Some newer virtual images can be "heavy" or prone to kernel panics during boot. The 20.2R1.10 release is widely regarded in the community as one of the most stable builds for nested virtualization.
This stands for Routing Engine . In a vQFX setup, the architecture is split into two parts: the RE (Control Plane) and the PFE (Packet Forwarding Engine). This specific file handles the "brains" of the switch.
While the software can be downloaded for evaluation, production use requires a valid Juniper license.
Upload the file to this directory using an SFTP client and rename it to virtioa.qcow2 mv vqfx-20.2R1.10-re-qemu.qcow2 virtioa.qcow2 Fix Permissions:
Connect via SSH to your EVE-NG server and create the appropriate directory structure: mkdir -p /opt/unetlab/addons/qemu/vqfxre-20.2R1.10/ Use code with caution.
qemu-img create -f qcow2 -o preallocation=metadata,cluster_size=2M vqfx202-prealloc.qcow2 8G
: Powered by a companion image (typically a cosim QEMU or Docker file). It simulates the hardware ASIC, processing packet forwarding, switching logic, and actual data plane traffic. 2. The Great vQFX Version Discrepancy Guide: Importing Juniper vMX and vQFX into CML2.4
When you run top on a vQFX, look for these processes:
Unlike the vMX (Virtual MX router), which usually runs as a single monolithic VM (or with a separate PFE container in older versions), the vQFX has a distinct architecture that mirrors its physical hardware counterpart. To successfully use the file indicated in your query, it is critical to understand that a vQFX instance consists of that must be paired together:
: Run the exact same Junos OS that powers physical QFX5100 and QFX10000 switches.
Unlike some virtual routers that run as a single VM, the vQFX requires two separate virtual machines to function correctly:
For the keyword , advanced users often combine top output with netstat -m to debug buffer exhaustion in the virtual forwarding plane.
If you prioritize I/O performance over snapshot features, convert the image to raw:
This is the simplest "top" layer topology. You spin up one RE VM and one PFE VM.
Connect (Internal Link) of the RE node directly to em1 of its corresponding PFE node.
Here is a powerful feature regarding this specific platform that is essential for network engineers and architects:
