Version 13.0.r4 stabilizes the Segment Routing Traffic Engineering (SR-TE) policy infrastructure. You can build a 5-node virtual topology using libvirt, configure IS-IS with SR extensions, and test path computation with PCEP (PCE Protocol).
| Hypervisor / Orchestrator | Compatibility with Timos-sr-13.0.r4-vm.qcow2 | Notes |
| :--- | :--- | :--- |
| KVM (libvirt) | Full | Native format, highest performance. |
| VMware ESXi 7.0/8.0 | Converted | Use qemu-img convert -f qcow2 -O vmdk before import. |
| OpenStack (Glance) | Full | Upload directly as QCOW2 image, set hw_scsi_model=virtio-scsi. |
| Proxmox VE | Full | Import via qm importdisk. |
| VirtualBox | Partial | Requires conversion to VDI and disabling KVM acceleration (slow). |
| Microsoft Hyper-V | Not recommended | No native QCOW2 support; performance degradation expected. | Timos-sr-13.0.r4-vm.qcow2
Data centers migrating to EVPN-VXLAN often use Nokia’s vSR as a gateway or route reflector. This image supports EVPN Type 2 (MAC/IP advertisement) and Type 5 (IP prefixes) with robust multi-homing (ESI). Version 13
Every segment of the filename tells a story about the software's lineage and purpose. "Timos" stands for Telecom IP Operating System, the cornerstone operating system developed by Nokia (formerly Alcatel-Lucent). It is the same OS that runs on their high-end 7750 Service Router (SR) hardware. "sr" confirms this identity: Service Router. The versioning, "13.0.r4" , indicates a specific release—mature enough for stability (r4 often signifies the fourth revision or maintenance release) but modern enough to include the latest Segment Routing, EVPN, or MPLS features. | | VMware ESXi 7
Finally, "vm.qcow2" is the technical magic. QEMU Copy-On-Write version 2 is the file format used by virtualization platforms like KVM (Kernel-based Virtual Machine) and OpenStack. Unlike a raw disk image (.img), a .qcow2 file is efficient; it grows dynamically as data is written to the virtual hard drive and supports snapshots, compression, and encryption.