running Cisco IOS XE Software Release 17.12.01 . Released as part of the Cisco Modeling Labs (CML) ecosystem, this .qcow2 file mimics the hardware architecture of enterprise-grade physical Catalyst 9000 switches within virtualized environments. It allows network engineers to architect, test, and automate complex enterprise layouts—including software-defined access (SD-Access) topologies—without requiring physical lab hardware.
: Users can enable advanced features like BGP by configuring the license boot level to network-advantage with dna-advantage . Installation and Usage in Labs
| Feature | cat9kv-prd-17.12.01prd9 | iosv-l2 (standard) | vios-l2 | | :--- | :--- | :--- | :--- | | | 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% |
The .qcow2 file format makes this image ideal for quick deployments via Linux command line using virt-install . Follow this process to spin up an instance. Step 1: Prepare the Image Directory cat9kv-prd-17.12.01prd9.qcow2
: The instance boots with restricted throughput (typically 250 Kbps) until registered.
: The image is heavy; expect several minutes for the switch and its interfaces to become fully operational after the initial boot. Known Issues & Considerations Interface Stability
Deep within the file system lies the packages.conf or the .bin container. This is a compressed archive holding the actual routing logic—BGP daemons, OSPF processes, MAC address tables, and the parsing logic for the CLI you interact with. running Cisco IOS XE Software Release 17
To initialize the IOS XE control plane effectively, the virtual machine must meet minimum hardware specifications: Minimum Requirement Recommended (Production) 2 to 4 Cores (Depending on throughput) RAM Disk Space 16 GB+ (For logging and core dumps) NIC Types VirtIO, E1000 VirtIO or SR-IOV (Single Root I/O Virtualization)
Do you plan to run it in standard or SD-WAN mode ? Share public link
While powerful, users on forums like Reddit frequently note that it is technically distributed as a beta VM image and can crash if you push high traffic throughput. : Users can enable advanced features like BGP
: Ensure your host has sufficient space for the .qcow2 file and its swap/temporary files. 2. Deployment Guides by Platform
Unlike older vIOS images, , even in a virtual lab. The prd9 build enforces:
Part of the Cisco Modeling Labs (CML) reference platforms, but widely used in other network emulators .
: Establish internet connectivity or route to an on-premise Cisco Smart Software Manager (SSM) satellite. Execution : Use the token registration command sequence: license smart trust idtoken Use code with caution.