Cat9kv-prd-17.12.01prd9.qcow2 May 2026

| Feature | cat9kv-prd-17.12.01prd9 | iosv-l2 (standard) | vios-l2 | | :--- | :--- | :--- | :--- | | Base OS | IOS-XE 17.12 (Linux kernel) | Legacy IOS 15.x | IOS-XE 16.x (obsolete) | | NETCONF/YANG | Full native support | None | Partial | | VXLAN | Yes (routing + bridging) | No | Limited bridging | | Memory Footprint | 8-16 GB | 1-2 GB | 2-4 GB | | Accuracy for Cat9k | 95% (ideal for prod testing) | Not applicable | 70% |

Conclusion: Use cat9kv for production-emulation; use vios-l2 for light routing labs only.

Cause: Using a thin-provisioned QCOW2 on a nearly full hypervisor disk.
Fix: Ensure at least 20 GB free before first boot.

This image is proprietary Cisco software. You must have a valid Cisco support contract or subscription (e.g., CML Personal/Enterprise, or Cisco DevNet) to legally use it. Unauthorized distribution violates Cisco licensing.

If you want, I can provide a short VM definition file (libvirt XML) tuned for a Cat9kV image, a step-by-step virt-install command, or commands to convert and verify the QCOW2 file.

(Invoking related search suggestions...)

The file cat9kv-prd-17.12.01prd9.qcow2 represents the virtualized Cisco Catalyst 9000 Series switch (Cat9kv)

running IOS XE Dublin 17.12.1. This specific image is designed for network engineers and architects to simulate high-end campus switching environments in virtual labs like Cisco Modeling Labs (CML), EVE-NG, or GNS3. Core Technical Specifications Operating System: Cisco IOS XE Dublin 17.12.1.

Release Type: Extended Maintenance Release (EMR), offering a 36-month support lifecycle.

Hardware Simulation: Simulates the Unified Access Data Plane (UADP) or Silicon One (Q200) ASICs. Resource Requirements:

RAM: Minimum 16GB–18GB for UADP mode; approximately 12GB for Q200 mode.

CPU: 2 or more vCPUs recommended for stable boot performance.

Format: QEMU Copy-On-Write 2 (.qcow2), optimized for KVM-based hypervisors. Key Features of IOS XE 17.12.1

As an EMR release, 17.12.1 introduces several enhancements to the virtual Catalyst portfolio:

EVPN Fabric Enhancements: Support for IPv4 Overlay Multicast over an IPv6 Underlay and increased VNI scaling up to 1,000 instances.

Programmability: Introduction of PROTO encoding for gNMI operations and new SNMP-to-YANG mappings for POE, LLDP, and CPU monitoring.

Security & Identity: Optimized RADIUS packet DSCP marking and changes to Secure Unique Device Identity (SUDI) certificate trustpoints. cat9kv-prd-17.12.01prd9.qcow2

VXLAN Support: DHCP Rogue Server Protection and ARP inspection within VXLAN environments. Lab Implementation (EVE-NG/GNS3)

To deploy this specific image in a lab environment like EVE-NG, follow these standard steps: What's New in Cisco IOS XE Dublin 17.12.x - Release Notes

cat9kv-prd-17.12.01prd9.qcow2 is a virtual disk image for the Cisco Catalyst 9000v

, which is the virtualized version of Cisco's Catalyst 9000 series switches running the operating system. Technical Specifications Operating System: Cisco IOS-XE Software Version: 17.12.1 (Dublin release) File Format:

QCOW2 (QEMU Copy-On-Write), optimized for KVM-based hypervisors File Size: Approximately MD5 Checksum: e587e92186f42bdf69d7fa27f34425f7 Usage and Deployment

This image is primarily used for network simulation, lab testing, and software-defined networking (SDN) validation. It is commonly deployed in: Cisco Modeling Labs (CML): Often included as part of the CML node library.

Used in professional network emulation for testing high-bandwidth traffic and complex topologies.

Available as a supported appliance for network architecture prototyping. Key Features & Capabilities Virtual Boot Modes:

Supports multiple boot modes depending on the simulation requirements, including Regular UDAP Silicon 1 Q200 Unified Access Data Plane (UADP) SD-Access Testing:

Ideal for testing features like Cisco DNA Center (DNAC) integration and Catalyst Center workflows. Limitation Note:

As a virtualized platform, it may not support 100% of the hardware-specific ASIC features found in physical Catalyst 9300 or 9500 switches. Getting the Image This file is typically obtained through a Cisco Modeling Labs (CML) subscription or via the Cisco Software Central portal for users with appropriate service contracts. Catalyst 9000v - - EVE-NG

The identifier cat9kv-prd-17.12.01prd9.qcow2 refers to a specific virtual machine image for the Cisco Catalyst 9000v

(Cat9kv) virtual switch running IOS-XE version 17.12.01. This file is primarily used for network simulation and lab environments rather than being a "topic" for an academic paper.

