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The file is the official virtual appliance image for the Cisco IOS XRv router platform, running the modular and highly scalable Cisco IOS XR Software Release 6.1.3 . Packaged in the QEMU Copy-on-Write ( .qcow2 ) format, this specific demo image acts as a cornerstone for network engineers, architects, and students to simulate complex service provider architectures—such as MPLS, BGP, and advanced routing environments—directly inside virtualization topologies like GNS3, EVE-NG, or KVM hypervisors.
When running the iosxrv-k9-demo-6.1.3.qcow2 image for the first time, the system performs an internal file-system integrity initialization. Expect the initial boot cycle to take between 3 and 7 minutes depending on your underlying CPU pass-through capabilities.
The ability to run a carrier-class operating system like IOS XR on a laptop using images like the 6.1.3 demo has fundamentally changed network engineering. It has enabled practices like:
Then run top focused on that process:
This comprehensive guide breaks down the fundamentals of the image, why it remains a top choice for emulation topologies, how to configure it across popular platforms like GNS3 and EVE-NG, and its inherent operational limits. What is iosxrv-k9-demo-6.1.3.qcow2 ? iosxrvk9demo613qcow2 top
show processes cpu
: Specifies a rate-limited evaluation tier intended strictly for labs, testing, and training rather than production routing.
You should see interfaces like MgmtEth0/0/CPU0/0 coming online.
: Likely identifies this as a demonstration or trial version of the software. 613 : Refers to the software version (in this case, 6.1.3 ). The file is the official virtual appliance image
The string appears to be a technical filename or a specific identifier for a virtual machine disk image, likely used in networking labs.
To begin with, let's dissect the keyword into its constituent parts. "iosxrvk9demo613qcow2" seems to be a unique identifier, comprising a mix of letters and numbers. The addition of "top" at the end suggests that it might be related to a ranking or a categorization.
The technical term refers to a specific virtual disk image file used to run a demonstration version of the Cisco IOS XRv 9000 Router . Broken down into its core components, iosxrvk9 represents the carrier-grade Cisco IOS XR software platform, demo flags its trial evaluation license status, 613 points to software release version 6.1.3, and qcow2 is the standard QEMU Copy-On-Write format used by modern hypervisors. When users search for this filename combined with the word "top" , they are typically looking for optimal configurations, performance analysis via the Linux top utility inside the hypervisor, or how to allocate resource caps to prevent the image from consuming maximum CPU power.
If you are looking at the top output inside the XR environment or via the hypervisor, keep an eye on these components: Expect the initial boot cycle to take between
# Locate the process ID of your virtual router image ps aux | grep iosxrvk9demo613qcow2 # Create a CPU cap using the systemd-run utility (Caps the VM process to 50% of a core) sudo systemctl set-property cgroup_name CPUQuota=50% Use code with caution. Optimize Hypervisor Disk Storage
Upload the image directly into that directory and rename it exactly to :
show processes cpu show memory summary show platform resources