Timos-sr-13.0.r4-vm.qcow2
Since our file is a .qcow2, the native environment is KVM/QEMU (typically on Linux).
Basic QEMU Launch Command: If you are running a Linux host with KVM enabled, you can spin this up directly. Here is a conceptual example of the command structure you might use:
qemu-system-x86_64 \
-m 4096 \
-smp 2 \
-drive file=Timos-sr-13.0.r4-vm.qcow2,if=virtio \
-netdev user,id=net0,hostfwd=tcp::2222-:22 \
-device virtio-net-pci,netdev=net0 \
-nographic
Note: The Nokia VSR often requires specific CPU flags (like AES-NI) and virtio drivers to function correctly.
The Timos-sr-13.0.r4-vm.qcow2 image is more than just a disk file—it is a portable, carrier-grade routing plane that can live on a developer’s laptop or integrate into a production OpenStack cloud. By understanding its naming schema, resource needs, and deployment nuances (especially on KVM), you gain the ability to prototype complex MPLS/SR networks without a $50,000 physical chassis.
Remember: treat the image with the same operational respect as a physical 7750 SR. Back up the configuration, license it correctly, and monitor its resource usage. Whether you are preparing for a Nokia certification or automating a global network, mastering this virtual router image is a foundational skill for the modern network engineer.
Next steps: Download the image from the Nokia Support Portal (requires valid service contract), spin it up on your favorite Linux server, and run show system information to see the 13.0.r4 engine come to life.
Timos-sr-13.0.r4-vm.qcow2 is the virtual disk image for the Nokia Service Router Operating System (SR OS), specifically version 13.0.R4. This software-based router, often referred to as the Virtualized Service Router (vSR), allows network engineers to simulate high-performance IP/MPLS environments on standard x86 servers rather than proprietary hardware. 🛠️ Core Technical Details
Operating System: Nokia SR OS (formerly Alcatel-Lucent TiMOS). Version: 13.0.R4 (Release 13, Maintenance Release 4).
Format: .qcow2 (QEMU Copy-On-Write), optimized for KVM-based hypervisors.
Use Case: Laboratory testing, certification study (Nokia NRS I/II), and network function virtualization (NFV). 💻 Virtualization & Deployment
To run this specific image, engineers typically use network emulation platforms to bridge the virtual router with a graphical interface. Supported Platforms
GNS3: A popular choice for drag-and-drop network topology building. You can import the image as a QEMU VM.
EVE-NG: Widely used for professional-grade service provider labs.
KVM/QEMU: The underlying technology that executes the .qcow2 file. Recommended Resource Allocation
Running a full SR OS instance is resource-intensive. For version 13.0.R4, standard requirements include:
RAM: Minimum 2 GB (4 GB recommended for stable performance). CPU: 1-2 vCPUs per instance.
Disk Interface: VirtIO is generally preferred for better I/O performance in virtual environments. 🔑 Key Features of SR OS 13.0.R4
This version represents a stable branch of the Nokia software suite, offering:
Advanced Routing: Support for BGP, OSPF, IS-IS, and RSVP-TE.
MPLS Services: Implementation of VPLS, VPRN, and Epipe services.
Management: Full CLI access that mimics the physical 7750 SR and 7450 ESS hardware. ⚠️ Important Considerations
Licensing: While the .qcow2 file can be booted, most advanced features require a valid Nokia license key (license.txt). Without it, the chassis may boot but will not forward traffic or will have restricted boot timers.
Legacy Status: Version 13.0.R4 is an older release. While excellent for legacy environment testing, modern certifications often focus on SR OS 20.x or newer.
