Nxosv9k-7.0.3.i7.4.qcow2 Plugin May 2026

Unlike a standard QEMU/KVM image where you just point and click, the NXOSv9K requires a device plugin. Think of it as a compatibility layer. It tells your hypervisor (GNS3, EVE-NG, or pure libvirt) exactly how to emulate the ASICs, PCI layout, and boot sequence of a physical Nexus 9000.

The plugin isn't just a file—it's a script or binary that handles:

If you’ve ever tried to spin up a Cisco Nexus 9000v (NXOSv9K) in a virtual lab, you know the pain of broken interfaces, failed boots, or mismatched hardware signatures. The secret sauce? The often-overlooked QEMU plugin.

Today, we’re focusing on a specific, battle-tested combination: nxosv9k-7.0.3.i7.4.qcow2 and the plugin architecture that makes it sing.

qemu-system-x86_64 -enable-kvm -m 16384 -smp 4 \
  -drive file=nxosv9k-7.0.3.i7.4.qcow2,if=virtio,format=qcow2 \
  -netdev tap,id=net0,ifname=tap0,script=no,downscript=no -device virtio-net-pci,netdev=net0 \
  -nographic -serial mon:stdio

feature interface-vlan feature nxapi feature bgp feature vn-segment-vlan-based nxosv9k-7.0.3.i7.4.qcow2 plugin

While later versions exist (9.2.x), 7.0.3.I7.4 provides fully stable VXLAN EVPN Control Plane with BGP. You can build spine-leaf topologies, configure nv overlay evpn, and test multitenancy without the resource bloat of newer releases.

Terraform’s libvirt-provider plugin allows you to define the QCOW2 as a domain resource:

resource "libvirt_volume" "nxosv9k" 
  name   = "nxosv9k-7.0.3"
  source = "/path/to/nxosv9k-7.0.3.i7.4.qcow2"
  format = "qcow2"
resource "libvirt_domain" "nxos_switch" 
name   = "leaf1"
memory = "4096"
vcpu   = 2
disk 
volume_id = libvirt_volume.nxosv9k.id
 Unlike a standard QEMU/KVM image where you just
console 
type        = "pty"
target_port = "0"

network_interface 
network_name = "mgmt"
network_interface 
network_name = "data1"

The “plugin” here is the Terraform provider itself, which understands how to interface with the QCOW2 via libvirt. console type = "pty" target_port = "0"

Even with a correct image, you may encounter problems. Here are fixes for the top three issues.

No. Absolutely not.

The nxosv9k-7.0.3.i7.4.qcow2 plugin is strictly for CML (Cisco Modeling Labs), EVE-NG, or GNS3. Cisco does not license this for production traffic forwarding. The data plane is software-emulated—you will get ~50 Mbps of throughput, not 50 Gbps.