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To download the patched Cisco Modeling Labs (CML) Reference Platform (refplat) ISO, you must access the Cisco Software Central portal with an active CCO account associated with a CML purchase or the CML-Free tier.
The "patched" versions are typically released to fix issues with specific images (e.g., the refplat-20201110-fcs.iso replaced the original 20201020 version to fix crypto issues in IOSv). 🛠️ Official Download Process Step 1: Log in to Cisco Software Download. Step 2: Search for "Modeling Labs" in the product sidebar. Step 3: Select the latest release version (e.g., CML 2.9). Step 4: Look for the "Reference Platform ISO" file.
Standard ISO: Contains base images like IOSv, IOSvL2, and NX-OSv 9000.
Supplemental ISO: Contains larger images like Catalyst 9800-CL or SD-WAN.
Step 5: Download the file—note that it is often a .zip archive that must be extracted to get the .iso. 📂 Current Versioning (as of April 2026) Latest ISO: refplat-20241016-fcs.iso. Supplemental ISO: refplat-20241016-supplemental.iso.
Verification: Always check the SHA512 checksum on the Cisco Download Page after downloading to ensure the file isn't corrupted. 🔄 How to Apply/Patch the ISO
If you have already installed CML and need to swap to a newer "patched" ISO: CML 2.9 Release Notes - Cisco Modeling Labs v2.9
Cisco Modeling Labs (CML) uses Reference Platform (Refplat) ISO files to provide the virtual machine images (e.g., IOSv, NX-OSv, ASA) needed to run simulations
. While there is no single "patched" ISO that fixes all historical bugs, Cisco periodically releases updated Refplat ISOs alongside or shortly after major CML software updates to include newer image versions. Cisco DevNet Refplat ISO Overview
The Refplat ISO contains the node definitions and disk images required for lab simulations. Cisco DevNet Official Naming : Files usually follow a format like refplat-YYYYMMDD-fcs.iso.zip Versioning
: A new CML software release (e.g., v2.9) does not always guarantee a new Refplat ISO; if the images haven't changed, Cisco may recommend using the previous version. Latest Versions : As of late 2024/early 2025, versions such as refplat-20241016-fcs-iso.zip
for CML 2.8 and maintenance releases for CML 2.9 (Nov 2025) are the current standards. Cisco DevNet Download Locations Access depends on your specific CML license type: 'refplat-image.iso' download - from where?
Top Rated Answers. Karlo Bobiles. 6 years ago. Hello chris.happel-home, Please log into your Cisco Learning Network Store Account: Cisco Learning Network CML 2.9 Release Notes - Cisco Modeling Labs v2.9
The Reference Platform (refplat) ISO is a critical component for Cisco Modeling Labs (CML) as it contains the virtual machine images (IOS, ASA, Linux, etc.) required to build network topologies. While the CML server runs the orchestration, the ISO provides the "brains" for the simulated nodes. Latest Download Information
Cisco periodically releases updated "patched" or supplemental ISOs to include new node definitions and bug fixes. Cisco Modeling Labs - Free - Cisco DevNet
I understand you're looking for information about Cisco CML (Cisco Modeling Labs) and references to a "patched" refplat ISO download. Let me provide some clear and helpful guidance on this topic.
Set as preferred source
cml-refplat-generic-x86_64-2.7.0-XX.iso)After install, access the web UI at https://<cml-ip> and import your official Cisco images (downloaded separately from the same portal).
If you're a licensed user looking for help with legitimate installation issues (e.g., patching a known bug with an official hotfix from Cisco), please:
Bottom line: There is no legitimate "patched refplat ISO" for CML. If you see references to one online, it's almost certainly pirated software and using it carries significant legal and security risks. Pursue legal options instead.
Cisco CML Refplat ISO Download: Patched vs. Standard Reference Platforms
The Cisco Modeling Labs (CML) Reference Platform ISO—often called the refplat ISO—is a foundational requirement for any network simulation. While standard releases provide a base set of images, "patched" or updated versions are frequently released to fix bugs, add new node types, or provide security updates for the virtual operating systems. Understanding the Refplat ISO
The refplat ISO is separate from the CML controller OVA. While the OVA contains the management interface and software, the ISO contains the actual VM images for Cisco nodes like IOSv, IOSvL2, ASAv, and Catalyst 9000v.
Standard ISO: Included with every major version release (e.g., CML 2.8 or 2.9).
Patched/Updated ISO: Periodically released to address specific image bugs. For example, version 20201110-fcs replaced the older 20201020-fcs to include crypto-enabled IOSv images and fixed node definitions.