If you are setting this up for a lab, I can provide a step-by-step configuration guide for GNS3 or EVE-NG. Would you like the specific CLI commands to initialize the system or a topology suggestion for practice? Alcatel-Lucent vSR-OS in GNS3 - Nbctcp's Weblog
To prepare the TiMOS-SR-13.0.R4-vm.qcow2 image for use in network emulators like Timos-sr-13.0.r4-vm.qcow2
, you must configure the QEMU environment with specific hardware parameters and resource allocations. 1. Resource Requirements
The following minimum specifications are required for the image to boot correctly: (2 recommended for smoother operation). Console Type: Alcatel Unleashed 2. Network & Disk Settings
Configure these virtual hardware settings to ensure compatibility with the Nokia SROS: NIC Adapter Type: (standard) or virtio-net-pci Network Adapters: 6 adapters (standard for SROS images). HDD Interface: (primary disk should be 3. Preparation for EVE-NG If you are using , follow these specific naming and directory conventions: Create Directory: Create a folder in /opt/unetlab/addons/qemu/ starting with the prefix timos-13.0.R4/ Rename Image: Upload your file and rename TiMOS-SR-13.0.R4-vm.qcow2 inside that folder. Fix Permissions: Run the EVE-NG permission fix command: /opt/unetlab/wrappers/unl_wrapper -a fixpermissions 4. Advanced: License & UUID
To prevent the node from rebooting every 60 minutes, you may need a valid license file ( Alcatel Unleashed Alcatel-Lucent vSR-OS in GNS3 - Nbctcp's Weblog 14 Jan 2015 —
The file TiMOS-SR-13.0.R4-vm.qcow2 is a virtual disk image for the Alcatel-Lucent (now Nokia) 7750 Service Router (SR) operating system, known as TiMOS. It is primarily used by network engineers for lab simulations, testing, and certification prep (such as NRS I/II). Overview & Purpose
This specific image is a legacy version (13.0.R4) of the Nokia 7750 SR-OS. It is designed to run in a virtualized environment like GNS3, EVE-NG, or KVM/QEMU. It allows you to simulate high-end edge routing features without needing physical 7750 hardware. Key Performance & Tech Specs Platform: Simulated Nokia 7750 Service Router. Format: QCOW2 (standard for QEMU/KVM hypervisors).
Resource Requirements: Typically requires 2048 MB RAM and an x86_64 architecture to run smoothly.
Default Credentials: Traditionally, the login is admin with the password admin. The "Good" (Pros)
Full Feature Set: Unlike some "light" virtual routers, TiMOS provides a very deep feature set including MPLS, VPLS, VPRN, and advanced BGP configurations.
Stability: Version 13.0.R4 is an older "Maintenance" release, meaning it is generally stable for learning core service routing concepts.
Integration: It integrates perfectly with the GNS3 Registry, making the setup process straightforward for students. The "Bad" (Cons)
Age: Version 13.0 is significantly outdated. Modern Nokia SR-OS versions are now in the 20.x, 21.x, and 23.x range. You will miss out on newer features like segment routing (SR-MPLS/SRv6) or modern model-driven management (gNMI/NETCONF).
Resource Heavy: Compared to a Cisco IOSv image, TiMOS is RAM-hungry. Running a large topology requires a powerful workstation.
Licensing: Technically, TiMOS images require a valid license file from Nokia to boot beyond a trial period or to enable certain line card functions. Final Verdict
If you are looking for a lightweight way to practice basic Nokia CLI or classic MPLS services, this image is a solid, stable choice. However, if you are preparing for current industry certifications or modern SDN workflows, you should look for a newer VSR (Virtual Service Router) image from Nokia's official support portal.
Are you setting this up for a specific certification lab, or just exploring Nokia SR-OS?
gns3-registry/appliances/alcatel-7750.gns3a at master - GitHub
The file Timos-sr-13.0.r4-vm.qcow2 is a virtual disk image for the Alcatel-Lucent (Nokia) 7750 Service Router (SR) Go to product viewer dialog for this item.
virtualized operating system, known as TiMOS (Terabit Interactive Modular Operating System). It is primarily used by network engineers for labbing, testing, and simulations within network emulation environments like GNS3. Technical Specifications According to GNS3 registry data and documentation: Product: Alcatel-Lucent 7750 Service Router Software Version: 13.0.R4.
Format: QCOW2 (QEMU Copy-On-Write), optimized for KVM virtualization. File Size: Approximately 368.5 MB. MD5 Checksum: d7a3609e506acdcb55f6db5328dba8ed. Resource Requirements
To run this virtual appliance effectively, the following system resources are typically recommended: RAM: 2048 MB (2 GB) per node. CPU: x86_64 architecture with 1-2 vCPUs.
