disabled | For VMware: enable “Hardware Virtualization” in VM options. For VirtualBox: enable Nested VT-x. | cisco cml refplat iso download new
Navigating the Cisco Software Central site to locate, verify, and apply the newest Refplat images can be confusing due to entitlement constraints. This guide covers everything needed to download and deploy the latest Refplat ISO package for an environment. 1. Where to Download the New Cisco CML Refplat ISO Navigate to the "CML Reference Platforms" section
The refplat ISO bundle is a treasure trove of Cisco's virtual network devices. The exact contents vary by release, but you can generally expect to find: Re-download if mismatch
A critical update for users of is that the RefPlat ISO no longer contains the node images directly. According to recent community findings (as of June 2026), the RefPlat ISO for the free tier (e.g., refplat-20260409-free-iso.zip ) is now just a cryptographic verification package containing a signed ISO, signature files, a PEM certificate, and a verification script.
The release notes for CML 2.7 indicate that a supplemental refplat ISO might be necessary in addition to the base images, ensuring you download all necessary components. 4. Download the Refplat ISO