If you are looking for documentation or white papers related to this image, you should focus on its role in virtualized network modeling and the features of the Catalyst 9000v Key Resources and Documentation

Official Product Documentation: Detailed information on the use and function of this file can be found in the Cisco Modeling Labs Cat 9000v Guide.

Technical Presentations: Cisco Live sessions such as BRKOPS-2455 and DEVNET-1441 provide in-depth technical backgrounds on operating virtualized Catalyst switches. | Feature | cat9kv-prd-17

Installation Guides: For those looking to use this specific .qcow2 image in simulation tools, step-by-step instructions are available for platforms like EVE-NG and Containerlab. Technical Overview Virtualization: The

is a virtualized form of the physical Catalyst 9000 series switches, built as a QEMU VM often packaged for Docker or KVM environments.

ASIC Simulation: It simulates the dataplane ASICs found in physical hardware, specifically the Cisco UADP (Unified Access Data-Plane) and the Silicon One Q200.

Resource Requirements: This specific image version (17.12.01) is resource-intensive, typically requiring at least 4 vCPUs and 12-18GB of RAM per instance in a lab environment.

Licensing: Advanced features like BGP routing on this virtual image often require configuring specific license levels, such as Network Advantage or DNA Advantage, within the CLI. Catalyst 9000v - - EVE-NG

cat9kv-prd-17.12.01prd9.qcow2 a virtual image for the Cisco Catalyst 9000v (Cat9kv)

, a virtual switch designed to run the IOS-XE 17.12.1 software in virtualized lab environments like Cisco Modeling Labs (CML) Technical Specifications & Resource Requirements

To run this specific image effectively, your virtualization host must meet the following hardware requirements: Memory (RAM): A minimum of is required for the switch to boot and function properly. are recommended for acceptable boot performance. Virtual Disk: The image is in format, which is native to QEMU/KVM environments. Implementation in Lab Environments

The Cat9kv image can be used in various modes depending on your testing needs: EVE-NG Deployment:

It is compatible with EVE-NG Pro (v5.0.1-142+) and Community (v5.0.1-24+). Cisco Modeling Labs (CML): This image is typically included in the CML image package and resides within the reference ISO. GNS3 Integration: You can import this using the GNS3 Cisco Catalyst 9000v appliance Key Features & Limitations Layer 2 vs. Layer 3:

By default, it often boots with basic Layer 2 switching. Advanced features like

or Layer 3 routing may require enabling specific feature sets and a subsequent reboot. Performance Issues:

Some users have reported issues where high-bandwidth traffic fails even when ICMP pings succeed. Ensure the MTU is configured correctly, as mismatched MTU can lead to fragmentation and performance degradation in virtual tunnels. Wait Time:

Be patient during boot; virtual interfaces and switching features can take several minutes to become operational after the appliance reaches the command line. Official Documentation & Support

For detailed configuration guides and official feature support lists, refer to: Cisco Catalyst 9000v Data Sheet Cisco Live Session: Virtualizing Your Lab with Cat9kv Do you need help with the CLI commands

to initialize the advanced routing features on this specific image? This specific file is an enabler of modern

The file cat9kv-prd-17.12.01prd9.qcow2 is a virtual disk image for the Cisco Catalyst 9000v, a virtualized version of Cisco's flagship Catalyst 9000 switching platform. It is designed for use in network simulation and virtualization environments like Cisco Modeling Labs (CML), EVE-NG, and GNS3. Technical Specifications Software Version: Cisco IOS XE 17.12.01 (Dublin release).

File Format: .qcow2 (QEMU Copy-On-Write), standard for Linux KVM-based hypervisors.

Virtual Platform: Catalyst 9000v (specifically the UADP or Q200 data plane variants). Release Type: Production (PRD) build. Key Features & Capabilities

IOS XE Programmability: Supports modern automation tools like NETCONF, RESTCONF, and gNMI.

SD-Access Testing: Enables virtualized testing of Software-Defined Access (SDA) environments.

Advanced Routing: Supports full L3 capabilities including OSPF, BGP, and EIGRP.

Switching Features: Includes VLANs, STP, and EtherChannel, though hardware-dependent features like StackWise are simulated in software. Usage in Simulation Tools

To use this image in a lab environment, follow these general steps:

Deployment: Upload the file to your virtualization server (e.g., via SFTP to /opt/unetlab/addons/qemu/ on EVE-NG).

Configuration: Create a directory following the specific naming convention required by your platform (e.g., mkdir cat9kv-17.12.01-prd9).

Resources: Ensure your host machine has sufficient RAM (typically 8GB–16GB per node) and CPU cores to handle the IOS XE virtual machine. Related Resources

Official documentation is typically available via the Cisco Catalyst 9000v Data Sheet.

For installation guides, refer to the EVE-NG Catalyst 9000v How-To. Catalyst 9000v - - EVE-NG

This specific file is an enabler of modern network architecture.

In Cisco internal engineering:

Such builds are used for:

They are not intended for production networks – they may have bugs, debug logging enabled, or incomplete features.