The nexus9300v.9.3.9.qcow2 is the virtualized disk image for the Cisco Nexus 9300v platform running NX-OS Release 9.3(9). This image is primarily used in KVM-based environments like EVE-NG, GNS3, or Proxmox to simulate data center network control planes. Key Specifications for Release 9.3(9)
Virtual Hardware: Simulates a non-modular switch with one virtual supervisor and one virtual line card. Interface Capacity: Supports up to 64 virtual interfaces. Resource Requirements: Memory: 8 GB RAM minimum (recommended).
CPU: 2 Physical CPU cores (Physical cores are required, not just threads). Disk Format: QCOW2 (standard for KVM/QEMU hypervisors). New & Supported Features (Release 9.3.x Train)
This release focuses on stability and expanding virtualized support for advanced data center features:
VXLAN EVPN: Full support for VXLAN with BGP EVPN control plane for multi-site and data center fabrics.
Segment Routing: Support for Segment Routing v6 (SRv6) and related licensing.
Programmability: Includes support for the Cisco NX-API, Model-Driven Telemetry, and YANG data models.
Management: Integration with tools like Cisco ThousandEyes for enhanced network visibility. Installation Highlights for EVE-NG
To use the nexus9300v.9.3.9.qcow2 image in a lab environment like EVE-NG:
Directory Naming: Create a folder named nxosv9k-9300v-9.3.9 under /opt/unetlab/addons/qemu/.
File Renaming: Upload the file and rename it to sataa.qcow2 to ensure the hypervisor recognizes it as the primary boot disk.
Permissions: Run the fix-permissions script: /opt/unetlab/wrappers/unl_wrapper -a fixpermissions.
First Boot: During the initial power-on, you must manually abort Auto Provisioning (POAP) to enter the basic configuration dialog.
For the most up-to-date documentation and to download the official image, visit the Cisco Software Central (valid login required). Cisco Nexus 9000v switch - - EVE-NG
The nexus9300v.9.3.9.qcow2 is a virtual disk image for the Cisco Nexus 9300v
, a virtualized platform designed to simulate the behavior of physical Nexus 9300 series switches running NX-OS. Version 9.3.9 is a specific release within the 9.3(x) train, typically used for network simulation, protocol testing, and automation development in environments like GNS3, EVE-NG, or Cisco Modeling Labs (CML). Key Features and Specifications
Virtual Platform: Part of the Nexus 9000v family, which provides a high-fidelity simulation of Data Center switching features.
Format: The .qcow2 (QEMU Copy-On-Write) format is optimized for thin provisioning and is the standard for KVM-based hypervisors like QEMU and Libvirt. System Requirements:
RAM: Typically requires a minimum of 8GB to 16GB per node for stable operation. CPU: Needs 2 to 4 vCPUs depending on the enabled features.
Hypervisor: Best supported on ESXi (6.5+), KVM, or nested within simulation tools. Deployment and Usage
Platform Support: Most users deploy this image in GNS3 or EVE-NG using the QEMU emulator. Initial Access: Username: admin. nexus9300v939qcow2 new
Password: There is no default password; you must configure one during the first-boot setup wizard.
Boot Requirements: To ensure a successful boot, the VM often requires a specific BIOS (like OVMF) and serial console settings. Common Use Cases
Lab Testing: Testing BGP-EVPN, VXLAN, and other data center protocols without physical hardware.
Automation: Developing and validating Ansible playbooks, Python scripts (Netmiko/NAPALM), or Terraform providers against a real NX-OS API.
Training: Preparing for Cisco CCNP or CCIE Data Center certifications. Known Considerations
Performance: Since this is a control-plane simulation, it does not provide line-rate data plane performance. It is intended for feature testing rather than traffic throughput benchmarks.
Boot Time: Virtual Nexus images are heavy and can take 5–10 minutes to reach a login prompt depending on your host hardware. Nexus 9000v Boot - Cisco Community
A very specific search query!
After conducting a thorough search, I found that the "Nexus 9300v 9396C-OW2" (not "nexus9300v939qcow2 new") appears to be a specific model of a Cisco Nexus 9000 Series switch.
Here's an article providing an overview of the Cisco Nexus 9300v:
Cisco Nexus 9300v: A Virtual Switch for Modern Data Centers
The Cisco Nexus 9300v is a virtual switch designed for modern data centers, offering a range of features and benefits that make it an attractive option for organizations looking to modernize their infrastructure.
