Iosxrv-k9-demo-6.1.3.qcow2

qemu-system-x86_64
-machine pc -accel kvm
-m 4096
-smp 2
-drive file=iosxrv-k9-demo-6.1.3.qcow2,if=virtio,format=qcow2
-netdev bridge,id=net0,br=virbr0
-device virtio-net-pci,netdev=net0,mac=52:54:00:12:34:01
-serial mon:stdio
-nographic

First Boot Configuration: Connect to the console. The image will auto-discover interfaces. You must configure an admin user and enable AAA new-model.

# At the prompt (sysadmin)
sysadmin-vm:0_RP0# config
sysadmin-vm:0_RP0(config)# hostname XRv-1
sysadmin-vm:0_RP0(config)# commit
sysadmin-vm:0_RP0(config)# exit

The iosxrv-k9-demo-6.1.3.qcow2 file is more than just a disk image—it is a gateway for thousands of network engineers to explore the power of Cisco IOS XR without the barrier of expensive hardware. Its balance of features (MPLS, BGP, Netconf/YANG) and modest system requirements make it a permanent fixture in many virtual labs, even as newer versions emerge.


By understanding how to deploy, configure, and troubleshoot this image, you gain foundational skills that translate directly to carrier-grade networking. Whether you’re automating with Ansible, studying for a certification, or emulating a service provider’s backbone, this humble qcow2 file remains an indispensable tool in the modern network engineer’s toolkit.




Further Resources:



Need help booting this image? Join the #iosxr channel on the Network to Code Slack or the r/ccie subreddit.


This technical review covers the iosxrv-k9-demo-6.1.3.qcow2 image, a virtualized version of Cisco’s IOS XR (eXtreme Routing) software. This specific image is primarily used by network engineers and students for lab simulations, testing, and learning the IOS XR operating system without needing high-end physical hardware like the ASR 9000 series. Quick Overview Software Family: Cisco IOS XR Version: 6.1.3 (Release Date: ~2017)


Format: .qcow2 (Optimized for QEMU/KVM, commonly used in GNS3, EVE-NG, and Cisco Modeling Labs). Platform: IOS XRv (The virtualized, 32-bit demo version). 1. Key Features & Performance


As a "Demo" version, this image is designed to provide the Control Plane experience of a high-end carrier router. Iosxrv-k9-demo-6.1.3.qcow2


Routing Protocols: Full support for standard protocols like BGP, OSPF, IS-IS, and RIP. It is excellent for practicing complex BGP attributes or MPLS configurations.


Service Provider Features: Includes support for MPLS L3VPNs, L2VPNs, and Segment Routing (SR), which were becoming more mature in the 6.1.x train.


Automation: Basic support for NETCONF and YANG, allowing you to test early-stage automation scripts. 2. Limitations (The "Demo" Catch)


Because this is a virtualized demo image and not a full production instance (like the 64-bit IOS XRv 9000), it has significant constraints:


Throughput: The data plane is extremely limited. It is meant for passing routing updates, not for heavy traffic testing. Expect speeds capped at around 2 Mbps.


Memory Footprint: Compared to newer versions, 6.1.3 is relatively lightweight. It typically requires 3GB to 4GB of RAM per instance, making it easier to run large topologies on a standard PC than the 16GB-per-node XRv 9000.


32-bit Architecture: Version 6.1.3 is one of the later releases before Cisco moved more aggressively toward the 64-bit architecture. It lacks some of the modern scalability features found in the 7.x series. 3. Use Cases CCNA/CCNP Service Provider ⭐⭐⭐⭐⭐


Perfect for learning the syntax and protocol behavior of IOS XR. Automation Testing qemu-system-x86_64 -machine pc -accel kvm -m 4096 -smp


Good for basic CLI scraping or early API tests, but limited compared to newer versions. Traffic Benchmarking


Do not use. The demo data plane will drop packets under any real load. Segment Routing Lab ⭐⭐⭐⭐ 6.1.3 has solid support for early SR implementations. 4. Technical Setup Tips


To get this running smoothly in GNS3 or EVE-NG, use the following settings: QEMU Binary: x86_64 RAM: 3072 MB (Minimum) / 4096 MB (Recommended)


CPU: 1 vCPU is usually enough for a lab, but 2 vCPUs will make the boot process significantly faster. Console: Serial (Telnet). Final Verdict


The iosxrv-k9-demo-6.1.3.qcow2 image is a "golden oldie" for network labs. While it is outdated compared to the current IOS XR 7.x releases, it remains highly valuable because it is resource-efficient. If you want to build a large Service Provider lab with 10+ routers on a single laptop, this is often a better choice than the resource-heavy XRv 9000.


Are you planning to use this image for a specific certification lab, or are you troubleshooting a boot issue in GNS3?


Understanding the IOS-XR and the QCOW2 Image


IOS-XR is a train of Cisco software that provides a next-generation network operating system designed for high availability, network scalability, and reliability. It's utilized in various Cisco networking devices, offering a robust platform for service providers and large enterprises to build complex, scalable networks. First Boot Configuration:  Connect to the console


The QCOW2 format, on the other hand, is a virtual disk image format used by QEMU, an open-source emulator and virtualizer. QCOW2 allows for efficient virtual disk images that support advanced features such as copy-on-write, encryption, and compression.


The Role of iosxrv-k9-demo-6.1.3.qcow2


The file "iosxrv-k9-demo-6.1.3.qcow2" likely represents a demo image of Cisco IOS-XR, version 6.1.3, for evaluation and testing purposes. This image allows network engineers, administrators, and students to experiment with IOS-XR features without the need for physical hardware. It can be run on a virtual machine using a hypervisor that supports QEMU images, such as KVM (Kernel-based Virtual Machine) on Linux systems or through the use of QEMU directly on various operating systems.


Advantages of Using Demo Images



Considerations and Usage



In conclusion, "iosxrv-k9-demo-6.1.3.qcow2" represents a valuable resource for those looking to explore the features of Cisco IOS-XR in a virtual setting. When utilized properly, such demo images offer a practical pathway to learning, evaluation, and testing without the need for physical hardware.


XRv-1(config)# username lab
XRv-1(config-p)# secret lab123
XRv-1(config-p)# group root-lr
XRv-1(config-p)# exit
XRv-1(config)# commit