Timos-sr-13.0.r4-vm.qcow2 Jun 2026

The Timos-sr-13.0.r4-vm.qcow2 file is a virtual disk image containing Nokia’s TiMOS (Time Real-time Operating System). This specific version runs the 7750 Service Router (SR) platform, simulated for virtual environments. : Nokia's proprietary routing operating system. 13.0.r4 : The specific software release version. vm : Indicates a Virtual Machine optimized build. qcow2 : QEMU Copy-On-Write 2 format for KVM hypervisors. Key Technical Specifications

Deploying virtualized SR-OS nodes (often referred to as vSIM or VSR—Virtual Service Router) serves several critical purposes in modern network engineering:

Before deploying a complex Segment Routing policy, run it here. The vm.qcow2 image behaves exactly like a 7750 SR-12 line card—because the data plane is the same binary, just virtualized. Timos-sr-13.0.r4-vm.qcow2

/usr/bin/qemu-system-x86_64 -m 2048M -enable-kvm \ -drive file=Timos-sr-13.0.r4-vm.qcow2,format=qcow2,if=virtio \ -serial telnet:localhost:3366,server,nowait -smp 2

Set to 6 to allow for multiple interface connections. Type: e1000. The Timos-sr-13

However, note that this virtual router is designed for . It is not a replacement for production hardware, as its forwarding plane is intentionally limited (for example, to 250 packets per second per interface). A valid license file is required to run the VM without interruptions; without one, the system reloads every 60 minutes.

Running the TiMOS virtual image requires specific hardware acceleration settings to ensure the router boots correctly: how it works

This image serves as the core tool for professionals studying for the Nokia Service Routing Certification (SRC) program, including the Network Routing Specialist (NRS I / NRS II) and Service Routing Architect (SRA) designations.

: The host machine slows down when launching multiple nodes.

This guide covers what this file is, how it works, and how to deploy it in a laboratory environment. What is Timos-sr-13.0.r4-vm.qcow2?

: Network architects use it to design and validate complex BGP, MPLS, segment routing, and EVPN topologies before hardware deployment.