Supplemental ISO: Starting with CML 2.9, Cisco provides a supplemental ISO that includes high-resource images like Catalyst 9800-CL and Cisco ISE, though these are typically not included in the CML-Free tier. How to Download the Latest Patched ISO
Downloading the correct files requires an active Cisco account and a valid license for CML-Personal, Personal Plus, or Enterprise.
Cisco Modeling Labs (CML) requires two primary files for installation: the controller OVA (the software platform) and the Reference Platform (refplat) ISO, which contains the virtual device images like IOSv and ASA. "Patched" or updated versions of these files are occasionally released by Cisco to fix bugs, such as missing crypto images or incorrect node definitions. Downloading the Refplat ISO
You can obtain the latest stable or "patched" refplat ISO files through official Cisco channels based on your license type:
CML-Free: Register at the CML-Free Sign-up page. Once confirmed, log in to Cisco Software Central and select the CML-Free release (e.g., 2.8 or 2.9) to find the current ISO archive.
CML-Personal: Log in to your Cisco Learning Network Store account. Navigate to your active order and click Download to be redirected to the official software download page for the latest images.
Enterprise/Education: Access files directly via Cisco Software Central using a CCO ID associated with your organization's purchase. Applying a Patched or Updated ISO
If you need to replace an existing ISO with a patched version on an already running CML instance, follow these steps: 'refplat-image.iso' download - from where?
9 Sept 2020 — Top Rated Answers. Karlo Bobiles. 6 years ago. Hello chris.happel-home, Please log into your Cisco Learning Network Store Account: Cisco Learning Network Cisco Modeling Labs - Free - Cisco DevNet
Download the files for CML-Free from Cisco's Software Central (SWC) site. You do not need to download all of the files from a CML- Cisco DevNet
Downloading Files for CML Installation - Cisco Modeling Labs v2.9
Helpful Post: Downloading Patched Cisco CML RefPlat ISO cisco cml refplat iso download patched
Introduction
Cisco CML (Cisco Modeling Labs) is a powerful network simulation platform that allows users to design, configure, and test network topologies. The RefPlat (Reference Platform) ISO is a crucial component of CML, providing a pre-built platform for users to create and simulate network topologies. In this post, we'll guide you through the process of downloading a patched Cisco CML RefPlat ISO.
Prerequisites
Downloading the Patched Cisco CML RefPlat ISO
cml-refplat-2.2.1-patched.iso) and click on the download link.Patched ISO Details
The patched Cisco CML RefPlat ISO is a modified version of the original ISO, which addresses known issues and provides additional features. The patched ISO version may include:
Installation and Setup
After downloading the patched RefPlat ISO, follow these general steps to install and set up your CML environment:
Conclusion
In this post, we've provided a step-by-step guide to downloading a patched Cisco CML RefPlat ISO. By following these steps, you'll be able to obtain a patched version of the RefPlat ISO, which includes bug fixes, new features, and security enhancements. If you encounter any issues during the download or installation process, feel free to ask in the comments below.
Additional Resources
Note: This post is for informational purposes only and is not an official Cisco publication. Use of the patched RefPlat ISO is subject to Cisco's terms and conditions.
Cisco CML RefPlat ISO Download Patched
The Cisco CML (Cisco Modeling Labs) RefPlat ISO is a reference platform used for network modeling and simulation. If you're looking to download a patched version of the RefPlat ISO, here's what you need to know:
What is Cisco CML RefPlat ISO?
The Cisco CML RefPlat ISO is a customized Linux distribution used as a reference platform for network modeling and simulation in Cisco Modeling Labs. It provides a pre-configured environment for users to create and test network topologies.
Why do I need a patched version?
You might need a patched version of the RefPlat ISO to address specific vulnerabilities, bugs, or compatibility issues. Patched versions are typically released to fix known issues or security vulnerabilities in the original ISO.
How to download the patched Cisco CML RefPlat ISO?
To download the patched Cisco CML RefPlat ISO, follow these steps:
Caution: When downloading any patched ISO, ensure you're getting it from a trusted source to avoid any potential security risks.
Additional Information
If you have any specific questions or need more information on downloading the patched Cisco CML RefPlat ISO, feel free to ask!
Please let me know if you want to add/remove anything.
Also let me know if this meets your expectation or you want me to make any changes.
It was my pleasure to assist you. Have a great day!
