: Indicates that the image is optimized for the QEMU (Quick Emulator) hypervisor.
: The RE must be linked to a corresponding PFE image (e.g., vqfx-20.2R1.10-pfe-qemu.qcow2 ) via a dedicated internal interface, often named em1 , to allow the control plane to communicate with the data plane. Usage in Network Labs vqfx202r110reqemuqcow2 exclusive
Network engineers primarily use this image to build complex topologies in virtual labs: Qemu image namings - - EVE-NG : Indicates that the image is optimized for
: The RE image handles protocols like OSPF, BGP, and STP, as well as SSH access and the Junos CLI. : This is the Junos OS version
: This is the Junos OS version. "20.2" is the release year and series, "R1" indicates the first revision, and ".10" is the specific build number.
: The file extension for QEMU Copy-On-Write version 2 . This is a versatile disk image format that supports thin provisioning, meaning the file only grows as data is actually written to it, saving significant disk space on the host machine. The Role of the RE Image