If your goal is to learn VXLAN/EVPN or high-scale datacenter networking, consider these newer (and more legitimate) options:
| Software | NX-OS Version | Format | Legal Access | |----------|---------------|--------|---------------| | CML 2.7+ | 10.2.x, 9.3.x | QCOW2 | Paid sub | | Nexus 9000v on KVM | 9.3(8), 10.3(1) | QCOW2 | Smart Net | | Cisco dCloud | 7.0(3)I7(6) | Pre-built lab | Free (limited hrs) |
The 7.0(3)I7 train is end-of-life (EOL since 2020). For new learning, start with 10.3(x) – though resource requirements are higher (12GB RAM recommended).
The 7.0(3)I7 train is historically significant because it introduced a mature, stable implementation of VXLAN BGP EVPN for the virtual platform.
Basic CLI Commands:
Enable Remote Access:
This version supports both NX-OS Standalone Mode and ACI (Application Centric Infrastructure) Mode.
nxosv9k703i74qcow2 appears to be a machine-generated identifier likely associated with a Cisco NX-OSv virtual Nexus 9000 series image or a related virtual appliance build/version. Below is a concise, structured summary covering likely meanings, use cases, and how to handle it.
| Component | Meaning |
|-----------|---------|
| nxosv | Nexus OS virtual edition |
| 9k | Nexus 9000 series |
| 703 | Likely 7.0(3) release family |
| i74 | Likely “I7(4)” – an interim release train (I7 = 7.0.3.I7.4) |
| qcow2 | QEMU Copy-On-Write v2 format | nxosv9k703i74qcow2
Note: The exact characters
703i74strongly suggest version 7.0(3)I7(4) – a common NX-OS release for Nexus 9000v.
| Feature Category | Capability | | :--- | :--- | | Primary Use | Data Center Fabric Simulation (VXLAN/EVPN) | | Automation | NETCONF, RESTCONF, Python API, Guest Shell (Docker) | | Virtualization | KVM/QEMU optimized (QCOW2 format) | | Routing | BGP, OSPF, ISIS, PIM (Multicast) | | Licensing | Evaluation Mode (All features unlocked) | | Stability | "Gold Star" release for GNS3/EVE-NG labs |
Note: While newer versions (9.x releases) exist, the 7.0(3)I7(4) image remains extremely popular in network simulation communities (GNS3/EVE-NG) because it is lighter on RAM/CPU resources than the newer 9000v releases while still supporting modern Data Center features.
The string "nxosv9k703i74qcow2" identifies a specific Cisco NX-OSv 9000 virtual disk image.
In a networking lab or virtualization context, the "piece" or component associated with this file name is: Software Family: Cisco NX-OS (Nexus Operating System). Version: 9.3(7) — indicated by the 937 in the filename.
Format: QCOW2 (QEMU Copy-On-Write), which is the standard disk image format for KVM, GNS3, and EVE-NG.
This virtual "piece" is used to simulate a high-end data center switch (like the Nexus 9000 series) for testing configurations and network design.
The string "nxosv9k703i74qcow2" identifies a specific virtual disk image file for the Cisco NX-OSv 9000 (Release 7.0(3)I7(4)). This image is a virtualized version of the Cisco Nexus 9000 series switch, designed for network simulation, automation testing, and lab environments in platforms like GNS3, EVE-NG, or Cisco Modeling Labs (CML). Technical Specifications Release version: 7.0(3)I7(4) If your goal is to learn VXLAN/EVPN or
Format: .qcow2 (QEMU Copy-On-Write), typically used with KVM/QEMU hypervisors. Minimum Resource Requirements: RAM: 8 GB (older I5 versions may CPU: 2 to 4 vCPUs.
Storage: Ensure the host has enough space for the ~2 GB compressed image and its growth during runtime. Deployment Steps
To use this specific image in a lab environment like EVE-NG, follow these general steps:
Directory Creation: Create a folder on your hypervisor (e.g., /opt/unetlab/addons/qemu/nxosv9k-7.0.3.I7.4/).
Image Upload & Rename: Upload the file and rename it to sataa.qcow2 to ensure the emulator recognizes it correctly.
Permissions: Run permission fix scripts (e.g., /opt/unetlab/wrappers/unl_wrapper -a fixpermissions).
Initial Boot: On the first start, you must abort "Auto Provisioning" to enter the manual setup.
Set Boot Variable: Log in (default user: admin) and set the boot image to ensure it loads on the next restart: switch# configure terminal switch(config)# boot nxos bootflash:nxos.7.0.3.I7.4.bin switch(config)# copy running-config startup-config. Common Usage Cisco Nexus 9000v switch - - EVE-NG designed for network simulation
The string "nxosv9k703i74qcow2" identifies a specific virtual disk image file for the Cisco NX-OSv 9000
(a virtualized version of the Nexus 9000 series switch). It is commonly used in network emulation environments like CML (Cisco Modeling Labs) Image Breakdown : Indicates the platform, which is the NX-OSv 9000 virtual switch. : Represents the software version 7.0(3)I7(4) : Specifies the file format ( QEMU Copy-On-Write 2
), which is a standard disk image format used by the QEMU/KVM hypervisor. Software Release: NX-OS 7.0(3)I7(4) This specific release is part of the 7.0(3)I7 train
, which focused on stability and feature enhancements for data center environments. : This release has reached its End-of-Sale (EoS) as of November 6, 2021. Key Capabilities Designed for Control Plane simulation
, allowing users to test configurations, automation tools, and SDNs at scale before production deployment.
Shares the same software binary as physical Nexus 9000 hardware, though it uses a software data plane instead of hardware ASICs. Supports programmatic interfaces like Deployment Requirements
For stable operation in a virtual environment, Cisco generally recommends the following for this image: : Standard deployments typically require 8 GB (8192 MB) : At least are recommended for the control plane to function smoothly. Hypervisors : Compatible with (native for .qcow2), VMware ESXi, and VirtualBox.
For detailed technical caveats or bug fixes specific to this version, you can refer to the official Cisco Nexus 3000/9000 Release Notes for 7.0(3)I7(4) for a specific simulator like AI responses may include mistakes. Learn more
This filename follows the naming convention for a Cisco Nexus 9000v (NX-OSv) QEMU image used for virtualization and lab testing.
Below is a helpful structured report based on that filename and its likely technical context.