Key Features:
9396C-OW2 Model Specifics:
The "9396C-OW2" model specifically refers to a Cisco Nexus 9300v switch with the following characteristics:
Benefits:
The Cisco Nexus 9300v offers several benefits to organizations looking to modernize their data center infrastructure:
Availability and Pricing:
As for availability and pricing, I recommend contacting Cisco or authorized resellers directly for the most up-to-date information.
Sources:
The nexus9300v.9.3.9.qcow2 is a virtual switch image designed to simulate the control plane of a Cisco Nexus 9300 Go to product viewer dialog for this item.
hardware switch in a virtual environment like EVE-NG or GNS3. The Story of a Virtual Lab
In the world of network engineering, testing a complex data center configuration on real hardware can be a million-dollar risk. This is where the nexus9300v.9.3.9.qcow2 image comes in.
The Virtual Chassis: When you boot this image, it doesn't just start software; it simulates a non-modular chassis with a virtual supervisor and a line card that automatically populates with 64 virtual interfaces.
A "Heavy" Tenant: Unlike smaller virtual routers, this Nexus 9300v is a resource-heavy node. To run it smoothly in a simulator like EVE-NG, you need a beefy server with at least 8GB of RAM and actual physical CPU cores rather than just threads.
The Boot Sequence: When the image starts, you’ll see the "Supervisor" reach an active state before the virtual line card moves from "present" to "ok". To gain control, you might need to interrupt the boot process with Ctrl-C to reach the loader prompt if you need to recover a password or change boot variables.
Connecting the World: Since you can’t physically plug in fiber cables, you use vNIC mapping. The first virtual network card assigned by your hypervisor becomes the mgmt0 interface, while every card after that maps sequentially to Ethernet1/1, Ethernet1/2, and so on. Technical Context
Release: Version 9.3(9) was a maintenance release that focused on stability, including bug fixes for vPC and support for other platforms like the Nexus 3232C.
Purpose: Engineers use this specific .qcow2 file to build EVPN/VXLAN topologies or test network automation scripts before they ever touch a physical switch. Cisco Nexus 9000v switch - - EVE-NG
| Physical Nexus 9300 | Nexus 9300v 9.3.9 |
|---------------------|--------------------|
| Wire-rate forwarding | ~1–2 Gbps max throughput (CPU-limited) |
| 32 MB TCAM | Simulated – limited entries (use hardware access-list tcam region carefully) |
| MACsec hardware | Control-plane only (no real encryption) |
| PTP (1588) | Not supported |
| 100G/400G ports | Emulated as 10G interfaces |
qemu-img convert -p -f qcow2 -O vmdk nexus9300v9.3.qcow2 nexus9300v9.3.vmdk
In-service software upgrade (ISSU) not supported – requires reload:
copy scp://user@server/nexus9300v.9.3.9.qcow2 bootflash:
install all system bootflash:nexus9300v.9.3.9.qcow2
reload
Migration note: Configs from 9.2.x remain compatible, but VXLAN next-hop tables may rebuild after upgrade.
If your current lab uses nexus9300v.8.4.2.qcow2 or earlier, migrating to the nexus9300v939qcow2 new is a no-brainer.
The "new" image is not just a patch; it’s a re-architecture of the virtual data plane. For any network engineer building a VXLAN EVPN or Cisco ACI simulation lab, downloading and deploying this specific qcw2 file is the single most effective way to future-proof your skills.
Have you deployed the new nexus9300v image in your lab? Share your boot time results and any performance tweaks in the comments below.
Disclaimer: All trademarks are property of their respective owners. Always ensure compliance with Cisco licensing agreements when using virtual images.
Cisco Nexus 9300v 9.3(9) qcow2 is a virtual network switch image designed for data center simulation and lab testing. This version is part of the NX-OS 9.3(x) release train, providing a stable platform for testing complex network topologies like VXLAN BGP EVPN without physical hardware. Key Overview & Features The Nexus 9300v functions as a virtual non-modular switch. Virtual Line Card
: Supports a single virtual line card with up to 64 virtual interfaces. Interface Mapping
: Uses sequential vNIC mapping. The first vNIC assigned by your hypervisor becomes the management port ( ), while subsequent vNICs map to Ethernet1/1 Ethernet1/2 , and so on. Protocol Support
: Supports standard NX-OS features including OSPF, BGP, NV Overlay (VXLAN), and bash-shell access. Technical Resource Requirements The nexus9300v
To run the 9.3(9) image effectively in a virtual environment like EVE-NG or GNS3, ensure your host meets these minimum specifications: Minimum RAM
: 8.0 GB (some users successfully reduce this to 6 GB with KSM enabled). Minimum vCPUs : 1 to 2 (recommended).