Virtualization: KVM acceleration is highly recommended (or required for optimal performance). Default Credentials: Username admin / Password admin. Usage and Implementation
This image is a core component for creating complex network topologies without physical hardware.
Simulation Platforms: It is widely used in GNS3 and can be launched via QEMU commands. Since our file is a
Licensing: While the image can be booted for lab purposes, it typically requires a valid license file (lic.txt). Without a license, the system may reboot every 60 minutes.
Acquisition: These images are proprietary and copyrighted. Official downloads are available through the Nokia Support Portal for users with valid service contracts. license not matching TiMOS-B-13.0.R4 - Alcatel Unleashed
Create a domain XML file (e.g., vsr13.xml) referencing the image:
<domain type='kvm'>
<name>vSR-13r4</name>
<memory unit='GiB'>16</memory>
<vcpu placement='static'>4</vcpu>
<devices>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/images/Timos-sr-13.0.r4-vm.qcow2'/>
<target dev='vda' bus='virtio'/>
</disk>
<interface type='bridge'>
<source bridge='br0'/>
<model type='virtio'/>
</interface>
<console type='pty'/>
</devices>
</domain>
Then define and start:
virsh define vsr13.xml
virsh start vSR-13r4
virsh console vSR-13r4
If you come from a VMware-heavy background, you might ask, "Why not .vmdk?" The answer lies in automation and scale.
You might be wondering, "Why not run the absolute latest version like 22.x or 23.x?"
There are a few reasons why SR-13.0.r4 remains a staple in many labs:
In the evolving landscape of network function virtualization (NFV), the ability to run carrier-grade routing software on standard hypervisors is a game-changer. One filename stands out among professionals dealing with Nokia’s Service Router Operating System (TiMOS): Timos-sr-13.0.r4-vm.qcow2.
This seemingly cryptic string represents a specific, production-ready virtual machine disk image. Whether you are building a virtual lab for certification (SCNP, SRA), testing Segment Routing (SR) in a DevOps pipeline, or deploying a Cloud Native Network Function (CNF), understanding this file’s anatomy, versions, and use cases is critical.
Below, we dissect every component of this keyword and explore its technical ecosystem.
While Timos-sr-13.0.r4-vm.qcow2 remains a stable workhorse, Nokia has moved onward. Key differences if you consider a newer version (e.g., 22.x or 24.x):
timos-sr-13.0.r4-vm.qcow2 is not just a file. It is a portable carrier-grade routing stack packaged for the DevOps era. Whether you are validating an SR-MPLS TE policy, testing EVPN Type-5 route leaking, or building a multi-vendor interoperability lab, this QEMU image is your digital sandbox.
Download it. Snapshot it. Break it. Repeat.
Have you deployed SR OS 13 in your KVM lab? Let me know what features you are testing in the comments.
The file Timos-sr-13.0.r4-vm.qcow2 is a virtual disk image containing version 13.0.R4 of the Nokia (formerly Alcatel-Lucent) Service Router Operating System (SR OS). Known as TiMOS (Terabit Interactive Model-driven Operating System), this software powers high-performance carrier-grade routers such as the 7750 SR and 7950 XRS. Purpose and Architecture
The .qcow2 format is specifically designed for use with QEMU/KVM hypervisors, making it a standard choice for network simulation platforms like GNS3 and EVE-NG. This specific image functions as a Virtualized Simulator (vSim), a software-only version of the SR OS intended for laboratory environments rather than production networks.
While the vSim is operationally identical to physical hardware in its control and management planes, its forwarding plane is artificially throttled—often limited to 250 packets per second (pps) per interface—to prevent its use as a free production router. Key Features in Release 13.0.R4
Release 13.0.R4 brought several enterprise and carrier-grade enhancements to the SR OS platform:
Advanced Routing: Support for highly scalable IP/MPLS protocols, including Segment Routing and extensive Ethernet VPN (EVPN) functionality.
High Availability: Features like Nonstop Routing (NSR) and Nonstop Forwarding (NSF) ensure that the control plane can fail over or reboot without interrupting the traffic flow.
Service Delivery: Capabilities for residential broadband (BNG), mobile backhaul (IPsec gateways), and data center interconnect (DCI).