The search for "cisco cml refplat iso download patched" is a classic engineering trap: you think you need a hacked file, but what you really need is a correct workflow.
Ultimately, the only safe and sustainable path is the official Cisco Software Center. The "patched" scene is a relic from the old VIRL days when licensing was restrictive. Today, with CML Personal, there is simply no good reason to risk your lab's security for a broken, malware-ridden "patched" ISO.
Pro Tip: If you are a student, check the Cisco Networking Academy. You may get free access to CML for educational purposes, making the entire "patch" conversation irrelevant. Happy labbing!
Disclaimer: This article is for educational purposes regarding legitimate licensing and hardware compatibility. Modifying Cisco software violates the EULA. Always use officially sourced and licensed software.
To download the Cisco Modeling Labs (CML) Reference Platform (refplat) ISO
, including the latest updated or "patched" versions, you must access the official Cisco software portal using your Cisco Connection Online (CCO) ID Official Download Sources Cisco Software Central
: The primary location for all CML files, including the base and supplemental reference platforms. Cisco Learning Network Store : If you purchased CML-Personal , log in to your My Account
page to find the direct download link associated with your order.
: For the latest releases (e.g., CML 2.9), you can access images via the Cisco U My Subscriptions ISO Types & Updates Cisco Modeling Labs - Free - Cisco DevNet To download the patched Cisco Modeling Labs (CML)
Download the files for CML-Free from Cisco's Software Central (SWC) site. You do not need to download all of the files from a CML- Cisco DevNet 'refplat-image.iso' download - from where?
Top Rated Answers. Karlo Bobiles. 6 years ago. Hello chris.happel-home, Please log into your Cisco Learning Network Store Account: Cisco Learning Network CML in place upgrade, procedure to get get ALL the images
Cisco Modeling Labs (CML) uses a Reference Platform (refplat) ISO to provide the virtual machine images for network simulation. Official "patched" versions are generally released as updated ISO files (e.g., refplat-20240225-fcs.iso) to include new device features or bug fixes for images like IOSv, ASAv, or Nexus 9000v. Reference Platform Overview
The refplat ISO is a separate, mandatory download from the main CML controller (OVA) file. It contains the entire library of Cisco device images permitted under your license.
Standard vs. Supplemental: Cisco often provides a "standard" ISO with common images and a "supplemental" ISO for larger or specific images, such as Catalyst SD-WAN, ISE, or Splunk Enterprise.
Version Compatibility: Images from older refplat ISOs typically work on newer CML versions, but newer images (like IOL or SD-WAN introduced in 2.7) often require upgrading the CML controller software to function correctly.
Local Storage Requirement: Modern CML versions (v2.7+) require copying the ISO contents to the local disk rather than mounting it as a live CD/DVD during runtime to improve performance. Key Features in Recent Updates Description IOL/IOL-L2 Support
Recent ISOs include IOS on Linux (IOL) images, which are lightweight and support serial interfaces. New Hardware Images
Updates have added Catalyst 9800-CL Wireless Controllers and Catalyst 9000v (beta) images. CML-Free Tier
A restricted refplat ISO for the free tier includes IOL, IOL-L2, ASAv, and basic Linux hosts, limited to 5 nodes. Copy Refplat ISO to Disk - Cisco Modeling Labs v2.9
Cisco Modeling Labs (CML) "patched" or "supplemental" refplat ISO
files are critical updates that expand or fix the library of network operating system images available for your simulations. Unlike the base software (OVA), which controls the dashboard, the refplat ISO contains the actual "brains" of the devices like routers, switches, and firewalls. Cisco DevNet Quick Download Guide To get the latest version, you must use your Cisco CCO ID and navigate through the following paths: For Paid Users : Log in to the Cisco Learning Network Store , find your active order, and click to reach the Software Central page. For Free Tier Users : Use the dedicated CML-Free Download Page Crucial Tip : The file is usually a unzip it to get the file before attempting to mount it in VMware or CML. Cisco Learning Network Review of Recent "Patched" & Supplemental Releases Cisco occasionally releases "supplemental" ISOs (e.g., refplat-20240322-supplemental.iso ) to add resource-heavy or newly supported images. Cisco Learning Network FAQ - Cisco Modeling Labs v2.x
Cisco Modeling Labs (CML) relies on a Reference Platform (refplat) ISO to provide the virtual machine images—such as IOSv, NX-OSv, and ASAv—required to run network simulations. For users seeking a "patched" or most up-to-date version, it is essential to understand that Cisco typically releases cumulative ISO updates rather than individual patches for the ISO itself. Official Sources for CML Refplat ISO Downloads
To ensure security and compatibility, you should only download these files from authorized Cisco Software Central (SWC) portals.
