Cat9kv-prd-17.12.01prd9.qcow2 May 2026

| Component | Meaning | |-----------|---------| | cat9kv | Cisco Catalyst 9000v (virtual switch) | | prd | Production release (as opposed to dev or special build) | | 17.12.01 | Cisco IOS XE software version 17.12.1 | | prd9 | Likely a production build iteration or patch level (e.g., 9th build of this release) | | .qcow2 | QEMU QCOW2 disk image format |

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.

While cat9kv-prd-17.12.01prd9.qcow2 is a mature product, virtualization imposes limits. cat9kv-prd-17.12.01prd9.qcow2

Cisco does not officially release pre-release images like this to the public. If you obtained this file:

Using such an image in production violates Cisco’s EULA and may lack critical security fixes. | Component | Meaning | |-----------|---------| | cat9kv

| 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. Such builds are used for:

| Feature | Official 17.12.1 | prd9 build | |---------|------------------|--------------| | Availability | Cisco.com (with contract) | Internal only | | Support | TAC-supported | No support | | Debug symbols | Stripped | May contain debug | | Performance | Optimized | Possibly slower (logging) | | Stability | High | Unknown – could crash | | Encryption | Signed + secure | May lack production signatures |