Management: Transition toward model-driven management, allowing for programmatic configuration via APIs and enhanced CLI structures. TiMOS-SR-13.0.R4-vm.qcow2 - Upload Files - UPW.IO
The file "Timos-sr-13.0.r4-vm.qcow2" is a virtual disk image for the Nokia (formerly Alcatel-Lucent) 7750 Service Router (SR) virtualized operating system, known as TiMOS. Technical Specifications Operating System: TiMOS (Nokia SR OS) version 13.0.R4.
Format: .qcow2 (QEMU Copy-On-Write), typically used with QEMU/KVM hypervisors. Note: The Nokia VSR often requires specific CPU
Virtual Appliance: Commonly used as part of the Virtualized Simulator (vSim) or Virtualized Service Router (vSR) for lab testing and network simulation. File Size: Approximately 368.5 MB (351.4 MiB). MD5 Checksum: d7a3609e506acdcb55f6db5328dba8ed. Deployment Requirements
To run this image in a simulation environment like GNS3, the following resources are generally required: RAM: At least 2048 MB.
CPU: x86-64 architecture; KVM acceleration is highly recommended for performance.
Default Login: Typically admin for both username and password.
Network Interface: Often configured with e1000 adapter types. Common Usage & Limitations
Simulation Only: The vSim is designed for control and management plane simulation in lab environments and is not intended for production use.
Throughput: The forwarding plane in these simulator versions is often rate-limited (e.g., to 250 pps per interface).
Licensing: Without a valid lic.txt file, the system may reboot automatically every 60 minutes. license not matching TiMOS-B-13.0.R4 - Alcatel Unleashed
Virtualizing the Nokia SR-OS: A Guide to TiMOS-SR-13.0.R4 If you are diving into the world of Nokia (formerly Alcatel-Lucent) Service Routers, the TiMOS-SR-13.0.R4-vm.qcow2
image is a classic starting point for labbing. While newer versions exist, 13.0.R4 remains a popular "legacy" version for those studying for SRC certifications or testing older ISP environments.
Here is how to get this virtual machine (VM) up and running in your lab. What is TiMOS-SR-13.0.R4? file is a virtual disk image of the Nokia 7750 Service Router operating system, known as
. In this case, "SR" stands for Service Router, and "vm" indicates it is the virtualized flavor (vSR) optimized for hypervisors like QEMU and KVM. Setting Up the Environment
To run this image effectively, you typically use network emulation platforms like Hardware Requirements According to the GNS3 appliance registry
, the 13.0.R4 version requires the following resources per node: : 2048 MB (Minimum) Disk Interface : IDE or VirtIO Network Adapters : At least 6 (e1000 type) Quick Deployment Steps (QEMU)
If you are running the image manually via the command line, use a string similar to this: /usr/local/bin/qemu-system-x86_64 -m MB -enable-kvm \ -hda TiMOS-SR-
.R4-vm.qcow2 \ -serial telnet:localhost:3366,server,nowait -smp Use code with caution. Copied to clipboard
Once the VM boots, you can access the console by telneting to localhost:3366 Critical Troubleshooting Tips The "60-Minute Reboot"
: Without a valid license file, the virtual SR will automatically reboot every hour. You must place a valid in the virtual drive's root (typically License UUID
: Licenses for Nokia routers are often tied to a specific System UUID. If your license isn't taking, you may need to manually set the UUID in your QEMU advanced settings to match your license file. Default Credentials : The default login is usually with the password Why use 13.0.R4 today?
While Nokia has released versions up to 23.x and beyond, 13.0.R4 is lightweight and compatible with older hardware. It’s perfect for learning the CLI syntax , practicing VPLS/VPRN configurations , and understanding the fundamentals of IS-IS or OSPF
within the Nokia ecosystem without needing a massive server. Need more help with your Nokia lab? Are you having trouble getting the Do you need help mapping the interfaces in EVE-NG or GNS3? AI responses may include mistakes. Learn more
Alcatel-Lucent Virtualized Simulator on GNS3 - Brezular's Blog
$ unzip TiMOS-SR-13.0.R4-vm.zip. Now a virtual disk sros-vm.qcow2 is extracted. To start Qemu virtual machine use the command: $ / brezular.com alcatel-7750.gns3a - appliances - GitHub