CML Personal Users: Log into the Cisco Learning Network Store, locate your active order, and click Download to be redirected to the specific "patched" or latest release page.
CML Free Tier: Register via the CML-Free Sign-up page to access the free downloads, which currently include a subset of five nodes.
Latest Stable Version: As of late 2024/early 2025, the standard reference platform is often identified by a filename like refplat-20241016-fcs.iso. Understanding "Patched" Refplat ISOs
In the context of CML, "patched" usually refers to one of two scenarios:
Supplemental ISOs: Cisco sometimes releases a "supplemental" ISO (e.g., refplat-20241016-supplemental.iso) containing newer or specialized images like SD-WAN Controllers or Catalyst 9000v that were not in the base release.
Cumulative Updates: Newer CML server versions (e.g., 2.8 or 2.9) often come with a refreshed base ISO that includes the latest software fixes for the virtual images. How to Apply the Latest Refplat to Your CML Instance CML Installation Guide - Cisco Modeling Labs v2.9
I can’t help with locating, downloading, or distributing patched or pirated software, including unofficial or cracked ISOs for Cisco CML or other commercial products. Assisting with that would facilitate copyright infringement and potential security risks.
I can, however, help with several lawful, useful alternatives. Which would you like?
Pick one (or multiple) and I’ll produce a detailed, engaging guide.
Downloading and Using Cisco CML RefPlat ISO: A Comprehensive Guide
Cisco CML (Cisco Modeling Labs) is a network simulation platform that allows network engineers and architects to design, configure, and test network topologies in a virtual environment. The RefPlat ISO is a reference platform used in CML to create and run virtual machines that mimic real-world network devices. In this article, we will guide you through the process of downloading and using the Cisco CML RefPlat ISO, including how to obtain a patched version.
What is Cisco CML RefPlat ISO?
The RefPlat ISO is a bootable image used in CML to create a reference platform for virtual machines. It provides a base operating system and a set of pre-installed packages that allow virtual machines to function as network devices, such as routers, switches, and firewalls. The RefPlat ISO is a crucial component of CML, as it enables users to create and test complex network topologies.
Why Do You Need to Download Cisco CML RefPlat ISO?
There are several reasons why you might need to download the Cisco CML RefPlat ISO:
Downloading Cisco CML RefPlat ISO
To download the Cisco CML RefPlat ISO, follow these steps:
Patched Cisco CML RefPlat ISO
Sometimes, you may need a patched version of the RefPlat ISO to fix bugs or add new features. A patched version of the ISO can be obtained from Cisco or from other sources, such as:
How to Verify the Integrity of the Downloaded ISO
After downloading the RefPlat ISO, it's essential to verify its integrity to ensure it hasn't been tampered with during the download process. You can do this by: Sign up for a free Cisco CCO account
Installing and Configuring Cisco CML RefPlat ISO
Once you've downloaded and verified the RefPlat ISO, follow these steps to install and configure it:
Tips and Best Practices
Here are some tips and best practices to keep in mind when working with the Cisco CML RefPlat ISO:
Conclusion
In conclusion, downloading and using the Cisco CML RefPlat ISO requires careful attention to detail and adherence to Cisco guidelines. By following the steps outlined in this article, you can successfully download and use the RefPlat ISO, including a patched version. Remember to verify the integrity of the downloaded ISO and follow best practices for installation and configuration.
Additional Resources
FAQs
By following this comprehensive guide, you'll be able to successfully download, install, and use the Cisco CML RefPlat ISO, including a patched version.
The Reference Platform (refplat) ISO for Cisco Modeling Labs (CML) provides the virtual machine images (e.g., IOSv, IOSvL2, NX-OSv) required to run simulations. When a "patched" or updated version is released, it typically contains new node definitions or fixed images. How to Download the Refplat ISO
The method for downloading the refplat ISO depends on your specific license type: CML-Personal / Personal Plus: Log in to the Cisco Learning Network Store. Navigate to My Account > My Orders. Click the Download button next to your active order.
You will be redirected to the Cisco Software Download page to select the latest release. CML-Free Tier: Register for a Cisco CCO account if you don't have one. Sign up via the CML-Free page.
Go to the Cisco Software Central (SWC) site to find the refplat-*.iso.zip file. CML-Enterprise / Education: Access Cisco Software Central.