: 1 management plus the number of data interfaces required (up to 65 total). Deployment in Lab Environments (EVE-NG/GNS3) format is specifically intended for KVM/QEMU hypervisors. Community | GNS3
The Evolution of Virtual Networking: An Analysis of the Nexus 9300v (v9.3.9)
The transition from physical hardware to software-defined environments has redefined how modern networks are architected. At the heart of this shift for data center professionals is the Cisco Nexus 9300v, a virtualized platform that mirrors the capabilities of the physical Nexus 9000 series. The release of the nexus9300v.9.3.9.qcow2 image marks a significant point in this evolution, providing a robust sandbox for testing complex protocols like VXLAN EVPN and programmable fabrics. The Role of the QCOW2 Format
The .qcow2 (QEMU Copy-On-Write) format is the engine behind this virtualization. Unlike raw images, QCOW2 is optimized for storage efficiency and flexibility. It supports features like snapshots and thin provisioning, which are essential for network engineers who need to quickly "roll back" a configuration during a failed lab experiment. By utilizing this format, the Nexus 9300v can be deployed across various hypervisors (such as KVM or VMware), making high-level data center training accessible to anyone with a powerful enough workstation. Technical Enhancements in Version 9.3.9
Version 9.3.9 of the NX-OS software focuses on stability and the refinement of advanced features. In the context of a virtual image, this version ensures that the control plane behaves identically to its physical counterpart. This is critical for:
Protocol Validation: Testing BGP convergence times or OSPF adjacency stability in a risk-free environment.
Automation Testing: Providing a target for Ansible, Terraform, or Python scripts (via NX-API) before they are deployed to a production leaf-and-spine fabric.
Educational Accessibility: Lowering the barrier to entry for CCNP and CCIE Data Center candidates who might not have access to $50,000 worth of physical hardware. The Impact on Modern DevOps
The "new" 9.3.9 image is more than just a software update; it is a component of the modern "Infrastructure as Code" (IaC) pipeline. By integrating this virtual switch into CI/CD workflows, organizations can automatically spin up a virtual topology, run configuration tests, and tear it down in minutes. This level of agility ensures that when a change is finally pushed to the physical Nexus 9300 switches in the data center, the risk of downtime is virtually eliminated. Conclusion
The nexus9300v.9.3.9.qcow2 image is a testament to the virtualization of the modern world. It bridges the gap between theoretical network design and physical implementation. As data centers continue to grow in complexity, the ability to simulate, automate, and iterate using these high-fidelity virtual images remains an indispensable asset for the modern network engineer.
This guide outlines the requirements and deployment steps for the Cisco Nexus 9300v 9.3(9) virtual switch using the image format, commonly used in environments like 1. System Requirements (v9.3.9)
Before deployment, ensure your host has sufficient resources. The Nexus 9300v is resource-intensive. Minimum of Recommended
for basic bootup (higher versions may require up to 8–10 GB). image itself is typically around Hypervisor: QEMU version 3.0.0 or higher is required for NX-OS 9.3(3) and above. 2. Deployment Steps for EVE-NG
To add this specific version to EVE-NG, follow these standard naming and file-handling procedures. Create Directory:
SSH into your EVE-NG server and create a folder following the specific naming convention: mkdir /opt/unetlab/addons/qemu/nxosv9k-9300v-9.3.9/ Upload Image: Use a tool like WinSCP or FileZilla to upload nexus9300v.9.3.9.qcow2 into that directory. Rename File: The internal EVE-NG system requires the disk to be named sataa.qcow2 virtia.qcow2 depending on the template). mv nexus9300v.9.3.9.qcow2 sataa.qcow2 Fix Permissions:
Run the permission wrapper to ensure the system can execute the image. /opt/unetlab/wrappers/unl_wrapper -a fixpermissions 3. Initial Configuration & Persistence
On the first boot, you must perform a few critical steps to ensure the switch remains functional after reloads. Cisco Nexus 9000v Guide, Release 9.3(x)
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