| Symptom | Likely Cause | Solution | |---------|--------------|----------| | Boot hangs at "Loading kernel" | Missing serial console configuration | Ensure <serial> and <console> point to pty with target_type='serial' . | | No network interfaces visible | Wrong NIC model | Set model to virtio or e1000 (virtio preferred). | | VM reboots randomly | Insufficient memory | Allocate at least 4GB RAM (6GB for BGP heavy config). | | Plugin cannot find QCOW2 | Permissions issue | Run chmod 644 on the QCOW2 file and ensure libvirt user can read it. | | SSH to NX-API fails | NX-API not enabled in Day-0 | Inject a bootstrap config using guestinfo property or CDROM ISO. |
Unlike physical switches, virtual Nexus images often lose their boot path. Once you reach the switch# prompt, find the exact .bin filename inside the image and set it permanently: Check flash for the binary: dir bootflash: Set boot variable: nxosv9k-7.0.3.i7.4.qcow2 plugin
| Feature | Benefit | |---------|---------| | | Full support for VXLAN BGP EVPN control plane. | | NX-API | REST API for automation, replacing CLI scripting. | | Bash shell access | Guest shell for Linux-based troubleshooting. | | Lower resource footprint | Requires only 4GB RAM and 2 vCPUs (vs. 8GB for 9.x). | | Mature Vagrant support | Well-documented community boxes. | | Symptom | Likely Cause | Solution |
2 Physical CPU Cores (Threads may result in poor performance). 8192 MB (8 GB). | | Plugin cannot find QCOW2 | Permissions
: Run the EVE-NG wrapper to ensure the system can access the file: /opt/unetlab/wrappers/unl_wrapper -a fixpermissions Initial Configuration
The nxosv9k-7.0.3.i7.4.qcow2 file is a virtual disk image for the , a virtualized platform designed to simulate the control plane of Nexus 9000 hardware. This specific version, 7.0(3)I7(4), is widely used in network simulators like EVE-NG and GNS3 for labbing data center technologies. Key Features and Capabilities
and NFV-based solutions, including support for NX-API and Python scripting. Supported Networking Features