Search for Modeling Labs and select your version to find the ISO. Patching & Versions
Cisco occasionally releases updated ISOs to fix bugs or add images. For example: Preparing for Installation - Cisco Modeling Labs v2.9
The download had been stuck at 84% for three hours, a digital stalemate between a flickering DSL light and the vast, indifferent servers of the Cisco Software Central. For Elias, a network engineer whose home lab was held together by caffeine and sheer willpower, the "refplat" ISO was the holy grail.
The Cisco Modeling Labs (CML) Reference Platform ISO wasn’t just a file; it was the DNA of his virtual world. It contained the heavy hitters: the IOSv images, the hungry NX-OSv nodes, and the elusive ASAv firewalls. But the official release had a flaw—a bug in the node definitions that caused his spanning-tree topologies to collapse like a house of cards every time he tried to simulate a data center migration.
He had heard whispers on a defunct subreddit about a "patched" version. It wasn't a pirate copy—Elias had his legitimate license—but a community-maintained revision where the YAML definitions had been hand-tuned by engineers who had spent too many nights staring at packet captures.
He found the link on an obscure FTP server hosted out of a university in Brno. The filename was a string of alphanumeric poetry: refplat-20240312-patched-community-v3.iso.
As the progress bar finally nudged to 100%, Elias felt a rush of adrenaline. He mounted the ISO to his ESXi host and initialized the CML controller. The fans on his refurbished Dell PowerEdge roared to life, a mechanical scream that echoed in the small spare bedroom.
"Come on," he whispered, watching the console logs scroll by in a blur of white text on a black background.
Loading node definitions... [OK]Verifying image checksums... [OK]Starting bridge interfaces... [OK]
He logged into the dashboard and dragged three Nexus 9000v switches onto the canvas. He wired them in a triangle, a classic test of loop prevention. In the old ISO, the CPU would have spiked to 100% as a broadcast storm devoured the virtual backplane. He clicked 'Start.'
The icons turned green. He opened a console to Switch-1 and typed show spanning-tree. The output was beautiful. The blocking ports were assigned correctly. The convergence was instantaneous. The "patched" ISO had worked.
For the first time in weeks, the virtual world was stable. Elias leaned back, the blue light of the monitor reflecting in his glasses. Outside, the sun was beginning to rise, but in the simulated rack of his mind, the lights were finally blinking in perfect, synchronized harmony.
I’m not sure which specific help you want. I’ll assume you want concise steps to find, download, patch, and install Cisco CML (refplat) ISO. If you meant something else, say so.
Prerequisites: A Linux workstation (Ubuntu 22.04).
Mount the official ISO:
mkdir /mnt/cml_iso
mount -o loop cml-refplat-2.7.0.iso /mnt/cml_iso
Extract the contents:
cp -r /mnt/cml_iso /tmp/cml_build
Extract the INITRD (Initial RAM Disk): This is where the drivers live.
cd /tmp/cml_build
mkdir initrd_extract
cd initrd_extract
zstd -d ../casper/initrd.zst | cpio -id
Inject a missing driver (Example: Realtek R8169):
Download the latest DKMS source for your NIC. Compile it into a .ko (kernel object) and copy it into the lib/modules/ directory within the extracted initrd.
Rebuild the INITRD:
find . | cpio -o -H newc | zstd > ../casper/initrd.zst
Repack the ISO:
xorriso -as mkisofs -r -V "CML_REFPLAT_PATCHED" -J -joliet-long -cache-inodes \
-b isolinux/isolinux.bin -c isolinux/boot.cat -boot-load-size 4 -boot-info-table \
-no-emul-boot -eltorito-alt-boot -e boot/grub/efi.img -no-emul-boot \
-isohybrid-gpt-basdat -o cml-refplat-2.7.0-patched.iso /tmp/cml_build
This process is complex. Most engineers who need a "patched" ISO for hardware compatibility simply use VMware ESXi or Proxmox VE instead of bare metal, because the virtual hardware is standardized and the official ISO works perfectly as a VM guest.
software.cisco.com → Modeling Labs → CML 2.x ISOCisco Modeling Labs (CML) 2.0+ uses the RefPlat (Reference Platform) model. Instead of a monolithic VM, you download an ISO installer for the CML controller (Ubuntu-based) and separately source Cisco IOSv, IOSvL2, ASAv, CSR1000v, or XRv9000 images.
A “patched” ISO typically means one of three things:
None of these are sanctioned by Cisco. Using them will void support, may break lab reproducibility, and could expose your network to security risks.
